INTREPID database, file and data structures (R05)
Contents
1. 0 RegistrationCellY 0 CellInfo Begin Xdimension 80 000000 Ydimension 80 000000 CellInfo End NrOfLines 150 NrOfCellsPerLine 150 NrOfBands 1 RegionInfo Begin Type Polygon RegionName All SubRegion 0 0 0 150 150 150 150 0 Stats Begin NumberOfBands 1 NumberOfNonNullCells 22186 NumberOfNullCells 314 MinimumValue 0 2996773720 MaximumValue 0 3520531654 MeanValue 0 0001314568 MedianValue 0 0001314568 CovarianceMatrix 0 0005585500 Stats End RegionInfo End RasterInfo End DatasetHeader End Library Help Top 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 18 Library Help Top lt 4 Back gt Multiband grid datasets Parent topic If you have several Z values for a grid e g derived from the same vector dataset you I can store them as separate grids or as a single multiband grid Most INTREPID tools s which produce grids as output will prompt you to specify the number of bands in the structure output grid and the band number for use on this occasion Band numbers start at 1 Grid dataset example Parent topic Grid dataset file and ebagrid isi standard files directory structure ebagrid ebagrid ers Library Help Top 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 19 Library Help Top lt 4 Bac2. Library Help Top Library Help Top 4 Back gt LUT contains the matrix of colour component levels one row for each possible value of the data being represented Column 1 is the level number and columns 2 3 4 represent the levels of Red Green and Blue respectively The levels range from 0 to 65280 You must enclose the matrix in braces Each row of the matrix occupies a separate line of the ASCII file The place for the opening is on the same line as the words LUT and the alone on a line under the matrix The value and levels within the rows are separated by spaces Example of colour lookup table definition file This sample is an extract from a 256 colour lookup table showing the beginning and end of the file LookUpTable Begin Version 1 0 Name Rainbow Description Cray s Rainbow table NrEntries 256 LUT 0 58624 0 65280 1 57600 0 65280 2 56576 0 65280 3 55552 0 65280 252 65280 2816 19968 253 65280 1792 20992 254 65280 768 21760 255 65280 768 21760 LookUpTable End Field values lookup files Field values lookup files associate integer field values with other data such as words They enable you to have enumerate ordinal type data in INTREPID datasets See Fields associated with lookup tables for details Field values lookup files have extension leg consist of a simple Lookup Begin Lookup End block and reside in the install path lut directory They should not be confused w
3. Signed 32 bit integer 4 bytes Signed32BitInteger integer 4 4 byte real 4 byte IEEE 32 bit floating point 4 bytes IEEEA4ByteReal real 4 real 8 byte IEEE 64 bit floating point 8 bytes IEEE8ByteReal real 8 logical O false 1 true 1 byte Logical logical character character string variable Character character Library Help Top If you wish to use logical or character data in a grid dataset contact our technical support service for advice 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Compound data types Compound data types bundle a set of related scalar values that together make up a meaningful unit of data Parent topic Data Types in INTREPID database file and data structures R05 25 4 Back gt INTREPID datasets This section describes notation used in the data description files DDF see The INTREPID DDF format R08 The main table in this section describes the compound data types The immediately following table explains the column headings Heading Purpose Data type Name of data type Components Names and descriptions of data type components combined table cells Purpose Purpose of data type or component Data Type of Component Scalar data type of component Notation Auxiliary file amp DDF Name for data type used in DDF and in auxiliary files such as isi DDF format hint Notation used in squ
4. and data structures R05 20 Library Help Top Blocks within the isi file Parent topic INTREPID The ColumnDefinition standard information ETE isi files ColumnDefinition Component ResourceName Begin SingleValuedItems BandValuedItem BandValuedItem Component ResourceName End The ReportFormatDefinition ReportFormatDefinition ReportFormat Begin Name default Order FieldName List Width Integer List Decimals Integer List DisplayNullAs String List ReportFormat End The Extensions Extensions Extensions Begin Extensions End The SingleValuedItems SingleValuedItems GroupBy Boolean DataType DataType ByteOrder LSBFirst MSBFirst Comment String List ReadOnly Boolean Bands Integer Library Help Top 2012 Intrepid Geophysics lt 4 Back gt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 21 Library Help Top The BandValuedItem BandValuedItem Band BandNumber Begin Minimum Numeric Maximum Numeric Mean Numeric Variance Numeric Samples Integer Nulls Integer Projection ProjectionName Datum DatumName BandId BandId Unit Unit Width Integer Decimals Integer DisplayNullAs String Alias Alias Band BandNumber End Example of grid datas
5. instead of stored value BMRStandard import information for AGSO vector data import INTREPID ASCII Channels Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 7 Library Help Top 4 Back gt Vector dataset file and directory structure Parent topic INTREPID database file and data structures R05 Library Help Top A vector dataset consists of a directory a marker file ending with DIR and an INTREPID standard information isi file Inside the directory there are Two index files A marker file called INDEX INDX A data file for the index called INDEX PD A survey information file called SurveyInfo This file is obsolete See Vector dataset field aliases for details Three files for each field of the dataset A marker file for the field with the field name and an ending LINE PNT or POLY depending on the type of dataset A data file with the field name and the ending PD A header file containing information such as datum projection and statistics with the field name and the ending PD vec Line datasets have field marker files ending in LINE Point datasets have field marker files ending in PNT Polygon datasets have field marker files ending in POLY In this section INTREPID standard information isi files for vector datasets Vector dataset field aliases Group by fiel
6. printing process These files therefore are stored in the system temporary directory e g temp INTREPID file names Parent topic Generally speaking you can use any name that is acceptable to your operating INTREPID system for INTREPID datasets but we recommend that you note the following database file and data We recommend that you do not use spaces in file folder or vector dataset field structures names Use _ instead R05 Library Help Top INTREPID uses the character for cetain purposes We recommend that you don t use it in file folder or vector dataset field names INTREPID is file compatible between UNIX and Windows This means that you can create and process the same datasets with either version of INTREPID There are some small issues to remember however Windows and Mac OS are case insensitive but case preserving For example if a dataset is called MyGrid ers it will always show as MyGrid ers However if you type mygrid ers when specifying the dataset INTREPID locates MyGrid ers for you Linux and Solaris are case sensitive and case preserving This means that theoretically you could have two datasets existing side by side one called MyGrid ers and the other called mygrid ers To minimise risk of confusion it may be easier to avoid capital letters and spaces in file names 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top INTREPID file Paren
