Search found 255 matches

by OB SeaDAS - knowles
Tue Dec 06, 2022 11:28 am America/New_York
Forum: Questions/Comments
Question: Density slice
Replies: 1

Re: Density slice

SeaDAS does not have a Density Slice tool. You can adjust the Min/Max values within the Color Manipulation Tool, which would have the effect of creating a single "color slice". If you wish to have multiple views ("slices") of a single band using differing Min/Max color settings, ...
by OB SeaDAS - knowles
Tue Dec 06, 2022 10:30 am America/New_York
Forum: Questions/Comments
Question: Kd490 calculation/formula
Replies: 6

Re: Kd490 calculation/formula

Regarding the last question ...

Using the equation and coefficients currently posted at:
https://oceancolor.gsfc.nasa.gov/atbd/kd/

here's a screenshot of what the MathBand tool would look like to create Kd_490 from the Rrs bands
Screen Shot 2022-12-06 at 10.14.28 AM.png
Screen Shot 2022-12-06 at 10.14.28 AM.png (390.18 KiB) Not viewed yet
by OB SeaDAS - knowles
Fri Nov 04, 2022 10:32 am America/New_York
Forum: Questions/Comments
Question: SeaDAS Spectrum View
Replies: 8

Re: SeaDAS Spectrum View

Hi Amita, SeaDAS bands cannot be grouped into folders by selectively highlighting them. However they can be grouped by specifying a colon delimited string mentioned earlier in this thread. SeaDAS additionally supports the use of the wildcard character "*" for grouping bands. To create the ...
by OB SeaDAS - knowles
Wed Nov 02, 2022 11:20 am America/New_York
Forum: Questions/Comments
Question: SeaDAS Spectrum View
Replies: 8

Re: SeaDAS Spectrum View

Can you post a screenshot of the File Manager GUI, it's bands in the folder, so we can know what you are trying to group? Also explain what your desired grouping is.
by OB SeaDAS - knowles
Tue Sep 27, 2022 9:43 am America/New_York
Forum: Questions/Comments
Question: traitement sur seadas
Replies: 4

Re: traitement sur seadas

For image aggregation you can either use the SeaDAS-OCSSW processors (l2bin, l3mapgen), or you can use the general tool: Mosaic Tool (SeaDAS > Menu > Raster > Geometric Operations > Mosaicking) There isn't a lot of OCSSW tutorials at the moment but this may help: https://seadas.gsfc.nasa.gov/help-8....
by OB SeaDAS - knowles
Tue Aug 16, 2022 2:04 pm America/New_York
Forum: Questions/Comments
Question: SeaDAS Spectrum View
Replies: 8

Re: SeaDAS Spectrum View

I don't believe the problem you are experiencing is associated with any difference between SeaDAS 8.2.0 and the prior SeaDAS 7 versions. The problem with your last plot is likely that you don't have your bands grouped together into folders in the File Manager. See the two attached images. The bands ...
by OB SeaDAS - knowles
Tue Aug 16, 2022 11:41 am America/New_York
Forum: Questions/Comments
Question: Reprojection
Replies: 4

Re: Reprojection

Here's a help page showing the algorithm methodology used in SeaDAS for reprojection

https://seadas.gsfc.nasa.gov/help-8.2.0/general/overview/ResamplingMethods.html
by OB SeaDAS - knowles
Thu Aug 04, 2022 12:05 pm America/New_York
Forum: Questions/Comments
Question: SeaDAS Spectrum View
Replies: 8

Re: SeaDAS Spectrum View

I think what you are asking about is the location of the Spectrum View tool. For SeaDAS this tool is located in the Analysis toolbar, or can be found in Menu > Optical > Spectrum View. Another way to find a tool is to type the tool name in the search field at the top right of SeaDAS 8 For any file w...
by OB SeaDAS - knowles
Mon Aug 01, 2022 2:25 pm America/New_York
Forum: Questions/Comments
Question: Seadas GEO.hdf
Replies: 8

Re: Seadas GEO.hdf

For the answer to your first question: Your csv file used to import the lat/lon values into the Pixel Extraction Tool needs to be a very precisely formatted text file. For example your csv file could be as follows (where "\t" denotes a tab character, and there are no other hidden character...
by OB SeaDAS - knowles
Thu Jul 07, 2022 11:59 am America/New_York
Forum: Questions/Comments
Question: SeaDAS MODIS Cloud Mask
Replies: 3

Re: SeaDAS MODIS Cloud Mask

The files you mention are not NASA OBPG files, but the following approach should be somewhat similar on your files. Using NASA OBPG files, a way to transfer the cloud mask from a L2 file into a L1B scene (of the same scene, same instrument, and same resolution) would be to open both the L2 file and ...