Conversion Tool for Time Series Data Processing User Manual
Contents
1. Open file list and navigate to your TimeSat working directory C DataConversion NDV_Timesat and select as file list ndv_2years txt and press Open Select from the file list an image and in the TSM_imageview specify for no of rows in 785 and for No of columns per 1009 subsequently press Draw see also figure 4 2 Figure 4 2 File list and image visualization in TimeSat Select image file from list 6 ed CJDataConversion NDY_TIMESATindy_20100101 img v C DeteConversionNDY _TIMESA T indy _20100221 img CDateConversionNDV _TIMESAT indy_20100301 img CDateConversionNDY _TIMESA T indy _2010031 1 img CDateConversionNDY _TIMESAT indy_20100321 img CDateConversionNDV CDataConversionNDV _TIMESAT indy_20100411 img C DateConversionNDY _TIMESATindy_20100421 img C DeteConversionNDV _TIMESAT indy _20100501 img CuDateConversionNDV_TIMESAT indy_20100511 img CuDetaConversionNDY _TIMESAT indy _20100521 img C DataConversionNDV_TIMESAT indy _20100601 img CDateConversionNDV _TIMESAT indy _201 00611 img z 3 a C OetaConversionNDV_TIMESATindy_20100621 ing CiDateConversionNDV_TIMESATindy_20100701 img c TIMESAT indy _20100711 img CuDetisConversionNDV_TIMESAT indy 20100721 img C lDetaConversionNDV_TIMESAT indy 20100801 img C lDeteConversionNDV_TIMESAT indy _20100811 img C lDataConversionNDV_TIMESATindy 20100821 img CDataConversionNOV_TIMESAT ndv 20100901 img2. Open the Tab wis 2 Timesat and specify the appropriate input maplist here ndv is used and select the output directory here C DataConversion NDV_TIMESAT is used see also figure 4 1 Note that here the Force data type option is used This is done as the data format byte is known To export the data press the button Export to TimeSat After the export processes has completed use the Windows Explorer and navigate to the output directory Check the content of this directory A total of 101 img files and a text file NDV txt should have been created For a listing of the ndv txt file see also figure 4 1 Use Notepad to open the file NDV txt Modify the first line change 101 being the number of original layers into 72 as we are going to process only 2 36 dekades for the years 2010 and 2011 only Delete the content from line 74 onwards the link to the files for 2012 and use from the Notepad menu the option File gt Save As and specify as new output file NDV_2years txt and press Save 15 Figure 4 1 Export time series from ILWIS in TIMESAT format E Time Series Data Conversion and MapList Rename Utility File Edt Search View Encoding Language Settings Macro Run Window Configuration Rename ILWIS Maplst ILWIS2 SPIRIT ILWISZ HANTS Ihvis2TimeS amp Back2 ILWIS oPHR see hR IC Oe 2 E ndvi _20100101_outhd ndv tet Input Map st r
3. download IrfanView and install it using the default settings From the IrfanView menu select the option SlideShow Select under Look in your quicklook sub directory C DataConversion ndv_quicklooks Press the Add All button and set the other parameters as given in figure 3 10 Figure 3 10 IrfanView animation setup Slideshow Slide advancement Automatic after 0 600 seconds Play Sioa Look in C NDV_Quicklook Automatic after mouse keyboard input M ndvi_20120701 png ndvi_20120711 png Cancel ndvi_20120721 png ndvi_20120801 png ndvi_20120811 png ndvi_20120821 png lt S ndvi_20120901 png ndvi_20120911 png ndvi_20120921 png ndvi_20121001 png ndvi_20121011 png Sample _Presentation pptx File name ndvi_20121011 png ndvi _20100101 png n Files of type All files v D file folder F file name X file index Ex EXIF ix IPTC Playin Window mode Sideshow fies 101 C DataConversion NDV Quicklook ndvi_ 20100101 px pos Y pos C DataConversion NDV_Quicklook ndvi_20100111 png 7 C DataConversion NDV_Quicklook ndvi_20100121 png Widthc 600 Height 400 C DataConversion NDV_Quicklook ndvi_20100201 png C DataConversion NDV_Quicklook ndvi_20100211 png Salen C DataConversion NDV_Quicklook ndvi_20100221 png C DataConversion NDV_Quicklook ndvi_20100301 png C DataConversion NDV_Quicklook ndvi_20100
4. gt Time series gt Create Quick Looks From the menu select the option File gt Open and select from the sub directory C DataConversion Ancillary the file create_ql tnt The settings are automatically incorporated if this is not the case specify them according to the settings given in figure 3 9 Figure 3 9 Quick Look template settings Create Quick Looks File Quick Look template QNQ template C DataConversion Ancillary indv_template qnq Files Input directory C DataConversion NDV_SPIRITS Input filenames prefix ndvi_ date YYYYMMDD Output directory C DataConversionNDY _Quickook Output filenames prefix ndvi_ date yyyymmDD Time Series Start date 20100101 End date 20121011 l m New view Edt Periodicity Dekad v suffix _out CJ suffix format YYYYMMDD format YYYYMMDD Check if your settings correspond to figure 3 9 and if this is the case press Execute to generate a time series of Quick Look images in png format Wait until the process has finished and check using your Windows Explorer the sub directory C DataConversion ndv_quicklooks You should have obtained 101 new quick look images 3 6 Creating of animation and using it in a Power Point Presentation After you have validated that 101 new png files have been created in the output directory C DataConversion ndv_quicklooks open IrfanView If not available on your system
5. 6 3 Time series data processing and data transformation from ILWIS to SPIRITS ccecce 7 3 1 PACE COGIC EI OMN csoaccteedecetnsctiasesaccenceeepeatiabewapsaapneren teatime E N eas PE TE aTa e Ei EE E 7 3 2 W ES E E E E EEE E EEE A EE E 7 3 3 ILWIS for time series data visual inspection ssssessssereseesssrreressrrrrrresssrereresserrrreesserereere 9 3 4 Map List rename and export to SPIRITS cccccssscccssececesececeeseeeeescecseeeeeeeaeeeseaceeseeeeeeees 10 3 5 Create a Quick look in SPIRITS and export a Quick Look time series 11 3 6 Creating of animation and using it in a Power Point Presentation cccccceeseseeeeseeeeees 12 3 7 Data transformation from SPIRITS to ILWIS c ssscsscccecccceeecaeesesseececcceeessaeaneeseeeeeeeeees 13 4 Time series data processing and data transformation from ILWIS to TIMESAT s00cceee 15 4 1 Modu COo T EE E E E 15 4 2 NDV Data transform from ILWIS to TIMESAT s ssssccccccccececanessssescececeeessaeaaaeseeseeeeeees 15 4 3 TIMESA TUNGUR arrir ano A TE 16 4 4 Data transformation from TIMESAT to ILWIS c ccccccccccccccecesesesseececceeeeesaueasaseeeeeeeeees 18 5 Time series data processing and data transformation from ILWIS to HANTS seeen 21 5 1 GEOG IC EIGN peenei ei EE E E E ERE E EAEE EEEE E EEE E 21 5 2 Export of time series data from ILWIS to HANTS cccccccsssccecceeececeeeseeeeeeeseceseeeaeeeeeas 21 Appendix 1 Internet Sources of Open So