7. represents the difference between total gravity magnitude of the data point and the mean total gravity magnitude of the group traverse line The angle of the black arrow represents the total horizontal component of the gravity reading This indicates the direction if the gravity field away from vertical North Total Gravity Magnitude t Total Horizontal Component TY d Structural geology data B B b b p Structural geology data types show the angle of a geological feature INTREPID tools show this as a green arrow and a black arrow The green arrow shows strike a view from above of the combined X and Y directions The black arrow shows a view from the side of the dip Complex data aT INTREPID tools show complex data as a line segment The angle and length of the line segment represents real and imaginary parts as a vector 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 31 Library Help Top lt 4 Back gt Fields associated with lookup tables Parent topic By using integer fields with a lookup table in an auxiliary file you can create an Data Types in enumerate ordinal data type in an INTREPID vector dataset A field of this type INTREPID A R dads will have a set of possible values such as words or phrases corresponding to integer values Internally the field 1s of integer type but INTREPID always displays
8. you have finished Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 10 Library Help Top 4 Back gt Group by fields Parent topic Vector dataset file and directory structure Library Help Top It is useful to be able to organise vector dataset data points into groups Line datasets have one group for each traverse line Gravity Point datasets have one group for each gravity station INTREPID creates the groups using a group by field INTREPID stores data in the order in which it arrives from the Import tool When you nominate a group by field INTREPID looks for changes in this field between data points Whenever the value of the field changes in the import and storage order INTREPID creates a new group During import INTREPID records the group as an entity independently of the value of the group by field Therefore as a result of changes to the data you are able to have adjacent groups with the same group by field value This is useful for flight path datasets since you can remove sections of traverse line data and convert the remaining segments to separate lines If you have two group by fields during import INTREPID will create a new group when either of them changes If you create a new group by field after INTREPID creates the dataset you can do this using the Spreadsheet Editor it can only provide
9. 00 Coords End Pens White 1 0 Black 1 0 Red 1 0 Green 1 0 Yellow 1 0 Blue 1 0 Magenta 1 0 Cyan 1 0 Device End Macro End Macro Begin Name PostScript Device Begin Name PostScript Class Raster Coords Begin dpi 72 Coords End Device End Macro End Macro Begin Name InterViews Device Begin Name InterViews Class Raster Coords Begin dpi 72 Coords End Device End Macro End Library Help Top 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 40 Library Help Top lt 4 Back gt Macro Begin Name WIN32 Device Begin Name WIN32 Class Raster Coords Begin dpi 300 Coords End Device End Macro End mapcomp cfg This file contains definitions for all elements available in hard copy composition using the INTREPID Hard Copy Composition tool See Map composition configuration files R21 for further information and a listing menu The menu file contains specifications for the Project Manager menu bar It resides in the install path config directory where install path is the location of your INTREPID istallation See Customising the Project Manager menus in Configuring and using INTREPID R04 for details intrepidlock For INTREPID to process your data i e work in other than demonstration mode you must have an authorisation key file called intrepidlock present in the install path config directory where i
10. ID standard information isi file contains a list of aliases representing specific dataset roles such as location and the name of the file associated with each alias the file which plays the role Many of the INTREPID tools use the common aliases X Y location LineNumber Line Type Fiducial and FlightNumber Some INTREPID tools for example Gravity Tie Line Levelling and Radiometrics include other aliases for their own purposes If a tool uses special aliases its chapter will contain the relevant details If you develop your own software to access INTREPID datasets you may use your own aliases Most INTREPID modules that access vector datasets require certain alias definitions If essential aliases are not defined INTREPID may prompt you for filenames it would normally find in the alias definition An alias definition for a field is an Alias statement in the field s Begin End block within the INTREPID standard information isi file See INTREPID Auxiliary files for a description 1 Datasets earlier than INTREPID version 3 7 have a survey information file called surveyinfo within the dataset directory INTREPID maintains it for backwards compatibility Avoid interfering with surveyinfo 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 9 Library Help Top lt 4 Back gt Editing aliases You can edit the aliases of a dataset using a
11. INTREPID User Manual INTREPID database file and data structures R05 1 Library Help Top 4 Back gt INTREPID database file and data structures R05 Top Library Help Top This appendix describes in detail the database directory and file structure of INTREPID software and data In this chapter The INTREPID directory structure Temporary directories INTREPID file names INTREPID file types Vector dataset file and directory structure Grid dataset file and directory structure INTREPID standard information isi files Projects file and directory structure Data Types in INTREPID datasets File Masks INTREPID Auxiliary files INTREPID licence data 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual Library Help Top The INTREPID directory structure INTREPID database file and data structures R05 2 4 Back gt Parent topic The files belonging to the INTREPID package are normally stored within the INTREPID following directory structure You can locate the directory intrepid and its database file subdirectories anywhere in your directory tree and data structures R05 intrepid the main INTREPID directory bin contains all machine dependent files and script files for starting INTREPID modules classes class and image libraries images config INTREPID configuration files and the security lock file config calibration_spe
12. Index file synchronising the data in all of the PD vector dataset Binary files DO NOT DELETE SurveyInfo survey information file vector dataset ASCII PD vec header file for a field containing datum projection vector dataset ASCII and statistical information PD data file for the index or for one field of a vector vector dataset Binary vector field dataset Library Help Top 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 5 Library Help Top Back gt File Name File Type Associated Format Extension with LINE file marking the presence of a field line dataset Binary PNT file marking the presence of a field point dataset Binary POLY file marking the presence of a field polygon Binary dataset AREA file for polygon datasets old version old polygon Binary dataset rpt ASCII columns import report line dataset ASCII outside its directory format ASCII columns or Geosoft XYZ export vector dataset ASCII specifications Vector dataset files compatible with INTREPID gdb Vector dataset in Geosoft format vector dataset Binary instead of DIR and the dataset directory isi INTREPID creates a isi file for all datasets that vector dataset ASCII it accesses except for Oracle databases See the explanation of isi above jdbc Connection to Ora
