Search found 262 matches
- 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.
- 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....
- 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 ...
- 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
https://seadas.gsfc.nasa.gov/help-8.2.0/general/overview/ResamplingMethods.html
- 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...
- 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...
- 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 ...
- Wed Jun 29, 2022 2:34 pm America/New_York
- Forum: Questions/Comments
- Question: Project Terra MODIS L1B Swath to L3 500m Sin Grid
- Replies: 4
Re: Project Terra MODIS L1B Swath to L3 500m Sin Grid
You can use the SeaDAS software to reproject NASA OBPG MODIS L1B files to the projection of a mapped image file. Use the SeaDAS Reproject Tool with the MODIS L1B file as the input (source) file and choose "Use CRS of" to specify the mapped file which contains your desired (coordinate refer...
- Wed Jun 29, 2022 2:17 pm America/New_York
- Forum: Questions/Comments
- Question: process derived products with SeaDAS
- Replies: 4
Re: process derived products with SeaDAS
You can process any SeaDAS Level-2 file to a mapped SMI image file using l2bin followed by l3mapgen.
Input: L2 file > program: l2bin > Output: L3 bin file
Input:L3 bin file > program: l3mapgen > Output: L3 mapped file
Input: L2 file > program: l2bin > Output: L3 bin file
Input:L3 bin file > program: l3mapgen > Output: L3 mapped file
- Tue May 24, 2022 4:49 pm America/New_York
- Forum: Questions/Comments
- Question: Selecting reflectance math band
- Replies: 2
Re: Selecting reflectance math band
The BandMath expression to replicate the Chl GlobColour equation 6 of the paper you reference would be: First create band named R: if (log10(Rrs_443/Rrs_555) > log10(Rrs_490/Rrs_555) and log10(Rrs_443/Rrs_555) > log10(Rrs_510/Rrs_555)) then log10(Rrs_443/Rrs_555) else ( if (log10(Rrs_490/Rrs_555) > ...