Describe the Enhancement

When reading gridded data, often from NetCDF files, the parsing of the grid can cause the MET tool to error out. That means that the grid information in the NetCDF file is either missing or inconsistent. It may be the case that the user is aware of the problem but still wants to process the data in MET. In this situation, it would be nice for users to supply the "set_attr_grid" option to manually define the grid information.

The set_attr_grid option does work BUT only if the library code was successful in actually parsing the grid information from the original files. Any errors in that process will cause the tool to error out. Two options to consider are:

(1) Change the NetCDF library errors to warning messages to prevent the tools from erroring out. But ignoring those warning would lead to bad output.

(2) Check for set_attr_grid PRIOR TO calling the NetCDF library code. Only attempt to parse the grid information from the file if it has not already been set.

Run the following commands with the attached file to demonstrate:

mv MITLL.ProxyEchoTopsCalibratedMosaic.20200831_235328_v_20200831_235328.nc.txt MITLL.ProxyEchoTopsCalibratedMosaic.20200831_235328_v_20200831_235328.nc
plot_data_plane MITLL.ProxyEchoTopsCalibratedMosaic.20200831_235328_v_20200831_235328.nc ~/plot.ps 'name="ProxyEchoTopsCalibratedMosaic"; level="(*,*)";'

This errors out, and defining a grid using "set_attr_grid" does NOT prevent that.

MITLL.ProxyEchoTopsCalibratedMosaic.20200831_235328_v_20200831_235328.nc.txt

Time Estimate

1 day

Sub-Issues

Consider breaking the enhancement down into sub-issues.
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Relevant Deadlines

Would be nice to include in 10.0.0 if possible

Funding Source

None

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• Select engineer(s) or no engineer required: John HG
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• METplus, MET, METdatadb, METviewer, METexpress, METcalcpy, METplotpy

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