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Great! Thanks for clarifying this, Sean.
Amita

Thanks Danny. I am running the GUI and gpt on two different computers. I am note sure that only rasters reprojected are the ones you view! I open an L2 file (.nc) in GUI created by l2gen on my Linux machine via a batch job, just select the file and choose raster-->reproject! There is an option to sa...

Hello,
Thanks for the information.  I would  run l2gen with these options.
  I just want to make sure that I can then repoeject the cropped L2 data. I seem to remember from some comment in the forum that entire image tile is required  for reprojection.
Amita

Thanks a lot for the explanation. I am still wondering why the gpt reprojection would take such a long time compared to the GUI processing! Do you know if that is a common experience? May be GUI uses different defaults ?
Thanks again.
Amita

Hello,  I was able to run gpt.sh by increasing java memory! Thanks.  For reprojecting OLI L2 file I used the following par file --  same as given in  the cookbook, but changed the resolution to be 30m (in degree).     pixelSize=0.000274658      resam...

Oh - I remember now that I had similar  issue on my GUI when reprojecting and had to change the memory. I have increased the memory in both seadas.vmoptions and in gpt.sh -- the program now seems to be running!
Thank you so very much.
Amita

Hi,  The Linux server I use a 64-bit machine. I installed java for 64-bit (previously I  installed was for 32-bit).  Here is what I get for my java version:java -versionjava version "1.8.0_251"Java(TM) SE Runtime Environment (build 1.8.0_251-b08)Java HotSpot(TM) 64-Bit Serve...

Hello, Thanks for the detail information. I use GUI on my Mac and trying run this command-line version on my Linux server which has Java version 1.7.I installed jre1.8 on my server and changed the path in gpt.sh ($app_java_home/bin/java). Now it does have access to v1.8 and the program ran but it lo...

Hello,   I am trying to use gpt.sh for re-projection. It uses ReprojectGeoLatLon.xml.  Here are some lines from the sample fileI found from GptCookbook . For the spheroid, 637837.0 is earth's radius but not sure what 298.0 is. Also, in UNIT["degree",0.017453292519943295]...

Thanks. I will try this. I was hopping that I can crop L1 image! That way I can save some time in converting to L2. But I also see from some of the earlier comments in the Forum that for reprojection of L2, entire image has to be there and can't be cropped! Is that right?
Thanks again.
Amita