13. O 0000ff FFT ploti 0000 FFT plot2 00f 00 2012 Intrepid Geophysics Back gt INTREPID User Manual Library Help Top Library Help Top FFT plot3 ffaa00 FFT plot4 ff00ff FFT plot5 aa3030 FFT mark color ffffff FFT axis color ffffff FFT tick color ffffff FFT graph color 444444 FFT double buffered off FFT iconName gridfilter level font MS Sans Serif bold 14 level background c2c2c2 level foreground 000000 level double buffered off level active point color 0000ff level inactive point color black level point color 0000 level line color white level mark color 0000ff level axis color fffffFf level tick color ffffff level graph color 696969 level rubber band 00ff00 level command c2c2c2 level iconName level level geometry 800x700 2012 Intrepid Geophysics INTREPID database file and data structures R05 38 lt 4 Back gt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 39 Library Help Top 4 Back gt devices cfg The devices cfg file specifies the hard copy devices which INTREPID can use Each print device that you use must have an entry in this file so that INTREPID can access it Contact our technical support service if necessary for assistance with specifications for your devices Here is an example of this file Macro Begin Name hpgl Device Begin Name hpgl Class Vector Coords Begin dpi 2
14. Top Library Help Top 4 Back gt Polygon dataset The X location field is called lat the Y location field long The survey information file for this dataset would be as follows Alias Begin X lat Y long Alias End Field header vec information Each field in a vector dataset has a header file with the extension vec The header file has INTREPID auxiliary file structure See INTREPID Auxiliary files for details INTREPID generates and modifies the header files as you create and process the dataset fields From version 3 7 INTREPID extracts the important information from the vec files and includes it in the INTREPID standard information isi file For example it extracts statistics datum and projection Since the important information is in the isi file you can generally ignore the vec file You can manually edit some header file entries 1f required Here are some examples of header files A coordinate field from a projected dataset DatasetHeader Begin Version 4 0 DataType Line VectorInfo Begin NrOfLines 36 NrOfCellsPerLine 1014 NrOfBands 1 VectoriInfo End CoordinateSpace Begin Projection TMAMG54 CoordinateType EN Units METERS Datum AGD66 CoordinateSpace End FormatInfo Begin Order 6 Width 16 Decimals 2 FormatInfo End DatasetHeader End The CoordinateSpace block from a coordinate field of a dataset with geographical coordinates CoordinateSpace Begin Proje
15. a potential field Component in DDF measurement Components in isi FieldComponents in Project Manager Gradient 3D components of a potential field gradient Gradient X component real 8 byte Vx Y component real 8 byte Vy Z component real 8 byte Vz Type string Vtype Structural Observation of structural geology Structural in DDF Geology Geology in isi Geology3d in Project Manager Strike of measurement angle real 8 byte Strike Dip of measurement angle real 8 byte Dip Type of rock code or description string Geo X component of measurement real 8 byte Sx Y component of measurement real 8 byte Sy Z component of measurement real 8 byte Sz Tensor Tensor examples Tensor Gradients real 8 byte Txx Txy Txz Tyx Tyy Tyz Tuv Library Help Top 2012 Intrepid Geophysics Back gt INTREPID User Manual Library Help Top INTREPID database file and data structures R05 27 4 Back gt Data type and Purpose Data Type of Auxiliary DDF Format Hints Components Component file amp DDF notation Observed Measurement Observed X gradient real 8 byte Ox Y gradient real 8 byte Oz Z gradient real 8 byte Oz Strength real 8 byte Ostrength Omag Tensors real 8 byte Oxx Oxy Oxz Oyx Oyy Oyz Ouv Bearing real 8 byte Obearing Type string Vtype Library Help Top 2012 Intrepid Geoph
16. additional data for each group It cannot have any effect on the group structure of the dataset INTREPID records whether a field is a group by field in the an GroupBy statement in the field s Begin End block within the INTREPID standard information isi file The possible values are Yes and No See Group by fields and field aliases in Importing to INTREPID datasets T05 for details about group by field identification during import See BREAK ON GROUP BY line in The INTREPID DDF format R08 for the notation identifying a group by field in an import data definition file DDF See Spreadsheet Editor T15 for information about using group by fields in the Spreadsheet Editor Merging gravity datasets T56 See Merging gravity datasets T56 for instructions on combining datasets so that data with matching group by field values ends up in the same group in the output dataset 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 11 Library Help Top 4 Back gt Traverse line numbers and types Parent topic Vector dataset INTREPID has a convention for assigning codes to different types of traverse lines The INTREPID tools use these codes to identify the line types For example the a Gridding tool will use the code to recognise and exclude tie lines from the gridding seructure process See Old Gridding T22 INTREPID stores t
17. agoola directory ebagoola DIR ebagoola isi ebagoola INDEX INDX INDEX PD SurveyInfo latitude LINE latitude PD latitude PD vec longitude LINE longitude PD longitude PD vec linenumber LINE linenumber PD linenumber PD vec linetype linetype linetype fiducial fiducial fiducial flightno flightno flightno magnetic magnetic magnetic LINE PD PD vec LINE PD PD vec LINE PD PD vec LINE PD PD vec Point and Polygon datasets Point and polygon datasets have a similar structure to the line dataset illustrated in Line dataset example except that they have instead of LINE 2012 Intrepid Geophysics PNT and POLY marker file endings Back gt INTREPID User Manual INTREPID database file and data structures R05 16 Library Help Top lt 4 Back gt Grid dataset file and directory structure Parent topic Grid datasets have three files with the same name but different endings INTREPID A database file INTREPID standard information isi file and data A data file with no extension or ending in PD structures R05 An ERMapper header file ending in ers If you have turned on ARC INFO or ERDAS IMAGINE access INTREPID will create grid files with header hdr projection prj and binary interleaved link PD bil files when you save a grid dataset In this section INTREPID standard information isi files for grid d
18. ard information isi file It is unlikely that you would need to examine these files or change them This section describes the files Survey information file SurveyInfo This auxiliary file contains a complete list of the aliases in the dataset All of its information is also in the INTREPID standard information isi file If the dataset existed before INTREPID 3 7 INTREPID transfers the SurveyInfo data to a new isi file the first time you open the dataset You can safetly ignore SurveyInfo Here are some examples of survey information files Line dataset The X location field is called Easting and the Y location field Northing The line number field is LINE The line type field is LINETYPE the fiducial field is FID the flight number field is flight and the clearance field is rad_alt The survey information file for this dataset would be as follows Alias Begin X Easting Y Northing LineNumber LINE LineType LINETYPE Fiducial FID FlightNumber flight Clearance rad_alt Alias End Point dataset The X location field is called X the Y location field Y the point group field is station_no and the point type field is point_type The survey information file for this dataset would be as follows Alias Begin X X Y Y PointGroup Station_no PointType point_type Alias End 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 13 Library Help