6. C iDateConversionNDV_TIMESATindy 20100911 img C lDataConversionNDV_TIMESATindy 20100921 img ClDeteConversionNDV_TIMESATindy_20101001 img C OataConversion NOV _TIMESAT indy 20101011 img C DetaConversionNDV_TIMESATindy_20101021 img C DataConversionNDV_TIMESAT ndv 20101101 img C lDetaConversionNDV_TIMESATindy_20101111 img C DataConversion NDV _TIMESATindy_20101121 img COstaConversion NOV _TIMESATindy_20101201 img C DataConversion NDV _TIMESATndv_20101211 img E gy E E aN ag CDateConversionANDY _TIMESAT indy_20110111 img CiDataConwersion ND TIMES A Tindty 200101 21 ima d Select image file then choose format and press Draw in main window Eventually select some other images from the file list and press Draw You can modify the Image display scaling by adjusting the slide bars for further details consult the online TimeSat manual 4 3 TIMESAT filtering Activate the TimeSat Menu System and select File gt Preferences press Browse and select your working directory here C DataConversion NDV_TimeSat and press OK twice Then select the option Analyse time series data to find best fit TSM_GUI In the TimeSat Graphical User Interface select from the menu the options File gt Open list of image files as Input file list specify 16 C DataConversion NDV_TimeSat ndv_2years txt as No of years specify 2 note that the 36 dekades are automatically assign
7. NDVI files from VGT4Africa for Burkina Faso from http free vgt vito be from 20100101 20121011 and store the zip files in the sub directory Burkina_S1ONDV You can also download the VGTExtract utility with JAVA Virtual Machine from this location and install it Download and install the other software utilities like FWTools GDAL HANTS ILWIS372 IrfanView SPIRITS and TIMESAT For download locations and additional installation instructions see URL s given in appendix 1 Disk space required when going through this set of exercises apart from the software is at least 1 75 GB Ensure that you have 2 GB at your disposal before you start 3 Time series data processing and data transformation from ILWIS to SPIRITS 3 1 Introduction This exercise example will focus on the use of an NDVI time series data set derived from the SPOT Vegetation Instrument for the Burkina Faso region from 01 01 2010 up to 11 10 2012 The freely available data was obtained from http www vegt4africa org The temporal resolution is 10 days resulting in 101 temporal events spatial resolution is approximately 1 km and the data has geographic coordinates Here attention is mainly on data import eventual pre processing in ILWIS and subsequent data transformation into SPIRITS Further temporal analysis in SPIRITS is not described here but use can be made of relevant documents from the internet location provided see appendix 1 In order to proces
8. Representation Pseudo From the main ILWIS menu select the options Operations gt Statistics gt MapList gt MapList Graph Select as MapList ndv_filtered use a fixed stretch from 0 to 255 activate the option Always On Top Now click with the mouse on a location in the map ndv_filtered_20100101 In the graph window you will see the filtered NDVI for that specific location use Clipboard Copy and paste the data into a new Excel Spread Sheet Now change the MapList to ndv which is available in the sub directory NDV_ILWIS Now you see the original ndvi profile for that location again use Clipboard Copy and paste the data as another column in the open Excel Spread Sheet Note that the data is of a different time range only the first 72 records are common See also the figures below Figure 4 5 MapList graphs for original left and filtered right NDVI and combination of both time series for row column number 334 368 ha Maplist Graph bi Maplist Graph nay yj Clipboard Copy I Continuous 7 Always On Top MapList ndv_fitered z Clipboard Copy F Continuous T Always On Top F Fastech F Fateh 255 255 0 0 1 101 1 334 368 27 13 0 13 01 41 57 N 2 43 20 68 W 20 248 334 368 2 7 13 0 13 01 41 57 N 2 43 20 68 W 0rg_NDV Filt_NDV The combination of both data ranges original and filtered clearly chows the impact of the
9. lt enter gt twice from the keyboard Check the content of your working directory A file ndv_process_ihs should have been created If this is not the case during the first run double click with the mouse on the batch file 21 ndv_process bat to execute the operation once more and make sure you have activated the Create using IHS transform option as indicated in the figure below Figure 5 2 Create a HANTS batch file HANTS User Interface Project Analysis Synthesis IHS Bat file Store project info in ndv_process_tsp v Pack ndv into ndv_process_pif v Store HANTS processing parameters in ndv_process_hcf V Unpack ndv_process_pof into amplitude and phase images Store Synthesis processing parameters in ndv_process_scf Create ndv_process_psf using Synthesis algorithm ww cr ra V Create ndv_process_pof using HANTS algorithm ra ra F F Create ndv_process_ihs using IHS transform Bat fle C DataConversion NDV_HANTS ndv_process bat Browse The output IHS image is a single Band Sequential BSQ 8 bit per pixel output image file containing 3 bands in the order red green blue To import the image in ILWIS navigate with ILWIS to your working directory here C DataConversion NDV_HANTS is used and type the following expression in the ILWIS command line hants_ihs maplist ndv_process_ihs genras Convert 1009 3 0 BSQ Byte 1 NoSwap CreateMpr and press lt en
10. 01 img DataConversi on NOV_HANTS NDV_20100811 img DataConversi on NOV_HANTS NDV_20100821 img DataConversi on NDV_HANTS NDV_20100901 img DataConversi on NDV_HANTS NDV_20100911 img DataConversion NDV_HANTS NDV_20100921 img DataConversi on NDV_HANTS NDV_20101001 img DataConversi on NDV_HANTS NDV_20101011 img DataConvers i on NDV_HANTS NDV_20101021 img omges Cc Cc Cc Cc C C Sa Cc C Cc C C G C C C Cc C C Cc C Cc C C C C C Cc Cc After the export processes has completed use the Windows Explorer and navigate to the output directory Check the content of this directory A total of 101 img files and a text file NDV txt should have been created For a listing of the ndv txt file see also figure 5 1 Use Notepad to open the file NDV txt Open HANTS if not done already and specify the settings according to those provided in Appendix 5 for the Project Analysis Synthesis and IHS Tabs Note that for the IHS Tab these are the expected input files which still need to be created The Bat File settings are provided in figure 5 2 Activate the options as provided here and press the option Create Use the Edit option to view the content of the batch file created and subsequently press Run to execute the process A new MS DOS window is opened showing the progress of the transformation procedure At the end the user has to accept the pause command by pressing
