[Tcl-nap-users] write hdf

[salah j. <s_...@ya...>]

Hi guys
   
  I have posted a message with the same subject and i want to explain exactly what i am doing.
   
  I did the test below which reads the data from one HDF image file and write it to another HDF image file. a new  image is generated just only one difference the 3-dimensional Scientific Dataset have a general attribute which is Fillvalue. 
   
  i am using another library which is gdal also i am using mapserver to display the images using the web. the gdal library compiled to support HDF files, the library that i used to do that is HDF41r5.
   
  i was able to see the origenal image which is "green band" at the same time i was not able to display the test images. 
   
  as i said in the previous post that the fillvalue is the reason, so i need to away to deal with this issue .
   
  is  HDF41r5 is the reason  ..., or can i omit this tag or not even write it at the first place.
   
  set green [nap_get hdf green.hdf "3-dimensional Scientific Dataset"]
set TM [nap_get hdf green.hdf :TransformationMatrix]
set PR [nap_get hdf green.hdf :Projection]
set AP [nap_get hdf green.hdf :AREA_OR_POINT]
set TIFFS [nap_get hdf green.hdf :TIFFTAG_SOFTWARE]
set TIFFX [nap_get hdf green.hdf :TIFFTAG_XRESOLUTION]
set TIFFY [nap_get hdf green.hdf :TIFFTAG_YRESOLUTION]
set TIFFU [nap_get hdf green.hdf :TIFFTAG_RESOLUTIONUNIT]
  
$green hdf test.hdf "3-dimensional Scientific Dataset"
$TM hdf test.hdf ":TransformationMatrix"
$PR hdf test.hdf ":Projection"
$AP hdf test.hdf ":AREA_OR_POINT"
$TIFFS hdf test.hdf ":TIFFTAG_SOFTWARE"
$TIFFX hdf test.hdf ":TIFFTAG_XRESOLUTION"
$TIFFY hdf test.hdf ":TIFFTAG_YRESOLUTION"
$TIFFU hdf test.hdf ":TIFFTAG_RESOLUTIONUNIT"
   
   

		
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