Search found 227 matches

by OB SeaDAS - knowles
Thu Jul 09, 2020 3:37 pm America/New_York
Forum: Questions/Comments
Question: Selecting bands from different files for scatter plot?
Replies: 5

Selecting bands from different files for scatter plot?

Barry, this case study video tutorial illustrates the use of the Collocation Tool in comparing files and using statistics.
https://www.youtube.com/watch?v=5dIwCK7IDXE

More videos can be found here:
https://seadas.gsfc.nasa.gov/tutorials/video_tutorials/

Danny
by OB SeaDAS - knowles
Thu Jul 09, 2020 3:09 pm America/New_York
Forum: Questions/Comments
Question: Selecting bands from different files for scatter plot?
Replies: 5

Selecting bands from different files for scatter plot?

Oftentimes with SeaDAS there are 2 or more ways of doing something.  Another approach would be to use the Collocation Tool.  This tool will create a new file which contains all the bands of your 2 source files.  If the source files contain differing projections then this tool will sti...
by OB SeaDAS - knowles
Tue Jun 02, 2020 4:13 pm America/New_York
Forum: Questions/Comments
Question: Cropping .L3m Images Through Command Line
Replies: 1

Cropping .L3m Images Through Command Line

Since your input file is a mapped file then with SeaDAS the best option for geographically cropping a file at the command line would be to use the gpt Subset operator.  See the GPT Cookbook within the SeaDAS 7.5.x GUI (Menu > Help > Cookbooks > GPT Cookbook).  Go to the section on the &quo...
by OB SeaDAS - knowles
Fri May 22, 2020 3:07 pm America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

As a note since SeaDAS 7 has a platform dependent gpt executable filename, I'm using "gpt" as an alias for convenience:

For example I have on my mac in the file ~/.profile:
export SEADASROOT=/Users/seadas/SeaDAS_Installations/seadas-7.5.3
alias gpt=$SEADASROOT/bin/gpt.command

Danny
by OB SeaDAS - knowles
Fri May 22, 2020 2:44 pm America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

Are you using SeaDAS Version 7.5.3?
by OB SeaDAS - knowles
Fri May 22, 2020 11:01 am America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

I downloaded the file (https://oceandata.sci.gsfc.nasa.gov/ob/getfile/AQUA_MODIS.20071229T071507.L2.SST.nc) and ran it on my mac with no problem.I used your graph file and the command line I used is:gpt reproject.xml -Ssource=AQUA_MODIS.20071229T071507.L2.SST.nc -f GeoTIFF -Ptarget=AQUA_MODIS.200712...
by OB SeaDAS - knowles
Wed Apr 29, 2020 11:46 am America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

This is correct Amita.  If you save the file then the reprojection occurs for all bands.  As I mentioned, if you create a "virtual" file (not saved but just in the GUI) then the reprojection does not occur until you view the band.

thanks
Danny
by OB SeaDAS - knowles
Mon Apr 27, 2020 2:13 pm America/New_York
Forum: Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

In addition to possible memory allocation differences between the GUI and command line gpt run of Reprojection, the GUI run of Reprojection can be extremely fast if you choose to NOT save the target file.  In this GUI case, the target file is "virtual" and reprojection does not actual...
by OB SeaDAS - knowles
Tue Feb 04, 2020 11:58 am America/New_York
Forum: Questions/Comments
Question: command line OCSSW advice
Replies: 21

command line OCSSW advice

MSI and OLCI are not supported yet within the SeaDAS GUI, but can be done on the command line.  OCSSW works well on both Linux and Mac.  There is currently no tutorial on l2gen command line but some of the presentation slides give a broad overview of the l2gen features.To install the MSI/O...
by OB SeaDAS - knowles
Thu Oct 10, 2019 2:17 pm America/New_York
Forum: Questions/Comments
Question: the color of images generated by SeaDAS
Replies: 1

the color of images generated by SeaDAS

Yes the colors do indicate the chlorophyll concentration.  To view the color bar (legend) of a particular image, right click on the image and select "Export Colorbar" or there is an shortcut icon in the menu bar.  The range (thresholds) can be adjusted in the Color Manager window...