11. 311 png C DataConversion NDV_Quicklook ndvi_20100321 png C DataConversion NDV_Quicklook ndvi_20100401 png C DataConversion NOV_Quicklook ndvi_20100411 png C DataConversion NDV_Quicklook ndyi_20100421 png C DataConversion NDV_Quicklook ndvi_20100501 png C DataConversion NDY_Quicklook ndvi_ 2010051 1 png C DataConversion NDV_Quicklook ndvi_20100521 png C DataConversion NDV Quicklook ndvi 20100601 pnq Show Preview image lt A After having provided the settings press the option Play Slideshow and evaluate if the animation is according to your requirements Press the lt Escape gt button on your keyboard to stop the animation and select 12 from the main IrfanView menu the option SlideShow again If not satisfied you can modify some of the settings and repeat the procedure again If satisfied press the option Save slideshow as EXE SCR specify the settings as given in figure 3 11 and press Create Figure 3 11 Create animation settings Save slideshow as EXE SCR The slideshow EXE SCR will be created using your current sideshow tul screen settings Options Create EXE file Stand alone slideshow presentation exe Create SCR file Screensaver scr Save result file to folder C DataConversion NDV_Quicklook Result fle name correct extension will be added automaticaly ndy_burkina Check in our output directory if the ndv_burkina exe is created usin
12. Common settings Data range _ to 255 Amplitude value 0 Spike method 37 Ti in 0 none v Me index no Seasonality data Number of nodata 0 C Lock axes scaling V x tick at year C Gridiines Savitsky Golay fit Season Start End Length Base val Peak t Peak val Ampl L 1 2059 3188 113 6 amp 7 26 07 1689 101 Class specific settings Start of season Seasonal par 05 L Force minimum pariah 1 amplit A No of seasons year 1 No of envelope a Season start 05 terations Savisky Golay 4 Adaptation 2 0 window size Season stop os strength Current directory D timesat31_beta compiled Vin32 From the User Interface menu select the option Settings gt Save to Settings file and under Common settings now change the Rows to process from 1 to 785 and Columns to process from 1 to 1009 as Job name specify tsm_filter_settings see also Appendix 4 Subsequently from the menu select the option File and Save settings file as and specify in your working directory here C DataConversion NDV_TimeSat as file name tsm_filter_final and press Save You can close the TSM GUI and the TSM_imageview windows as well as the file list window Note the two open TimeSat windows the TimeSat Menu System and the TimeSat DOS window From the TimeSat menu system select the option Create and edit settings file TSM_setti
13. FACULTY OF GEO INFORMATION SCIENCE AND EARTH OBSERVATION ITC A SSS WS _ NN TESS SSS SSS WSS l ILS Ss NY N G Zu ss PEE z DAA A for J Ed L WY a 2 ON WE Conversion Tool for Time Series Data Processing User Manual By Ben Maathuis and Martin Schouwenburg March 2013 En UNIVERSITY OF TWENTE ITC Colofon University of Twente Faculty of Geo Information Science and Earth Observation Department of Water Resources Department of Geo Information Processing Date last modified 20 March 2013 E mail corresponding author b h p maathuis utwente nl Postal address P O Box 217 7500 AE Enschede The Netherlands Website http www itc nl and http 52North org communities earth observation Published by University of Twente Faculty of Geo Information Science and Earth Observation Departments of Water Resources and Geo information Processing This work is licensed under the Creative Commons Attribution NonCommercial 3 0 Netherlands License To view a copy of this license visit http creativecommons org licenses by nc 3 0 nl or send a letter to Creative Commons 444 Castro Street Suite 900 Mountain View California 94041 USA Release notes Following comments have to be taken into consideration with respect to the release of this Time Series Data Conversion Utility 1 This is the fi
14. Number of frequencies 3 Unpacking prefix Indy Direction outliers High C Low List of data files C DataConversion NDV_HANTS ndy txt Browse FET 10 Fit Error Tolerance o Browse List of aux data files _Browse DOD 5 Degree of OverDeterminedness Number of images fio delta 0 1 Wian 1003 Scaling factor 1 Height 785 Data type Byte data 8 bits pixel HANTS User Interface DER HANTS User Interface DER Project Analysis Synthesis IHS Bat file Project Analysis Synthesis IHS Bat fie Help Fist sample Phase file DataConversion NDV_HANTS ndv_POOT_bin Browse Last sample 01 Phase offset deg 30 Interval mz Amplitude file DataConversion NDV_HANTS ndv_A001_bin Browse Maximum ampl 100 Mean file DataConversion NDV_HANTS ndv_A000_bin Browse Cut off 35 Saturation 190 28
15. TS Iles 2 TimeSat Back 2 ILWIS Input Maps sr yNDV_JLWISjey_ mask ng C Gdal Data location I 7 date Current first layer Gdal_translate location This location l feb2013 Thwis exe New Maplist name ndvi Start Date 1 1 2010 Y Resolution Dekade w DateFormat yyyymMtt vi prefix date format suffix Output Maplist template dvi Mt OR Example w C 10 After you have validated the results of the renaming operation open the Tab ILWIS 2 SPIRITS to export your map list to ENVI format so it can be used by SPIRITS Specify as input map list ndvi mpl and select as output directory C DataConversion ndv_spirits Note the other settings from figure 3 7 below After all parameters are specified press the option Export to ENVI and wait until the process has been completed Figure 3 7 Export ILWIS map list to ENVI format for use in SPIRITS EE Time Series Data Conversion and MapList Rename Utility Rename ILWIS Maplst ILWIS 2 SPIRIT ILWIS 2 HANTS Tis 2 TimeSat Back 2 RWIS SPOT Vegetation Tine series in dekad resolution from 20100101 20121011 Force datatype Byte 8 bit Special Values Cloud Background Snow Sea 2 Messing WORRRBBEE 100 Expat to em Chose j Use your Windows Explorer and navigate to the sub directory C DataConversion ndv_spirits Now open with Notepad the file ndvi_20100101_out hdr and inspect the content see also Appendix 3 Note that additional lines h
16. TimeSat processing routine The filtered NDV time series can subsequently be used as input into other time series analysis routines Close all open windows and applications 20 5 Time series data processing and data transformation from ILWIS to HANTS 5 1 Introduction This exercise will focus on the use of an NDVI time series data set derived from the SPOT Vegetation Instrument for the Burkina Faso region from 01 01 2010 up to 11 10 2012 The temporal resolution is 10 days resulting in 101 temporal events The data has already been imported in ILWIS If this is not the case start importing the data as described in chapter 3 2 Once more note that the data is having a byte format Install HANTS and double click with the mouse within the HANTS directory the file Hants chm showing the help Have a look at the various chapters within the help menu 5 2 Export of time series data from ILWIS to HANTS Open the application TimeSeriesConversion exe which is contained in the sub directory C DataConversion TSConvert by double clicking it with the mouse Open the Tab Configuration and first check if your GDAL and ILWIS configuration settings are correct if this is not the case consult chapter 3 4 Open the Tab wis 2 HANTS and specify the appropriate input maplist here ndv is used and select the output directory here C DataConversion NDV_HANTS is used see also figure 5 1 Note that here the Force da
