Search found 165 matches

by avmehta
Wed Feb 17, 2021 9:39 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 7

gpt MosaicGeneral

Thank you so much.
Amita
by avmehta
Wed Feb 17, 2021 12:45 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 7

gpt MosaicGeneral

Hello,  Could you please  explain the following segment in the xml file from https://seadas.gsfc.nasa.gov/help/GptCookbook/gptCookbookMosaic.html    <conditions>            <condition>                <name>cond...
by avmehta
Tue Feb 16, 2021 2:23 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

I am not using GUI -- in GUI I see NaNs!
In the Parameter file is there way to fix this?
Thanks for your help.
Amita
by avmehta
Mon Feb 15, 2021 10:04 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

Thanks. Here is a portion of what I get after I use gpt to mosaic files:metadata:Processing_Graph:node_0:parameters:orthorectify = "false" ;                metadata:Processing_Graph:node_0:parameters:combine = "OR" ;      ...
by avmehta
Sat Feb 13, 2021 1:23 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

I just look at ncdump of the L2 nc file.
Thanks.
Amita
by avmehta
Fri Feb 12, 2021 12:30 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

In the GUI I can see NaN where there is no data (Rhos =0  there show up as NaN) it is the NetCDF file that they stay 0s and no appear as NaN. I tried a number (-9999) instead of NaN but that does not work either!
Thanks much for your help.
Amita
by avmehta
Fri Feb 12, 2021 9:44 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

Hello George,  Thank you for the explanation. What I want to do is exclude land and cloud pixels from mosaic/composite and then set rhos to NaN or some missing value number if the value is 0. My par file looks like this:band1=rhos_412band1Expression=if (rhos_412 != 0) then rhos_412 else NaNqual...
by avmehta
Thu Feb 11, 2021 2:46 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

Hello,  I am doing mosaic of a few mages and want to set certain value to NaN  I followed this statement in .par file:  band1Expression=if (Kd_490 != 0) then 1.3/Kd_490 else NaN   and have a statement that looks like:   band1Expression=if (rhos_443 != 0) then rhos_...
by avmehta
Tue Feb 09, 2021 8:43 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

Hello,     I am trying one flag at a time, in addition to LAND,  to see the impact. I tried qualityExpression=!l2_flags.LAND and  !l2_flags.CLDICE -- but I still see data when clouds are present. Should it be 'or' so that either land or cloudy pixel will be excluded?...
by avmehta
Mon Feb 08, 2021 6:52 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

Thank you.
Amita