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by avmehta
Mon Apr 27, 2020 4:04 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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...
by avmehta
Mon Apr 27, 2020 12:18 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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
by avmehta
Mon Apr 27, 2020 12:13 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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
by avmehta
Sun Apr 26, 2020 10:23 am America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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...
by avmehta
Thu Apr 23, 2020 5:33 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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
by avmehta
Thu Apr 23, 2020 3:05 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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...
by avmehta
Thu Apr 23, 2020 12:03 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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...
by avmehta
Thu Apr 23, 2020 1:00 am America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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]...
by avmehta
Mon Apr 20, 2020 12:33 am America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

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
by avmehta
Sun Apr 19, 2020 6:26 pm America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

Hello,  Ah yes! I closed the file and now I can open it! Thanks so much for your help. I truly appreciate it.  I have a question for l2gen  processing (on Linux using command line). I have a series of OLI, MSI, OLCHI L1 images that I am trying to convert to L2 using l2gen. These data ...