17. ave been added to the original ENVI header file like date days flags program and comment The data format is 1 meaning byte SPIRITS supports data types 1 to 4 representing byte int16 int32 and float32 respectively Eventually open another header file and inspect the content 3 5 Create a Quick look in SPIRITS and export a Quick Look time series Open SPIRITS here version 1 1 1 from Febr 2013 is used and select from the main menu the option Analysis gt Maps gt Create Template From the Image Tab select as Image C DataConversion ndv_spirits ndvi_20100101_out img From the QuickLook menu select File gt Open and from the sub directory C DataConversion Ancillary and select the file ndv_template qnq Your results should resemble those as presented in figure 3 8 Select also the Tab View HDR and inspect the content Figure 3 8 Quicklook of ndvi_20100101_out img using the ndv_template qnq template Quick Look er Canvas Image Flags Colours Legend Vectors Pictures Texts Image IRITS ndvi_20100101_out img Bad 1 1 Left 10 Top 60 Width 360 Height 286 Background type Transparent Sold Colour scale Solid colour scale From J 0 0 Til 255 0 7 Border Coku B Width 12 Margin 10 Margin colour V marginTransparant 11 After inspection of this quick look open from the SPIRITS main menu the option Analysis gt Map gt Map series
18. boundaries the sub directory TSConvert is providing the software used to rename and convert data processed in ILWIS to be used in SPIRITS the sub directories NDV_SPIRITS NDV_ILWIS and Quicklooks are used to store the processed data The sub directory NDV_SPIRITS is currently empty the sub directory Quicklooks should contain a sample power point _ presentation Sample_presentation pptx having one slide and the sub directory NDV_ILWIS contains a country boundary file A 1_ country Ensure that all files are available and that you have sufficient storage capacity on your C drive as you are going to process time series data 3 2 VGTExtract Start VGTExtract and define your input and output directory as specified in figure 3 1 Under Processing settings press New as Name enter Burkina_Faso as Output Filename specify p y m d only product name followed by year_month_day as preset ROI select Burkina Faso As output directory specify C DataConversion ndv_ilwis see figure 3 2 left Open the Tab Output and as Output Format select ILWIS and as Data Type Unsigned Byte see figure 3 2 right Now activate the option Use Product Specific settings at the lower left hand corner Open the Tab Product Specific unselect the option ncluded for the Vegetation layer see figure 2 3 top and open the layer by pressi
19. e aren nhl a nn 1 101 2 DataConversion NDV_TIMESAT ndv_20100101 img DataConversion NDV_TIMESAT ndv_20100111 img DataConversion NDV_TIMESAT ndv_20100121 img DataConversion NDV_TIMESAT ndv_20100201 img DataConversion NDV_TIMESAT ndv_20100211 img DataConversion NDV_TIMESAT ndv_20100221 img DataConversion NDV_TIMESAT ndv_20100301 img DataConversion NDV_TIMESAT ndv_20100311 img DataConversion NDV_TIMESAT ndv_20100321 img DataConversion NDV_TIMESAT ndv_20100401 img DataConversion NDV_TIMESAT ndv_20100411 img DataConversion NDV_TIMESAT ndv_20100421 img DataConversion NDV_TIMESAT nda v_20100S01 img DataConversion NDV_TIMESAT ndv_20100511 img DataConversion NDV_TIMESAT ndv_20100521 img DataConversion NDV_TIMESAT ndv_20100601 img DataConversion NDV_TIMESAT ndv_20100611 img DataConversion NDV_TIMESAT ndv_20100621 img Dataconversion NDV_TIMESAT ndv_20100701 img DataConversion NDV TIMESAT ndv 20100711 img a Output folder C DataConversion NDY_TIMESAT Force data type Byte unsigned 6 bk aeogoaggqagngagaggagfgagagaagagaaaa Close Notepad and delete from your working directory also the imported img files from 20120101 up to 20121011 Open TimeSat specify your TimeSat Installation Folder and press OK From the TimeSat Menu System select the option Display Binary Images 7TSM_ImageView In the TSM_imageview select from the menu the options File gt Open file list press the button
20. e is made of various utilities e ILWIS inspection of the imported data using animations and eventual additional processing e ILWIS2TIMESAT file renaming and export to TIMESAT e TIMESAT Temporal filtering and generation of new filtered output time series data e ILWIS create graphs of original and processed filtered time series All software utilities used are at your disposal downloaded from the URL s provided in appendix 1 and various documents are describing how to install the software tools It is assumed that all tools are at your disposal and that you have created the sub directory structure as indicated in chapter 2 4 2 NDV Data transform from ILWIS to TIMESAT Open ILWIS and navigate to the directory c DataConversion NDV_ILWIS Once more display the time series ndv which was created in chapter 3 3 see also figure 3 4 This is the original data imported from the SPOT Vegetation instrument using VGTExtract If you start the exercise from here conduct the import as described in the previous chapter see chapter 3 2 and 3 3 Once more note the import settings as specified in figure 3 2 and 3 3 unsigned byte Open the application TimeSeriesConversion exe which is contained in the sub directory C DataConversion TSConvert by double clicking it with the mouse Open the Tab Configuration and first check if your GDAL and ILWIS configuration settings are correct if this is not the case consult chapter 3 4
21. ed under No of images year as No of rows in image specify 785 and as No of columns per row specify 1009 Press the button Show image From the new Figure window activate the lower left button Processing window and select the following window Col 264 306 and Row 310 354 and press the option Return Note that these values are now added to the image files input window eventually change the indicated values to the values provided above manually and press the option Load data The NDVI curve for row column 310 264 is now given in the GUI Select from the options available under Data Plotting the Savitsky Golay option see also figure 4 3 check if all other parameters are set identical to figure 3 4 as well Take specific note of the effect of No of envelope iterations here a value of 2 is applied note the change of the peak of the NDVI if other envelope settings are used Use also the option Plot next series to see the effect of the curve fitting over the next pixel Figure 4 3 TSM_GUI showing NDVI over Burkina Faso for 2010 and 2011 for row column 310 264 TSM_GUI DER File Settings Output Help 2 amp 2 TIMESAT Graphical User Interface Row 310 Column 264 180 Data plotting C Points o C Weights C Gaussian C Logistic V Savitsky Golay C Season start stop C Coarse seasonality Piot next series