19. are brackets following the field name in DDF to identify the component See Field definition lines in The INTREPID DDF format R08 Compound data type definition table Some of the components listed here are optional or alternative The context detemines which are present in the import data or the resulting field data Data type and Purpose Data Type of Auxiliary DDF Format Hints Components Component file amp DDF notation Date Storing date information Date_type in DDF Date in isi Date in Project Manager Date in dd mm yyyy format string Date Year numeric Year Month numeric Month Day numeric Day Time in hh mm ss s format string Time Hour numeric Hour Minute numeric Minute Second numeric Second Julian day numeric Jday Days since 1st January Seconds since midnight numeric midnight_seconds Complex Complex numbers Complex Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 26 Library Help Top Back gt Data type and Purpose Data Type of Auxiliary DDF Format Hints Components Component file amp DDF notation Real part real 8 byte R Imaginary part real 8 byte I Vector Components of a 3 dimensional vector Vector in DDF Vector in isi Vector3d in Project Manager Component 3D components of
20. atasets Grid dataset ERMapper header ers files Multiband grid datasets Grid dataset example INTREPID standard information isi files for grid datasets Parent topic Data in a vector dataset INTREPID standard information isi file includes Grid dataset A in he m Data and band header information directory Data type structure Precision Datum and projection Statistics See INTREPID standard information isi files for a general description of these files Grid dataset ERMapper header ers files Parent topic Each grid dataset has an ERMapper header ers file in INTREPID auxiliary file Grid dataset format file and directory The information in the file enables you to open it in ER Mapper structure Here is an example of a ers file DatasetHeader Begin Comments Audit Stamp V3 1c 27 5 1996 Version 4 1 CoordinateSpace Begin Projection TMAMG54 CoordinateType EN Units METERS Datum AGD66 Rotation 0 0 0 CoordinateSpace End HeaderOffset 512 DataSetType ERStorage DataType Raster ByteOrder LSBFirst Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 17 Library Help Top Back gt RasterInfo Begin CellType IEEE4ByteReal NullCellValue 5 0E475 RegistrationCoord Begin Eastings 739961 150000 Northings 8420039 770000 RegistrationCoord End RegistrationCellX
21. cifies the display width for the column Decimals describes the number of decimal places displayed for the field You can edit the specifications in this block 1f required Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Field values lookup file specification This consists of a LUTFile INTREPID database file and data structures R05 15 4 Back gt filename statement You do not need to specify the full path of the file or its extension since all such files have a required leg extension and must reside in the install path 1lut directory where install_pathis the location of your INTREPID installation Place the specification statement in the Format Info Begin FormatInfo End block See Fields associated with lookup tables for further information RasterInfo Begin RasterInfo End If you examine statistics for the field by double clicking it in the Project Manager INTREPID will save a copy of the statistics report in this block From this time onwards whenever the data in the field changes INTREPID will update this report in the header file Vector dataset examples Parent topic Vector dataset file and directory structure Library Help Top Line dataset example A line dataset called ebagoola has 7 fields latitude longitude linenumber linetype flightno fiducial magnetic It consists of the ebagoola DIR and ebagoola PD files and the eb
22. cle database vector dataset ASCII instead of DIR and the dataset directory Includes information normally stored in a isi file INTREPID grid dataset files isi INTREPID standard information file dataset ASCII From version INTREPID 3 7 it replaces the files marked in this table ers Header file with ERMapper grid information Use grid dataset ASCII PD ers this to load and save an INTREPID grid dataset PD Grid data file grid dataset Binary GRID File marking the presence of a grid dataset grid dataset ASCII FFT Fast Fourier Transform and spectral domain grid grid dataset ASCII filter history audit trail file Grid dataset files compatible with INTREPID grd Grid dataset in Geosoft format instead of ers grid dataset Binary cdf Grid dataset in NetCDF GMT format grid dataset Binary instead of ers nc Grid dataset in NetCDF format that is compatible grid dataset Binary with JetStream instead of ers Library Help Top 2012 Intrepid Geophysics Back gt INTREPID User Manual INTREPID database file and data structures R05 6 Library Help Top Back gt File Name File Type Associated Format Extension with isi INTREPID creates a isi file for all datasets that vector dataset ASCII 1t accesses except for Oracle databases See the explanation of isi above INTREPID auxiliary files cfg c
23. ction GEODETIC CoordinateType LATLONG Datum AGD66 CoordinateSpace End 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 14 Library Help Top Back gt A field associated with a field values lookup file zones leg DatasetHeader Begin Version 4 0 DataType Line VectorInfo Begin NrOfLines 36 NrOfCellsPerLine 1014 NrOfBands 1 VectorInfo End FormatInfo Begin LUTFile zones leg Order 3 Width 7 Decimals 2 FormatInfo End DatasetHeader End See Fields associated with lookup tables for a listing of zones leg A Z field for which statistics has been reported DatasetHeader Begin Version 4 0 DataType Line RasterInfo Begin RegionInfo Begin Stats Begin NumberOfBands 1 NumberOfNonNullCells 28356 NumberOfNullCells 204 MinimumValue 1958 932983 MaximumValue 2006 137573 MeanValue 1972 159285 MedianValue 1972 159285 CovarianceMatrix 33 206414 Stats End RegionInfo End RasterInfo End DatasetHeader End DataType This line describes the type of dataset to which the field belongs Line Point Polygon VectorInfo Begin VectorInfo End This block describes the dimensions of the field The entries are self explanatory FormatInfo Begin FormatInfo End This block describes the format of the field for display in the Spreadsheet Editor Order specifies the column order position of the field Width spe
24. ctra radiometrics calibration data help Help files and documentation manuals algorithm Links with other software lynxdata gdads GDADS files and sample data home UNIX sample login environments sample_data cookbook sample_data examples sample_data guided_tours Cookbook datasets Example data Guided Tour data proj datum and projection parameter files temp directory for INTREPID temporary files kernel kernels for Spatial Convolution filters filter definition files sample_data examples ddf DDFs for Import lut lookup files form form files font INTREPID font descriptions form forms for the Hard Copy Composition tool Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 3 Library Help Top 4 Back gt Temporary directories Parent topic INTREPID uses a temporary directory on your hard disc for writing temporary files INTREPID during processing The path of the temporary files directory is specified in database file install cfg The default path is install path temp where install_pathis and data siructares the location of your INTREPID installation See Configuration cfg files menu and R05 intrepidlock for more information about install cfg When you are printing data under Windows the operating system controls the temporary files used in the
