Search found 177 matches

by avmehta
Mon Apr 27, 2020 12:13 pm America/New_York
Forum: 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: 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: 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: 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: 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: 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: 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: 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 ...
by avmehta
Sat Apr 18, 2020 7:18 pm America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

Hello,  I generated OLI, MSI, and OLCI L2 products using l2gen on my linux machine and saved output files in NetCDF formate. Then I reprojected these files using SeaDAS GUI. I chose WGS84 projection and nc as the output data format. I got reprojected nc files but when I try to get ncdump, I get...
by avmehta
Fri Apr 17, 2020 2:34 pm America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

Thank you for the suggestion, Sean. I will look into that. So when I use 'reproject' from the GUI, does it do any resampling or binning? How to decide that factor?
I am grateful to all of you from this forum for patently helping with these questions.
Amita