22. ees A the amplitude and M is the mean signal The mean is scaled by means of a cut off minimum C and a saturation value maximum S The amplitude is scaled between zero and a maximum value Ama When the phase passes through the complete range from zero to 360 degrees the colours go through the sequence blue cyan green yellow red magenta blue similar to a rainbow When the amplitude is small the colour components are almost equal so the result will be a black and white image that is mainly controlled by the mean signal Figure 5 3 Time series transformed into IHS components a hants_ihs Maplist hants_ihs imported from C DataConversion NDV_HANTS ndv_process_ihs ILWIS DER File Edit Layers Options Help DOO k V amp A kk BS 5897804 x i f i MB c dataconversio Properties i hants_ihs Mapli Properties 490 679 11 38 15 8 N 0 02 59 25 E 11 38 15 75 N 0 02 S9 25 E This resulting image can be used for further classification purposes to derive an appropriate crop mask note that you have compressed your time series data from 101 temporal intervals to three components 23 Appendix 1 Internet Sources of Open Source Software Tools used and time series data From following internet addresses the tools used and additional documentation can be retrieved Time Series Conversion Tool http 52north org communities earth observation ILWIS http 52north org communities ilwis VGTExtract https rs vito be africa e
23. eries data analysis tools like HANTS SPIRITS and TIMESAT The URL s of these tools are provided in appendix 1 The output result of the analysis in these packages can then be transformed back into an ILWIS format for ingestion into other processing or visualization routines Figure 1 1 Time Series Data Conversion tool E Time Series Data Conversion and MapList Rename Utility Configuration Rename ILWIS Maplist ILWIS2SPIRIT ILWISZ2HANTS Ilwis2TimeSat Back2ILWIS Gdal translate location FivTools247 bin gdal_translate exe Gdal Data location C FWTools247 data Ilwis location ts fIlwis 372_Ffeb20 1 3iThwis Xe This document is describing how time series data for access to free and online time series data see also appendix 1 can be imported into ILWIS how additional pre processing can be performed using time series data the time series can be renamed and exported to other applications and transformed back to ILWIS For this description use is made of ILWIS version 372 2 Download and Installation of the tools and exercise data The time series data conversion software tool can be downloaded from the Earth Observation Community Web page see appendix 1 for the URL For the purpose of the exercises described here additional vector data and templates contained in the file Ancillary zip has to be retrieved and can be downloaded from ftp ftp itc nl pub 52n TSdata_conversion The exercise description is using the foll
24. ese data translation libraries under the Tab IConfiguration the gdal_translate exe has to be selected as well as the location of the GDAL Data library Also your ILWIS exe has to be specified If not already installed download and install GDAL FWTools select FWTools247 exe and conduct the installation As output directory specify c fwtools247 all other settings can be kept default In the Time Series DataConversion application open the Tab Configuration and specify the settings as given in figure 3 6 left for your Gdal and ILWIS locations After this has been done open the Tab Rename ILWIS Maplist use as input map list ndv_mask and specify the settings as given in figure 3 6 right subsequently press Start Renaming Please wait a minute or so for the operation to complete Open ILWIS and refresh the catalog from the menu select Window gt Refresh and display the renamed map list now called ndvi as an animated sequence Note also the names of the individual layers and the new date format assigned Figure 3 6 Using Ilwis2Spirits to set GDAL configuration and conduct map list renaming Time Series Data Conversion and MapList Rename Utility EC fei E Time Series Data Conversion and MapList Rename Utility Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HANTS Inis 2 TimeSat Back 2 ILWIS Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HAN
25. g Windows Explorer eventually double click on the executable Open the sample power point presentation Sample_Presentation pptx and Show the presentation Click on the image and select OK to view the animation in Power Point 3 7 Data transformation from SPIRITS to ILWIS Data processed by SPIRITS can be transformed back into ILWIS format this option is not described here but is considered straight forward Browse to the relevant directory here the sub directory NDV_SPIRITS select all header labeled ENVI format files enter hdr as file name keep the shift key pressed and select the first and last map of the time series to select all layers and select Open Specify an output directory here the sub directory Back2 LWI S and press the button Export 2 Ilwis and wait till the export process has completed see also figure 3 12 Figure 3 12 Export time series back into ILWIS format E Time Series Data Conversion and MapList Rename Utility Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HANTS Ilwis 2 TimeSat Back 2 ILWIS Envi files Output C DataConversion Back2ILWIS Required for TimeSat and HANTS ILWIS Georef Data type Byte unsigned 8 bit COCs After the time series has been transformed into ILWIS format a new map list has to be created and the time series can be visualized as an animated sequence The procedure how to create a new map list is described in this d
26. le View Zenith Angle Missing D Data Type O Unsigned Byte 32768 Signed Short 32768 Signed Short 32768 Signed Short 32768 Signed Short 4 m oololdodlisiclioiclalm s m m t Note the progress bar during import and the various layers are now added under the Output Directory specified and if the import is correct the indicator in front of the filename will blink green for each layer time event imported Inspect using Windows Explorer the output directory storing the newly imported data 3 3 ILWIS for time series data visual inspection Open ILWIS and use the Navigator to move to your working directory here C DataConversion ndv_ilwis is assumed From the main ILWIS menu select the option File gt Create gt Map List As Map List name specify ndv select all layers 101 in total from the left hand window and by pressing the gt button the layers are added to the Create MapList right hand window see figure 3 4 and press OK Figure 3 4 Creating a new map list in ILWIS Create MapList Map List Double click with the mouse on the newly created map list ndv subsequently in the MapList window select as display option Open as SlideShow as Representation select Pseudo and press OK twice add the file Al1_co
27. mp 2 3 amp amp w D ac da a 2 Bal 1AE SORE sever description C DataConversion NDV_SPIRITS ndvi_20100101 out img samples 1009 lines 785 bands 1 header offset 0 values NDVI 1 255 1 255 0 1 flags 254 sea file type ENVI Standard data type 1 interleave bsq byte order 0 map info Geographic Lat Lon 1 1 6 004464 16 004464 0 00892857086223984 0 00892857070063 694 UGS 84 band names Band 1 comment Time series in dekad resolution from 20100101 20121011 sensor type SPOT Vegetation date 20100101 days 10 program TimeseriesConversion exe v 1 0 1 2 3 4 5 6 7 8 9 pi pa pi cpa ee p pi O Jand WON FS OC 26 Appendix 4 TimeSat Input Settings Tool settings for Burkina Faso TIMESAT input settings tool 27 Appendix 5 HANTS settings for IHS processing The following screen dumps show the settings applied to transform the NDVI time series into Intensity Hue Saturation composite For the purpose of the exercise configure the Project Analysis Synthesis and IHS Tabs as indicated HANTS User Interface DER amp HANTS User Interface mE Project Analysis Synthesis IHS Bate Project Analysis Synthesis IHS Bat file Input directory C DataConversion NDV_HANTS Browse Analysis method FFT HANTS Output directory C DataConversion NDV_HANTS Browse yen ome fom i 255 Base periodO Project name Indv process