25. dard INTREPID information isi file See Vector dataset file and directory structure and Grid ali di dataset file and directory structure for details Process specification files Parent topic These files describe some INTREPID process and can be used to recall a process that INTREPID has been carried out or specify a process that you require Auxiliary files Task specification files Task specification files are text files containing the specifications for tasks to be performed by INTREPID tools See INTREPID task specification job files R06 for general information about these files History files History files called HISTORY and residing in each project directory contain an audit trail of processes carried out on the project Their syntax is the same as task specification files and you can use text from them in task specification files See Projects file and directory structure and INTREPID task specification job files R06 for general information about these files Hard copy specification files If you use the Hard Copy Composition tool or MAPCOMP language you will save your work in hard copy specification files These are text files with standard syntax and names ending in map See MAPCOMP Map Specification Language R20 for further information Datum and projection parameter files Parent topic The datum and projection parameter files specify the projections ellipsoids and INTREPID reference points s
26. ds Traverse line numbers and types Multiband vector dataset fields Viewing line datasets as point datasets Other vector dataset information files Vector dataset examples 1 Datasets earlier than INTREPID version 3 7 have a header file ending with PD The isi file replaces this file after version 3 7 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 8 Library Help Top 4 Back gt INTREPID standard information isi files for vector datasets Parent topic Vector dataset file and directory structure Data in a vector dataset INTREPID standard information isi file includes Field aliases Statistics Datum and projection Field and band header information Data type e Precision Group by indicator Report formats See INTREPID standard information isi files Vector dataset field aliases Parent topic Vector dataset file and directory structure Library Help Top You may wish to use a variety of file names for the fields and have several versions of some fields e g uncorrected and corrected X and Y data For this reason INTREPID uses a system of aliases for file names INTREPID may require a number of files to take roles in a process Each role is signified by an alias The alias system allows you to vary dataset filenames without having to laboriously specify them for each process A dataset s INTREP
27. et isi file Parent topic INTREPID MetaData Begin standard Name table race nias tensor Begin isi files Bands B6 band3 Begin Minimum Maximum Mean Variance Samples 4 Nulls 0 band3 End tensor End MetaData End Library Help Top 2012 Intrepid Geophysics 1 000000 6 000000 3 500000 8 333333 lt 4 Back gt 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 22 Library Help Top lt 4 Back gt Example of vector dataset isi file Parent topic r ad MetaData Begin stan bri Name BrokenHill information isi files UserNotes This is a demo dataset containing magnetics for the BrokenHill Area X Begin Alias X Minimum 530000 0 Maximum 540699 0 Mean 535399 4 Variance 14599 Samples 147031 Nulls 0 Projection TMAMG54 Datum WGS84 X End Y Begin Alias Y Samples 147031 Nulls 0 Projection TMAMG54 Datum WGS84 Y end FID Begin Alias Fiducial FID End LINE Begin GroupBy yes ByteOrder LSBFirst Comment The Line number Alias LineNumber LINE End microlevelled Begin DataType IEEE8ByteReal ReadOnly yes BandId mag Unit nT microlevelled End ReportFormat Begin Name Default Order X Y FID LINE microlevelled Width 12 12 10 6 10 Decimals 00002 DisplayNullAs 999 999 999 999 999 999 ReportFormat End MetaData End L
28. he line type codes in the field with the alias LineType See Vector dataset field aliases for an explanation of aliases You may already have a convention for using line numbers to identify line types The following table sets out the types of traverse line a common convention for line number allocation and the INTREPID line type code system Line type Line number convention INTREPID line type code Acquisition Line lt 7000 2 last digit O Tie Line gt 7000 4 last digit 0 Repeat Acquisition Line lt 7000 3 last digit 1 for first repeat traverse 2 for second repeat traverse etc Repeat Tie Line gt 7000 5 last digit 1 for first repeat traverse 2 for second repeat traverse etc Ignore this line n a 16384 Part of diurnal dataset n a 8 If your data does not have a LineType field but does have a convention for line numbers you can use the INTREPID Spreadsheet Editor T15 Spreadsheet tool to derive a line type field See Chapter 3 Spreadsheet Editor in Volume 2 for instructions Multiband vector dataset fields Parent topic Vector dataset file and directory structure Library Help Top If you have a number of Z values for each data point you can store them in separate Z fields or as a single multiband Z field if required Using the INTREPID ASCII columns import facility can import your data into either format See The INTREPID DDF format R08 especially the section Multiband fields i
29. ibrary Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Projects file and directory structure Parent topic INTREPID database file INTREPID database file and data structures R05 23 4 Back gt For an introduction to the project directory working directory and history file see HISTORY files in Introduction to INTREPID R02 and The HISTORY file location project directory working directory in Introduction to INTREPID R02 and data structures Project example R05 This simple project has some task and hard copy specification files a grid dataset ebagoola a line dataset eba mag and a polygon dataset region1 project1 project directory HISTORY process audit trail file imp ort_eba job a task specification file grid eba Jjob a task specification file eba print map a hard copy specification file ebagoola isi grid dataset ebagoola ebagoola ers eba mag DIR line dataset marker file eba mag isi line dataset header file eba mag line dataset directory INDEX INDX line dataset index files INDEX PD SurveyInfo survey information obsolete latitude LINE a field of the line dataset latitude PD latitude PD vec more fields regionl DIR polygon dataset marker file regionl isi polygo
30. ill work in your task or hard copy or specification files Z Programs whose names changed can still work readily after you install INTREPID version 3 1 Specifications of the size of your computer s RAM and the size of your swap file file used for virtual memory 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Library Help Top INTREPID database file and data structures R05 36 Config Begin e te HE lutDir S INTREPID 1ut kernelDir INTREPID kernel projDir INTREPID proj helpDir INTREPID help ddfDir INTREPID ddf fontDir INTREPID font formDir INTREPID form tmpDir INTREPID temp ram 32 swap 100 Aliases for Intrepid tools AdjustSpectra aspectra ConvolveImage cfilter Spreadsheet dbedit decorrugate decor dtrans dtrans Euler euler Export export flightEdit fedit FileManager fmanager Gamadj gamadj GridFilter gfilter GpsNavigationCorrection gpsnav Gridding gridding histogram histo hp_plot hp_plot Import import Levelling level LineFilter linefil MapComposition mapcomp MapPrint mapprint microLevel mlevel ProfileEdit pedit ProjConvert projconv queryindex qindex surveyDistance sdist Stitch stitch subsection subset ulevel ulevel vhbge vhbge vhbgeSpectra vhbgesp Config End 2012 Intrepid Geophysics q Back gt 4 Back gt INTREPID User Man
