Search found 245 matches

by OB SeaDAS - knowles
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: 3

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...
by OB SeaDAS - knowles
Wed Jun 29, 2022 2:17 pm America/New_York
Forum: Questions/Comments
Question: process derived products with SeaDAS
Replies: 2

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
by OB SeaDAS - knowles
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) > ...
by OB SeaDAS - knowles
Tue May 24, 2022 2:40 pm America/New_York
Forum: Questions/Comments
Question: Output setting of batch processing changes
Replies: 5

Re: Output setting of batch processing changes

The bad news here is that I can confirm when I load into either the GUI Graph Builder or the GUI Batch Processing an xml file for the Reproject operator containing the fields of the Reproject "Output Parameters", these particular parameters are NOT loaded in, and the defaults are used. We ...
by OB SeaDAS - knowles
Tue May 24, 2022 2:11 pm America/New_York
Forum: Questions/Comments
Question: I wonder the meaning of reference pixel
Replies: 7

Re: I wonder the meaning of reference pixel

The default settings of the Reproject Tool are fine if you wish to reproject the source scene while retaining it's original boundaries and resolution. However, if you wish to have the Reproject Tool crop your scene into a specified region and/or adjust the resolution, then modifying the "Output...
by OB SeaDAS - knowles
Mon May 23, 2022 4:56 pm America/New_York
Forum: Questions/Comments
Question: Output setting of batch processing changes
Replies: 5

Re: Output setting of batch processing changes

In order for us to replicate what you are seeing, can you provide the file myGraph3.xml which you are loading into the Batch Processing tool (or can you upload the file's full contents)?
by OB SeaDAS - knowles
Thu May 12, 2022 6:57 pm America/New_York
Forum: Questions/Comments
Question: contours of bathymetry required
Replies: 12

Re: contours of bathymetry required

You can add contours in SeaDAS as described in the previous post. Note that you can only make contours on the selected band. So since you want contours of Bathymetry overlaid on chlor_a, you will need to: 1. Load VIIRS file. 2. Create bathymetry (which creates a band called "bathymetry" 3....
by OB SeaDAS - knowles
Thu Apr 28, 2022 9:17 am America/New_York
Forum: Questions/Comments
Question: Mismatch between input geographic limits and output of l2gen for MODISA using V2022.0
Replies: 10

Re: Mismatch between input geographic limits and output of l2gen for MODISA using V2022.0

Hi bijaylaxmi, l2gen can subset the standard resolutions, however for the case of MODIS with the extra resolution options, the 250m and 500m resolution options does not currently subset correctly to the requested geographic boundaries. For MODIS at 1km resolution, the l2gen subset option works fine....
by OB SeaDAS - knowles
Thu Apr 28, 2022 8:43 am America/New_York
Forum: Questions/Comments
Question: Mismatch between input geographic limits and output of l2gen for MODISA using V2022.0
Replies: 10

Re: Mismatch between input geographic limits and output of l2gen for MODISA using V2022.0

Hi Zhigang,

There is not yet an OCSSW tag V2022.1. Here are the OCSSW operational tags (V2022.0 being the latest tag) as of today (Apr 28, 2022):
V2020.0
V2020.1
V2020.2
V2021.0
V2021.1
V2021.2
V2022.0
by OB SeaDAS - knowles
Tue Apr 26, 2022 4:14 pm America/New_York
Forum: Questions/Comments
Question: Seadas T2022.2 modis_atteph and getanc issues
Replies: 12

Re: Seadas T2022.2 modis_atteph and getanc issues

There is a sea ice concentration band contained within the SST ancillary file, so this replaces the NSIDC file. Going forward, the program getanc will return the SST file for both the sstfile and icefile parameters and will not return the NSIDC file for the icefile parameter.