28. n software Pages vgtextract aspx SPIRITS https rs vito be africa en software Pages Spirits aspx HANTS http gdsc nir ni gdsc en tools hants TIMESAT http www nateko lu se timesat timesat as IRFANVIEW http www irfanview com FWTools GDAL http fwtools maptools org Exercise templates and vector data used can be retrieved from ftp ftp itc nl pub 52n TSdata conversion Online access to free online time series data Time series data based on SPOT VEGETATION METOP AVHRR MSG SEVERI and ENVISAT MERIS can be retrieved from https rs vito be africa en data Pages data aspx For access to a multitude of other free time series data have a look at http 52north org communities earth observation about isod toolbox 24 Appendix 2 Date stamp renaming formats supported The figure below shows the types of Date Format supported for file renaming MS Dialog N DateFormat Minimal Period Explanation of terms S O 1 YYYMMDD Day 1950 gt 2049 z mmo aaa Jan 1 4 0e8c a permo Da n a WDD Pekad in year 01 36 5 pem Dekad bay in Month 01 31 6 ee Dekad per month 01 11 21 ZOO eME Dekad per month 1 3 A r g pmm Month o m 25 Appendix 3 Sample Header file listing Header file listing of the file ndvi_20100101 out hdr is show in the figure below C DataConversion NDV_SPIRITS ndvi_20100101_out hdr Notepad File Edit Search View Encoding Language Settings Macro Run Plugins Window oak a
29. ng the Layer Expand Option in front of Vegetation and only activate the layer Basic 10day Normalized Difference Vegetation Index see figure 3 3 bottom Press OK to store the 7 settings and you will return the start screen of VGTExtract as of figure 3 1 Press the Start button to transform the data into ILWIS format Ensure that the input data directory is activated blue as of figure3 1 Figure 3 1 Opening screen of VGTExtract showing directory settings SU VGT Extract Version 2 1 0 DER rocessing Settings Burkina_Faso Input DataConversion BE Ancillary 2 Back2ILwis gt OMME H O 2KRNS10__20100101_NOVI 2KRNS10__20100111_NDVI_ 2KRNS510__20100121_NDVI 2KRNS10__20100201_NDVI_ 2KRNS10__20100211_NDVI 2KRNS10__20100221_NOVI Y2KRNS10__20100301_NDVI_ v Figure 3 3 Product Specific Settings to extract NDVI layer only wl Settings Name Burkina Faso e ROT Output Product Specific Settings Included Missing D Data Type S O Burkina Faso M O Unsigned Byte E O Vegetation go E Settings Name Burkina_Faso Output Filename p_ oy om od ROI Output Product Specific Settings S O Burkina_Faso Vegetation Blue reflectance Red reflectance Near Infrared reflectance Short wave Infrared reflectance Basic 10day Normalized Difference Vegetation Index Status Map for 10 day NDVI and NOWI Solar Azimuth Angle Solar Zenith Angle View Azimuth Ang
30. ngs from the menu select File and Open settings File specify the file tsm_filter_final set now available from your working directory and check if the settings are identical to Appendix 4 If this is the case then close the TimeSat input settings tool else modify them accordingly and save the file Take special note of the setting for the Output data especially the option 1 fitted data Continue with the next option from the TimeSat Menu System select the option Process images or ASCII data TSF_jrocess specify the file tsm_filter_final set Now 72 new image files are being created and the filter 17 function selected is applied for each row in this case 785 rows to create the new filter definitions Note that this process can take quite some time use this time to read the documentation to assess what is done by the TimeSat application Note that the progress can be followed by the row number displayed within the DOS box see also figure 4 4 When the application has finished 2 new files have been created these files are tsm_filter_settings fit ndx and tsm_filter_settings _fit tts Figure 4 4 DOS progress window for TimeSat c TIMESAT Fortran command window ojx ROW 764 ROW 765 yk al Continue with the option Create images from function file tts file and press the button TSF_fit2img from the main TimeSat Menu System Select as input file tsm_filte
31. ocument see chapter 3 3 Navigate in ILWIS to the sub directory Back2 LWIS from the main menu 13 select the option File gt Create and create a new maplist as name specify from_spirits and add all map to the new maplist Display this maplist as an animated sequence using as Representation Pseudo Having an efficient data transformation tool best of both applications are now at your disposal and can be effectively used so you are able to spend most of your time on data analysis and not on data pre processing which can be quite cumbersome for larger time series 14 4 Time series data processing and data transformation from ILWIS to TIMESAT 4 1 Introduction This exercise will focus on the use of the same NDVI time series data set derived from the SPOT Vegetation Instrument for the Burkina Faso region but now only from 01 01 2010 up to 21 12 2011 2 years The temporal resolution is 10 days resulting in 101 temporal events spatial resolution is approximately 1 km and the data has geographic coordinates The number of rows lines is 785 and the number of columns pixels is 1009 Here attention is mainly on data transformation eventual processing in TIMESAT and subsequent data transformation of the filtered data back into ILWIS Details of the temporal filtering in TIMESAT are not described here but further information can be obtained from the online documentation In order to process the data us
32. owing assumptions with respect to your working directory e Create on the root of your C drive a directory DataConversion e Create within this main directory the following sub directories o Ancillary used to store the content of the Zip file Ancillary o Burkina S1ONDV used to store the content of the SPOT Vegetation data o TSConvert used to store the time series conversion software tool o NDV_ILWIS used to store the ILWIS NDV time series o NDV_SPIRITS used to store the SPIRITS NDV time series o NDV_Quicklook used to store the SPIRITS NDV quicklook time series o NDV_HANTS used to store the HANTS NDV time series o NDV_TIMESAT used to store the TIMESAT NDV time series o Back2ILWIS used to store the data transformed back into ILWIS format After this sub directory structure has been created on your local system download the file Ancillary zip from the ftp address indicated above and store the unzipped content in the sub directory Ancillary From this sub directory Ancillary copy the content of the folder 2NDV_ILWIS into the sub directory NDV_ILWIS and copy the content of the folder 2NDV_Quicklook to the sub directory NDV_Quicklook Retrieve the time series data conversion tool from the EO Community Web page and extract it into the sub directory TSConvert Eventually create a shortcut from the file TimeseriesConversion exe to your desktop Retrieve the SPOT VGT