31. ion kernels specify spatial convolution filters for grid datasets They reside in the directory install path kernel where install pathisthe location of your INTREPID 1nstallation See Spatial Convolution Grid Filters T34 for further details Configuration cfg files menu and intrepidlock Parent topic INTREPID Auxiliary files Library Help Top The configuration files specify directories colours devices fonts sizes and configurations for INTREPID Configuration files reside in the directory install path config where install path is the location of your INTREPID installation Except for the security lock file they are text files in begin end block format You can edit them according to your requirements If you make incorrect changes to some configuration files INTREPID may not function properly We suggest that you seek advice from our technical support service before editing configuration files if you are uncertain about the changes required Colour specifications in these files are in a standard X11 syntax A st followed by three 2 digit hexadecimal numbers for red green and blue For example black 1s 000000 white is t red is 0000 green is 4 00 00 blue is 0000ff install cfg Specifies Directories used to store INTREPID files including the directory for temporary storage of work in progress i e the temp directory Aliases for program files so that Old program names st
32. irst Invariant 2D 3D Ratio Invariant Moving platform gravity data Observed data type INTREPID tools show this as a green arrow and a black arrow 32 2500 The green arrow shows a view from above of the 12 2700 combination of the X and Y components of the i gravity field 47 3000 The length of the black arrow represents the 32 3200 difference between total gravity magnitude of the 7 data point and the mean total gravity magnitude of 12 3500 the group traverse line The angle of the black arrow corresponds to the total horizontal component of the gravity reading This shows how far the gravity field is away from vertical Since the data type also contains a field strength value INTREPID shows this value next to the graphic Tensor grid dataset structure Parent topic The ERMapper and INTREPID implementation of a tensor grid uses six bands wih B Eas in the interleaved by line BIL method to store the components in the order Txx Txy Txz Tyy Tyz Tzz Each band is labelled and has default units of Eotvos datasets Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 30 Library Help Top Library Help Top 4 Back gt Moving platform gravity data Components data type We represent moving platform gravity data as a red arrow with two sections at right angles and a black arrow The length of the black arrow
33. ith colour lookup tables lut which reside in the same directory see above or hard copy composition legend files which also have the extension leg see below Hard copy composition legend files Hard copy composition legends associate values with attributes such as colour and marker size in hard copy compositions These are text files with standard syntax and names ending in leg See Map legend files R23 for details 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 42 Library Help Top Back gt INTREPID licence data Parent topic INTREPID database file and data structures R05 Library Help Top Use the INTREPID Licence Manager tool to manage your INTREPID licence For full instructions about installing INTREPID and applying your INTREPID licence see INTREPID Installation guide S05 This section explains the location of the licence data in the INTREPID installation Under normal circumstances you do not require this information Windows version To use INTREPID 1n normal mode you require an authorisation key file called intrepidlock to be present in your install path config directory where install pathis the location of your INTREPID installation Depending on the time we issued your first licence you may also require an authorisation device dongle attached to your parallel port or your USB port UNIX version T
34. k gt INTREPID standard information isi files Parent topic From INTREPID version 3 7 these files are INTREPID auxiliary files see INTREPID INTREPID Auxiliary files for details Each dataset has one It contains parameter database file values for the dataset and data structures R05 When you first create a dataset the isi file may contain only a small amount of information As you use INTREPID tools with the dataset or examine an aspect of it such as the aliases or the statistics INTREPID adds more information The isi files totally or partly replace some of the other auxiliary files in a dataset INTREPID maintains the replaced files for backwards compatibility If you want to change a property of the dataset edit the isi file rather than the replaced files The following sections describe the structure of isi files and give examples In this section Outer block of the isi file Blocks within the isi file Example of grid dataset isi file Example of vector dataset isi file Outer block of the isi file Parent topic INTREPID T A 4s standard information l isi files MetaData Begin Name Resource Version Integer UserNotes String List ColumnDefinition ColumnDefinition ColumnDefinition ReportFormatDefinition Extensions MetaData End Library Help Top 2012 Intrepid Geophysics lt 4 Back gt INTREPID User Manual INTREPID database file
35. listing It includes the extensions of compatible dataset formats in the masks See INTREPID file types for an explanation of the filename extensions The following table lists the masks that INTREPID uses See Direct access by INTREPID in INTREPID direct access import and export formats R11 for more information about formats that INTREPID can directly access and write to File or Dataset Type Mask All files x k Vector datasets DIR gdb jdbc shp Point dataset fields PNT Line dataset fields LINE Polygon dataset fields POLY Grid datasets ers grd cdf nc image formats also available see Image formats in INTREPID direct access import and export formats R11 History process audit trail files HISTORY Task specification files job Hard Copy specification files MAPCOMP language map Library Help Top 2012 Intrepid Geophysics Back gt INTREPID User Manual INTREPID database file and data structures R05 33 Library Help Top lt 4 Back gt INTREPID Auxiliary files Parent topic INTREPID uses a system of auxiliary files for various purposes such as defining INTREPID specifications and setting parameters These are ASCII text files with a standard database file fax and data Synrax structures rm A Begin Endblock enclosing keyword value declarations Each declaration occupies a new line There may be f
36. n The INTREPID DDF format R08 for details of the importing specifications and Importing ASCII Columns data in Importing to INTREPID datasets T05 for instructions Electromagnetic and radiometric data uses multiband fields The INTREPID standard information isi file includes band information for datasets See INTREPID standard information isi files for information 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 12 Library Help Top 4 Back gt Viewing line datasets as point datasets Parent topic Vector dataset file and directory structure gt gt To modify a line dataset for viewing as a point dataset Create a file with the extension PNT in the line dataset directory INTREPID will not look inside this file so it may have any content You can then open the dataset as a point dataset If you are using the Flight Path Editor you can choose Cancel when INTREPID prompts you for the Z fields for point colour and size if required Other vector dataset information files Parent topic Vector dataset file and directory structure Library Help Top Vector datasets include a number of auxiliary files besides the INTREPID standard information isi file INTREPID creates and maintains these files for backwards compatibility From version 3 7 INTREPID transfers all relevant information about a vector dataset to the INTREPID stand
