unexpected exception

Please enter here to ask a question about any NASA Science related topics!
Post Reply
kareem11
Posts: 4
Joined: Mon Mar 15, 2021 5:53 pm America/New_York

unexpected exception

by kareem11 » Mon Mar 15, 2021 5:55 pm America/New_York

What does this mean?

java.lang.NullPointerException
at gov.nasa.gsfc.seadas.dataio.SeadasFileReader.attributeToMetadata(SeadasFileReader.java:1242)
at gov.nasa.gsfc.seadas.dataio.SeadasFileReader.addAttributeToElement(SeadasFileReader.java:1227)
at gov.nasa.gsfc.seadas.dataio.SeadasFileReader.addAttributesToElement(SeadasFileReader.java:1221)
at gov.nasa.gsfc.seadas.dataio.SeadasFileReader.addGlobalMetadata(SeadasFileReader.java:873)
at gov.nasa.gsfc.seadas.dataio.SMIFileReader.createProduct(SMIFileReader.java:100)
at gov.nasa.gsfc.seadas.dataio.SeadasProductReader.readProductNodesImpl(SeadasProductReader.java:185)
at org.esa.snap.core.dataio.AbstractProductReader.readProductNodes(AbstractProductReader.java:178)
at org.esa.snap.core.dataio.ProductIO.readProduct(ProductIO.java:179)
at org.esa.snap.rcp.actions.file.ReadProductOperation.run(ReadProductOperation.java:61)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)

Tags:

OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 34
Joined: Tue Feb 09, 2021 5:42 pm America/New_York

Re: unexpected exception

by OB SeaDAS - xuanyang02 » Tue Mar 16, 2021 10:27 am America/New_York

It means that you are trying to open a file and there is something in the file that SeaDAS does not like. It might be helpful if you could tell us what file you tried to read?

Bing

kareem11
Posts: 4
Joined: Mon Mar 15, 2021 5:53 pm America/New_York

Re: unexpected exception

by kareem11 » Tue Mar 16, 2021 10:42 am America/New_York

I was trying to read data that I downloaded from oceancolor on chlorophyl concentration and sst. Both smi and bin files cannot be read. When I tried to open bin file "No appropriate product reader found.
File 'C: .... A20203362020366.L3b_MO_CHL.nc' can not be opened." this appear and when I tried the smi file the previous problem popped out.

OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 34
Joined: Tue Feb 09, 2021 5:42 pm America/New_York

Re: unexpected exception

by OB SeaDAS - xuanyang02 » Tue Mar 16, 2021 4:13 pm America/New_York

The L3b file format is not a raster image format. The internal data model for SeaDAS is based on 2D raster images, so visualizing the L3b files is not directly possible.
The data need to be mapped prior to display. You can use OCSSW -> l3mapgen to map A20203362020366.L3b_MO_CHL.nc, and then open A20203362021001.L3m_CU.nc (the default file name for the l3mapgen output).

Bing

Post Reply