Search found 250 matches

by OB SeaDAS - knowles
Thu Jan 07, 2021 11:30 am America/New_York
Forum: Questions/Comments
Question: Get the value from scatter plot
Replies: 2

Get the value from scatter plot

A scatterplot cannot create or export ROI data.  You might need to clarify what you are doing and how you are exporting the data.  I do not see a region of interest vector in the image which you show.  You didn't check the ROI checkbox so your scatterplot is based on the whole ima...
by OB SeaDAS - knowles
Thu Jan 07, 2021 10:59 am America/New_York
Forum: Questions/Comments
Question: Creating a 250m MODIS-A quasi true colour cropped image
Replies: 6

Creating a 250m MODIS-A quasi true colour cropped image

To create a quasi true color plate carrée mapped image for a ROI (region of interest) within a MODIS file the following GUI steps can be done:Example file: https://oceandata.sci.gsfc.nasa.gov/ob/getfile/A2010283180500.L1A_LAC.bz2Region of interest: north=39.0, south=37.0, west=-78.0, east=-75.0 1. ...
by OB SeaDAS - knowles
Thu Jan 07, 2021 9:18 am America/New_York
Forum: Questions/Comments
Question: Draw polygon on a scatter plot in SeaDAS
Replies: 5

Draw polygon on a scatter plot in SeaDAS

The scatterplot is created from the image.  You can mask areas of the image by drawing on the image using the polygon, ellipse, ... tools.  You can then apply this mask to refine the scatterplot.  However there are no tools in SeaDAS to enable the user to draw on the scatterplot and h...
by OB SeaDAS - knowles
Wed Oct 28, 2020 11:22 am America/New_York
Forum: Questions/Comments
Question: maskcloud
Replies: 2

maskcloud

Amita,Pixels can have NaN values for products for a multitude of reasons and NaN pixels can have a multitude of flags.  You can view all the flags for a pixel by hovering over it and observing all its flag values within the Pixel info tool window (... or by placing a pin on it and using this to...
by OB SeaDAS - knowles
Mon Oct 26, 2020 10:17 am America/New_York
Forum: Questions/Comments
Question: Resampling
Replies: 3

Resampling

You can use the Collocate tool with HICO as the reference/master and VIIRS as the dependent file.  This will generate a new file containing all the raster data bands from both input files.  The pixels of the generated file will geographically match those of the L2 HICO pixel.  Since a...
by OB SeaDAS - knowles
Wed Oct 21, 2020 10:22 am America/New_York
Forum: Questions/Comments
Question: Reprojecting L1 image
Replies: 1

Reprojecting L1 image

No, you cannot reproject L1 images and then run l2gen.  All the science processors within the OCSSW menu are strict science data processors with specific input file types and formats, tracking through specific science data levels.  The other more generic GUI/GPT tools such as Reproject, Su...
by OB SeaDAS - knowles
Mon Oct 19, 2020 9:34 am America/New_York
Forum: Questions/Comments
Question: Flags and Reprojected files
Replies: 12

Flags and Reprojected files

You can apply the flag masks using the original unprojected flag by setting the following field within the Reproject operator:<maskExpression>${maskExpression}</maskExpression>The flags themselves should not be reprojected as they really have no meaning since they are tied to multiple unprojected pi...
by OB SeaDAS - knowles
Mon Oct 05, 2020 10:10 am America/New_York
Forum: Questions/Comments
Question: Problem with importing contour lines shapefiles from seadas in arcgis
Replies: 2

Problem with importing contour lines shapefiles from seadas in arcgis

I've never used Arcgis, but the shapefile export tool should work fine in SeaDAS for contours.  You can test this by creating contours in SeaDAS, exporting the contours from within the File Info window (right click on Vector and select "Export Geometry as Shapefile").  Then o...
by OB SeaDAS - knowles
Thu Sep 17, 2020 9:53 am America/New_York
Forum: Questions/Comments
Question: Cloud Masking
Replies: 3

Cloud Masking

Hi Amita,I'm answering in regards to how you would do cloud masking on a rhos_865 band with other SeaDAS GUI tools instead of cloud masking with l2gen. In the Mask Manager tool window click on "f(x)" icon.  Click "Show bands".  At this point you can click and create...
by OB SeaDAS - knowles
Thu Aug 27, 2020 10:05 am America/New_York
Forum: Questions/Comments
Question: OLI L2 data
Replies: 6

OLI L2 data

If you are a loading a level-2 file into SeaDAS the Mask Manager panel shouldn't be blank.  Make sure your file is being loaded correctly and being recognized as a level-2 file.  To determine which "Product reader" SeaDAS is actually using on your file, go to File Manager, cl...