37. n dataset information file regionl polygon dataset directory INDEX INDX INDEX PD SurveyInfo X POLY X PD X PD vec Y POLY Y PD Y PD vec Library Help Top 2012 Intrepid Geophysics Back gt INTREPID User Manual INTREPID database file and data structures R05 24 Library Help Top lt 4 Back gt Data Types in INTREPID datasets Grid datasets and vector dataset fields can be of the following types Parent topic INTREPID database file and data structures R05 Scalar data types Parent topic Data Types in Scalar including multiband scalar multiple values of the same type for example in 256 channel radiometrics data fields see Scalar data types Compound including vector tensor structural gology and observed see Compound data types Also in this section Background to the compound data types Vector and tensor field data coordinate conventions Representing compound data types graphically Tensor grid dataset structure Fields associated with lookup tables The INTREPID null value The following table shows the scalar datatypes listed in this section INTREPID datasets Data type Description Length Auxiliary file notation DDF Notation Scalar byte Unsigned 8 bit integer 1 byte Byte byte values 0 255 integer Signed 16 bit integer 2 bytes Signed16BitInteger integer 2 2 byte integer
38. nstall_pathis the location of your INTREPID istallation We provide this file when we issue an INTREPID licence Lookup and legend files Parent topic INTREPID Auxiliary files Library Help Top Colour Lookup Tables The colour lookup tables assign colours to values for displaying INTREPID data The files reside in the install path lut directory and have extension lut where install pathis the location of your INTREPID installation They are ASCII text files with the standard INTREPID Begin End block syntax see definition of the syntax at the start of this section Colour lookup tables should not be confused with field values lookup files which have extension leg and reside in the install path lut directory see below for details The lookup table definition lut file contains definitions of four parameters as well as the table Earth Resource Mapping publishers of ERMapper developed this format as an open standard Version Version number of the lookup table It must be within if it contains spaces Name Name of the lookup table It must be within if it contains spaces Description Description of the lookup table It must be within if it contains spaces NrEntries Number of possible values for the data being represented This corresponds to the number of lines in the LUT matrix 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 41
39. o use INTREPID in normal mode you require an authorisation key file called intrepidlock to be present in your install path config directory where install pathis the location of your INTREPID installation 2012 Intrepid Geophysics lt 4 Back gt
40. onfiguration specifications INTREPID ASCII proj projection parameter files INTREPID ASCII datum datum parameter files INTREPID ASCII projectionDB projections database file INTREPID ASCII lut colour lookup table INTREPID ASCII ker convolution kernel definition INTREPID or ASCII your data fdf filter definition file INTREPID or ASCII your data frm formula file containing INTREPID or ASCII 1n directory if then else specification for modifying your data specified by you data frm where install path is the location of your INTREPID ASCII in directory INTREPID installation Window specifications for install path Hard Copy Composition Do not modify these files form or store other files in this directory asc Radiometrics calibration spectra INTREPID ASCII DDF Data Description File your import ASCII data job task specification file your data ASCII spectrum asc report of Fourier coefficients with cycles per metre grid dataset ASCII log of power and average depth estimate after reverse FFT map hard copy specification in MAPCOMP language your hard copy ASCII data leg legend specification file for Hard Copy Composition your hard copy ASCII data leg where install_pathis the location of your a DDF file ora ASCII in directory INTREPID installation Field values lookup for vector dataset il 0m ath substituting values in ASCII columns import or field u associating with a field to display lookup results
41. t topic INTREPID database file and data structures R05 4 types lt 4 Back gt The following table contains a complete list of file types associated with INTREPID INTREPID l database file From INTREPID version 3 7 the INTREPID standard information isi file and data replaces these files structures R05 Early INTREPID file now obsolete File Name File Type Associated Format Extension with INTREPID software files exe program executable file and library INTREPID Binary dll so jar hlp help text file for online help currently being INTREPID ASCII replaced with more advanced on line help menu Project Manager menu specifications INTREPID ASCII mnu INTREPID project files HISTORY history audit trail file for project project ASCII ntout diagnostic report produced during process working ASCII nt username Windows only directory log INTREPID vector dataset files isi INTREPID standard information file vector dataset ASCII From version INTREPID 3 7 it replaces the files outside marked in this table directory PD Header file for a vector dataset vector dataset Binary vector header outside directory DIR File Marking the presence of a vector dataset vector dataset Binary Dataset directory has the same name outside its directory INDEX INDX File Marking the presence of the index file vector dataset Binary INDEX PD
42. text editor or while using the following tools The Project Manager See Managing dataset aliases in INTREPID Project Manager T02 The Old Project Manager See Editing the dataset aliases in INTREPID Old Project Manager T01 The Import tool See Editing the aliases in Importing to INTREPID datasets T05 The Levelling tool See Editing aliases in Line correction and tie levelling T30 The Line Filters tool See Editing aliases in Line Filtering T31 The Multi channel Spectra Processing and Correction tool See Multi channel gamma ray spectrometric processing C07 gt gt To edit the aliases of a dataset Note The Project Manager has a different user interface different to the one described here For instructions see Managing dataset aliases in INTREPID Project Manager T02 1 Select the dataset and display the Dataset Alias Editor according to the instructions for the tool you are using Edit Aliases Ex ry Edit Aliases line x x Edit Aliases linetype Y Dy x K PointType NONE Imm PointGrou NONE OK Cancel OK Cancel 2 Choose the alias you wish to change by clicking its button INTREPID displays a file selection dialog box 3 Choose the field for the alias See Specifying input and output files in Introduction to INTREPID R02 for information about specifying files 4 Repeat steps 2 and 3 for any other aliases you wish to change 5 Choose OK when
43. the corresponding values when you view and edit the data For example data in a dataset could belong to three different zones or to no zone at all You can have a field which internally can take the values 0 3 but which is associated with a lookup table as follows Lookup Begin Name Zones Type Label Label Begin Table 0 Other 1 Zone A 2 Zone B 3 Zone C Label End Lookup End INTREPID will always display the values Other Zone A etc depending on the internal value of the field Fields associated with lookup files may contain values other than those in the lookup file INTREPID will use the actual value of the field if there is no corresponding lookup file value In the Spreadsheet tool INTREPID will use the results of the lookup as if they are the actual data stored in the field See Fields associated with lookup tables in Spreadsheet Editor T15 for instructions This feature of INTREPID provides a simple and powerful method of transforming data using Import and Export You can import data with one set of values transform it instantly using an associated lookup file then export it with the new values obtained from the lookup file Field values lookup files must reside in the install path lut directory where install path is the location of your INTREPID installation use the format illustrated above and have the extension leg If you import a dataset using a DDF you can specify a field values look