33. r_settings_fit tts and press the Open button Specify the following options Code to missing pixels as 255 Name of output files no extension as ndv_filtered Specify the file type for the output image files 1 2 or 3 as 1 and for Number of years 1 to select both years Wait until the routine has completed writing the output images Use Windows Explorer navigate to your working directory and check the new images created ndv_ filtered 0001 ndv_filtered 0072 Through this routine the new images are being written and these can subsequently be transformed back into ILWIS Close all open TimeSat windows Copy now all ndv_filtered_00 files from 0001 0072 and paste these into the directory C DataConversion Back2ILWIS 4 4 Data transformation from TIMESAT to ILWIS Open once more the Time Series Conversion tools and select the Tab Back 2 ILWIS as input envi files navigate to your working directory here C DataConversion Back2ILWIS and first type a ndv_ in the file name selection box press lt enter gt then select all the ndv_filtered files from 0001 0072 created by TimeSat and press Open As output specify C DataConversion Back2 LWIS To convert the TimeSat data also an ILWIS georeference is needed for number of rows columns projection info etc which is also expected in the output directory First use Windows Explorer and copy from the director
34. rst release of the Time Series Data Conversion tool and utmost care was taken to ensure appropriate operation of the routines developed but at this stage some new functionality might still result in defects and these should be reported to the corresponding author to be addressed in a new release 2 No liability can be accepted for use of the Time Series Data Conversion tool by the developers the software tool has been coded by Martin Schouwenburg email m I schouwenburg utwente nl For any remarks with respect to this utility you can contact him using the email address provided Some more attention has to be given to the various data types scaling and offset values which are used for the original VGT products or manipulated products from ILWIS For this description a byte format is used without scaling and offset applied Mostly when using ILWIS output a scaling of 1 and offset of 0 can be applied to use the same values in SPIRITS This is not applicable when using HANTS or TIMESAT 3 When using this tool you agree and comply with the conditions of the software utilities used as well as the terms and conditions stipulated by other software and data providers for the use or references to the source of the data Contents 1 Overview to the time series data Conversion tool developed cccceseccccesseeceeeeseeceeeaeeeesaeees 5 2 Download and Installation of the tools and exercise data ccccsssssscecceecceceesenssseeseeceeeeeeeanas
35. s the data use is made of various utilities see also Appendix 1 e VGTExtract import of the data and transformation of the data into an ILWIS format e ILWIS inspection of the imported data using animations and eventual additional processing e Time Series Data Conversion Tool file renaming and export to SPIRITS e SPIRITS generation of Quick Looks e IRFANVIEW create animation of processed time series Quick Looks e Microsoft Power Point use template to visualize time series created All software utilities used can be downloaded from the internet see also Appendix 1 and various documents are available from these sources describing how to install the software tools It is assumed that Microsoft Office is at your disposal Templates are available to visualize Quick Looks in SPIRITS and export the Quick Looks Before you start check the content of the directory C DataConversion and verify if all sub directories are created as specified in the previous chapter Please adhere to these conventions as some SPIRITS templates are going to be used which expect these settings The exercise will follow the same sequence as the listing of tools used provided above Before you start the exercise first inspect the directory C DataConversion The sub directory Burkina_s1ONDVI should provide the SPOT Vegetation data of Burkina Faso the sub directory Ancillary is providing SPIRITS templates and a shape file with country
36. subsequently in the MapList window select as display option Open as SlideShow as Representation select Pseudo and press OK twice add the file Al1_country no Info boundaries only available from the sub directory ndv_ilwis and using the mouse with the left button pressed inspect the map values Note that higher values are red green depicts the intermediate values and blue is marking the lower values The values are represented in a byte range from 0 255 and 255 has been assigned a missing pixel value by TimeSat Close the animation window when finished To complete the process once more use the option Rename ILWIS Maplist Specify the settings as given in figure 4 6 and press Start renaming Refresh your ILWIS catalog and check the content of the maplist Figure 4 6 Maplist rename E Time Series Data Conversion and MapList Rename Utility Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HANTS Ilwis 2 TimeSat Back2 ILWIS Input Maplist Z DataConversion Back2ILWIS ndv_F ndy_filtered_0001 mpr Current first layer New Maplist name ndv_filtered Start Date 1 1 2010 Y Resolution Dekade vy DateFormat yyyyMMtt TEA prefix date format suffix Output Maplist template dv_filtered YMMI Example nd fitered_20100101 MUNNER o 19 Once more open the first layer of the MapList ndv_filtered the map layer ndv_filtered_20100101 use as
37. ta type option is used This is done as the data format byte is known To export the data press the button Export to Hants Figure 5 1 Export of NDVI time series to HANTS and ascii file list created E Time Series Data Conversion and MapList Rename Utility DER DataConversi on NDV_HANTS NDV_20100101 img DataConversi on NOV_HANTS NDV_20100111 img DataConversi on NDV_HANTS NDV_20100121 img DataConversi on NDV_HANTS NDV_20100201 img DataConversi on NDV_HANTS NDV_20100211 img DataConversi on NDV_HANTS NDV_20100221 img DataConversi on NDV_HANTS NDV_20100301 img DataConversi on NDV_HANTS NDV_20100311 img DataConversi on NDV_HANTS NDV_20100321 img DataConversi on NDV_HANTS NDV_20100401 i DataConversi on NOV_HANTS NOV_20100411 i Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HANTS Ilwis 2 TirneSat Back 2 ILWIS Input Maplist Output folder DataConversion NC Force datatype Byte 8 bit DataConversi on NOV_HANTS NDV_20100421 3 DataConversi on NDV_HANTS NDV_20100501 i DataConversi on NDOV_HANTS NDV_20100511 3 DataConversion NDV_HANTS NDV_20100521 i DataConversi on NDV_HANTS NDV_20100601 i DataConversi on NDV_HANTS NDV_20100611 i DataConversion NDV_HANTS NDV_20100621 i DataConversion NDV_HANTS NDV_20100701 img DataConversi on NDV_HANTS NDV_20100711 img DataConversi on NDOV_HANTS NDV_20100721 img DataConvers i on NOV_HANTS NDV_201008
