Search found 22 matches

by jvaldezch
Thu Aug 08, 2019 5:44 pm America/New_York
Forum: Home
Question: Unable to download ancillary data
Replies: 2

Unable to download ancillary data

Thanks Sean, I will send the information as described on the post.
by jvaldezch
Thu Aug 08, 2019 12:12 pm America/New_York
Forum: Home
Question: Unable to download ancillary data
Replies: 2

Unable to download ancillary data

Hi, I'm downloading data from your servers in order to produce daily compositions but today I found that my IP seems to be blocked. Do I have to use bandwidth limitation? Or what are the good practices?

I can access https://oceancolor.gsfc.nasa.gov/ from my computer but not from my server.

Thanks.
by jvaldezch
Wed Jul 17, 2019 7:48 pm America/New_York
Forum: Home
Question: L2 Rhos CLDICE issues
Replies: 1

L2 Rhos CLDICE issues

Hi, I'm using l2gen in order to produce Rhos and getting AFAI product so we can identify sargassum on Mexico and the Caribbean but I'm getting some wierd results.As you can see on the following image (AFAI) I got this result:https://jvaldezch.files.wordpress.com/2019/07/modis_aqua_2019-190-1...
by jvaldezch
Tue May 07, 2019 2:16 pm America/New_York
Forum: Home
Question: l2mapgen is not exporting pixel values correctly.
Replies: 2

l2mapgen is not exporting pixel values correctly.

Thank you Sean, that solved my problem!
by jvaldezch
Tue May 07, 2019 1:31 pm America/New_York
Forum: Home
Question: l2mapgen is not exporting pixel values correctly.
Replies: 2

l2mapgen is not exporting pixel values correctly.

Hi,I'm using python for processing some L2 images in order to produce AFAI, the result is stored on L2 file and when using SeaDAS 7.5.1 data seems ok as you can see in the imagen below. But when exporting to tiff using l2mapgen I only get pixels value of 0.0010000000474974513. l2mapgen ifile=A20...
by jvaldezch
Thu Sep 27, 2018 7:06 pm America/New_York
Forum: Home
Question: Help with Aqua/Terra MODIS RGB 250 m
Replies: 14

Help with Aqua/Terra MODIS RGB 250 m

Hi Norman, thank you for your help it was hard to understand how GMT works. Here my preliminary results:



I will share a complete script asap.
by jvaldezch
Wed Sep 26, 2018 3:15 pm America/New_York
Forum: Home
Question: Help with Aqua/Terra MODIS RGB 250 m
Replies: 14

Help with Aqua/Terra MODIS RGB 250 m

Hi Norman,Not sure if doing the right thing, but I'm still gettin blak images, here are my steps:perl -e 'open X,"lon" or die;open Y,"lat" or die;open Z,"'rhos_469_q'" or die;while(read(Z,$z,4)){read(X,$x,4);read(Y,$y,4);print $x,$y,$z}' > rhos_469_q...
by jvaldezch
Mon Sep 24, 2018 7:12 pm America/New_York
Forum: Home
Question: Help with Aqua/Terra MODIS RGB 250 m
Replies: 14

Help with Aqua/Terra MODIS RGB 250 m

Hi Norman,

I found the issue. I have to change this line:

echo "P5\n7732 7733\n65535"|cat - nak.dat>$i.16bit.log.pgm

Into this:

echo $'P5\n7732 7733\n65535'|cat - nak.dat>$i.16bit.log.pgm

Now I got some black images but I think this is due coordinates.
by jvaldezch
Mon Sep 24, 2018 5:40 pm America/New_York
Forum: Home
Question: Help with Aqua/Terra MODIS RGB 250 m
Replies: 14

Help with Aqua/Terra MODIS RGB 250 m

Norman, here is the output:

~ # ls -l rhos_645_q.16bit.log.pgm
-rw-r--r-- 1 jvaldez jvaldez 154730541 Sep 24 16:37 rhos_645_q.16bit.log.pgm
~ # head -1 rhos_645_q.16bit.log.pgm
P5\n8862 8730\n65535
by jvaldezch
Mon Sep 24, 2018 3:09 pm America/New_York
Forum: Home
Question: Help with Aqua/Terra MODIS RGB 250 m
Replies: 14

Help with Aqua/Terra MODIS RGB 250 m

Both commands are showing the same error:~ # display rhos_555_q.16bit.log.pgm display: negative or zero image size `rhos_555_q.16bit.log.pgm' @ error/pnm.c/ReadPNMImage/434.~ # identify rhos_555_q.16bit.log.pgm identify: negative or zero image size `rhos_555_q.16bit.log.pgm' @ error/pnm.c/Re...