44. tions Parent topic Data Types in INTREPID datasets Library Help Top It is conventional to think of the vertical component of gravity as pointing down On the other hand Cartesian coordinates are right handed with East as X North as Y and Elevation as Z This 1s often called ENU East North Up New generation geophysical field data is recorded in all combinations of ENU NED and END END 1s a left handed system Bell FTG tensor data has this convention The IPHT magnetic tensor is ENU The Earth s magnetic field IGRF is often used in NED when the vector form is required INTREPID tries to alert users when confusion about this could make a big difference in results It is however important for you to be aware of your tensor data s coordinate system before you try to process it 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 29 Library Help Top lt 4 Back gt Representing compound data types graphically Parent topic INTREPID tools represent some compound data types graphically This section Data Types in explains these techniques INTREPID datasets Tensor data INTREPID tools use the Mohr circle tensor diagram for tensor data For an explanation of gravity tensors see http www bellgeo com tech technology_theory_of_FTG html Rotational Components Deviatoric Invariant Principal Max Components 74 I Mid F
45. ual Library Help Top Library Help Top intrepid cfg The default properties file contains window control size colour and font specifications for INTREPID generally and for each INTREPID tool INTREPID database file and data structures R05 37 lt 4 Back gt The following extract from a version of intrepid cfg shows the specifications covering INTREPID as a whole and examples of the specifications for two INTREPID tools gui mswin PopupWindow overlay true PopupWindow saveUnder on TransientWindow saveUnder on green background 00f 00 blue background 0000ff black background c2c2c2 white background 4 00ff00 default c2c2c2 wheat background c2c2c2 wheat foreground c2c2c2 foreground 000000 font MS Sans Serif bold 14 background 000000 title foreground 333333 brush width 0 double buffered off flat c2c2c2 dark 444444 light dddddd pannerthickness 4 thickness 4 framethickness 2 background c2c2c2 editorflat c2c2c2 editordark 000000 editorlight eeeeee editorframethickness 2 pedit font MS Sans Serif bold 14 pedit background c2c2c2 pedit geometry 650x450 pedit double buffered off pedit iconName pedit fedit font MS Sans Serif bold 14 fedit background c2c2c2 fedit geometry 650x520 fedit line color black fedit double buffered off fedit iconName flightEdit FFT geometry 760x650 FFT font MS Sans Serif bold 14 FFT background c2c2c2 FFT plot
46. up file for a field in the DDF INTREPID will use the values from the lookup file for the data in the field See Field definition lines in The INTREPID DDF format R08 for details INTREPID records the association of a field with a lookup file in the field header vec file See Field header vec information for details You can specify a lookup file for a field manually by editing the field header file Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top The INTREPID null value Parent topic Data Types in INTREPID database file and data structures R05 32 lt 4 Back gt Fields without values contain a standard INTREPID null value When INTREPID imports data from other formats it assigns this value to empty cells The following menace mn table contains the standard values of null for each data type Data type Value of null Byte 0 Single precision integer 32768 Double precision integer 2147483648 Floating point single and double 5 0E75 Logical 0 String 25549 File Masks Parent topic INTREPID database file and data structures R05 When INTREPID displays a list of files including field files or datasets it finds them by listing certain file types INTREPID recognises file types using a mask on the file names INTREPID often uses the DIR LINE PNT POLY marker files to locate vector data for
47. upported by INTREPID They reside in the directory geile DING install path proj where install path is the location of your INTREPID installation See INTREPID s supported datums and projections R09 for further details Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 35 Library Help Top 4 Back gt Import Export format files Parent topic INTREPID Auxiliary files Data Description Files DDF Data Description Files contain specifications for importing ASCII files containing data in columns into INTREPID vector datasets See The INTREPID DDF format R08 for a description and Importing ASCII Columns data in Importing to INTREPID datasets T05 for instructions on the use of DDFs BMRStandardChannels AGSO vector data BMRStandardChannels contains field names and other specifications for importing AGSO vector data See Importing AGSO vector data in Importing to INTREPID datasets T05 for further information Export format specification files These files contain specifications for exporting a vector dataset to an ASCII text file or a Geosoft XYZ file The export format file for a dataset has standard syntax is called format and resides in the dataset directory See Export specification files in Exporting from INTREPID datasets T07 Convolution kernel files Parent topic INTREPID Auxiliary files The convolut
48. urther Begin End blocks nested within the outer block Lines beginning with are comment lines for you to include information for people to read about the file INTREPID ignores the contents of these lines The Comment Begin Comment End syntax can also be used to define a block of comment lines INTREPID treats text enclosed in asa single line even if you have split it into several lines for better readability Here is an example Macro Begin Name hpgl Device Begin Name hpgl Class Vector Coords Begin dpi 200 Coords End Colour Thickness Pens White 1 0 Black 1 0 Red 1 0 Green 1 0 Yellow 1 0 Blue 1 0 Magenta 1 0 Cyan 1 0 Device End Macro End We supply a number of auxiliary files in each category with INTREPID You can use these files as they are or use them as templates for your own new auxiliary files You can edit auxiliary files with any text editor In this section Dataset auxiliary files Process specification files Datum and projection parameter files Import Export format files Convolution kernel files Configuration cfg files menu and intrepidlock Lookup and legend files Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 34 Library Help Top lt 4 Back gt Dataset auxiliary files Parent topic INTREPID datasets have auxiliary files mainly the INTREPID stan
49. ysics 4 Back gt INTREPID User Manual INTREPID database file and data structures R05 28 Library Help Top 4 Back gt Background to the compound data types Parent topic Data Types in INTREPID datasets A family of derived classes have been designed to honour all the commonly available airborne geophysical observation packages Magnetic gradiometry Specifically for magnetic gradiometry systems the magnetic intensity plus e Vertical gradient only Transverse gradient wing tip sensors Transverse amp longitudinal gradient wing tip amp tail stinger All gradients full tri axial system All components of a field Tensor gradients Moving platform gravity For moving platform gravity the vertical component if available plus Full tensor gradients Bell Vertical component plus motion monitors L amp R ZLS e 2 horizontal curvature tensor Falcon system 3 gravity components Sander With this approach each variant is delegated the task of enforcing any innate invariant relationships eg tensor and positive definite symmetric trace invariance rotational invariance boost symmetry etc This innate behaviour can be relied upon to carry through in any process involving a manipulation of itself with another reading This greatly assists the development of algorithms which work with all the various systems in a physically consistent way Vector and tensor field data coordinate conven
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