38. ter gt to execute the command Right click with the mouse on the newly created maplist icon hants_ihs and select from the context sensitive menu the option Properties and as Georeference select from the sub directory NDV_ILWIS NDV_20100101 and accept the changes by pressing OK Now display the composite double click on the maplist hants_ihs and select the option Open as Color Composite and for the red channel select hants_ihs1 green as hants_ihs2 and blue as hants_ihs3 and press OK to see the resulting image Add the country boundary from the sub directory NDV_ILWIS unselect the option nfo and only display the boundaries using as colour White Your results should resemble those presented in figure 5 3 For display of phase information the IHS Intensity Hue Saturation transform is particularly useful as phase can be connected to colour hue which is a much more natural choice that connecting it to a scale of grey levels from black to white Besides the coupling of phase to colour hue it is possible to couple the amplitude of the same frequency to colour saturation and the mean signal to the intensity For this the following set of formulas is applied as given by the set of equations below source from HANTS help pastel ir Z_ CP 240 x 127 S c ayia x 127 s c 2 x127 22 Here r g and b are the colour signals in red green and blue P is the phase in degr
39. tiory Show Detine Cancel More important note the naming convention of your map layers these are now numbered from ndv_mask_1 up to ndv_mask_101 due to the operation you have lost the relation with the initial filenames and the date stamp 3 4 Map List rename and export to SPIRITS As SPIRITS requires appropriate accounting of the temporal resolution the obtained map list cannot be exported to SPIRITS at this moment Open the application TimeSeriesConversion exe which is contained in the sub directory C DataConversion TSConvert by double clicking it with the mouse This stand alone application is developed to easily transform data from ILWIS to from SPIRITS and is performing a number of Operations e Rename ILWIS Maplist using various date formats check the button for the date formats supported See also Appendix 2 for the date format template e Transform from ILWIS format to SPIRITS for data types in byte int16 int32 and float32 data scaling and offset can be included and flags can be specified Note that float 64 formatted data is exported as float 32 During export the new header files are adapted and also the essential days and date field are included based on selected date format settings e Export from SPIRITS to ILWIS Back 2 ILWIS e g for quick visualization animation and inspection of the data values The utility is using GDAL for data transformation As both ILWIS and SPIRITS use th
40. untry no Info boundaries only and using the mouse with the left button pressed inspect the map values Note that higher values are red green depicts the intermediate values and blue is marking the lower values The values are represented in a byte range from 0 255 Check the value of the water bodies Close the animation window when finished To conduct computations in ILWIS on a map list select from the main ILWIS menu the option Operations gt Raster Operations gt Map List Calculation Now as an example you are going to create a mask for the open water bodies which in your imported data have a value of 1 and are going to be reassigned to a value 254 This is just a reclassification example to demonstrate what is happening in ILWIS when these type of map list calculation operations are applied note that other computations can be performed in an identical manner Enter the following formula in the expression window iff 1 1 254 1 see also figure 3 5 Note that 1 stand for the input map list enter other parameters as specified in figure 3 5 below and press Show to execute the computation A new map list is created for all layers Display this new map list and note the occurrence of the value 254 Figure 3 5 Map List Calculation window ge MapList Calculation Expression H 1 1 254 1 Start Band 1 EndBand io InputMaplists 1 Maplist 1 E nd sj Opt Mop Desctip
41. urce Software Tools used and time series data 24 Appendix 2 Date stamp renaming formats supported ccsccccessssececeesececeeeceeceeeseceeseeeseeesueneces 25 Appendix 3 Sample Header file listing cccccecccccssscecceensecceceeseececeeseceeseeuseeeseeesceeseegeceetsugeeeesauens 26 Appendix 4 TimeSat Input Settings Tool settings for Burkina Faso cccccccesscecceeeseceeceeeseeeeeeneees 27 Appendix 5 HANTS settings for IHS ProceSSing ccccccssscccecssscecceesecceeeeseceeseussececauaeeeseeenseeeseeaseees 28 1 Overview to the time series data conversion tool developed It was noted over and over again that a lot of time is actually spend on preparation of time series data Once the time series is constructed multiple freeware tools are available to allow further processing of the data Conversion between the packages is again a tedious process and consuming a lot of time In order to efficiently transformation the data from one application to another and make full use of the capabilities offered by various packages this tool has been developed Figure 1 1 is showing a screenshot of the transformation utility The tool is based on the data translation library offered by GDAL It facilitates renaming of a map list which has been constructed in ILWIS by adding temporal information to the name of the layers within a time series After completion of this process the data can be exported to other free time s
42. y C DataConversion NDV_ILWIS the files NDV_20100101 grf and NDV_20100101 csy and paste them in the current working directory C DataConversion Back2 LWIS Specify your settings as indicated in figure 4 5 and press the option Export 2 ILWIS Wait some time for the conversion operation to complete Open ILWIS and navigate to your active working directory here C DataConversion NDV_ Back2ILWIS and create a new maplist of the filtered files From the main ILWIS menu select the option File gt Create gt Map List As Map List name specify ndv_filtered select all layers 72 in total from the left hand window and by pressing the gt button the layers are added to the 18 Create MapList right hand window and press OK Right click with the mouse on the newly created maplist icon select the option Properties if the georeference is NDV_20100101 and press Ok Figure 4 5 Transform from TimeSat back to ILWIS E Time Series Data Conversion and MapList Rename Utility Configuration Rename ILWIS Maplist ILWIS 2 SPIRIT ILWIS 2 HANTS Ilwis 2 TimeSat Back 2 ILWIS Envi files C DataConversion Back2ILWISjndy_filtered_ 0072 Output C DataConversion Back2ILWIS Required for TimeSat and HANTS ILWIS Georef lt DataConversion Back2ILWIS NOV_20100 Data type Byte unsigned 8 bit CUCL Double click with the mouse on the newly created map list ndv_filtered
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