[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[python #DNR-894223]: (No Subject)

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [python #DNR-894223]: (No Subject)
  • Date: Fri, 14 May 2021 15:01:17 -0600
Greetings!

Those messages aren't actually errors, but are warnings that your dataset is 
missing some metadata that MetPy uses to understand the data. I get those same 
messages when running the notebook locally.

If you really are running into an error, make sure you have the latest copy of 
the notebook which contains some fixes for MetPy 1.0:

  
https://github.com/Unidata/python-training/blob/master/pages/gallery/850hPa_QVectors.ipynb

Regarding reading grib data, I would recommend reading it into xarray using 
cfgrib:

  https://github.com/ecmwf/cfgrib
  http://xarray.pydata.org/en/stable/examples/ERA5-GRIB-example.html

Hope this helps!

Ryan

> Hello,
> i try to run your python script  for q vectors but i get this message back
> "Could not find variable corresponding to the value of grid_mapping:
> LatLon_Projection
> 
> Found valid latitude/longitude coordinates, assuming latitude_longitude for
> projection grid_mapping variable
> 
> Could not find variable corresponding to the value of grid_mapping:
> LatLon_Projection
> 
> Found valid latitude/longitude coordinates, assuming latitude_longitude for
> projection grid_mapping variable
> 
> Could not find variable corresponding to the value of grid_mapping:
> LatLon_Projection
> 
> Found valid latitude/longitude coordinates, assuming latitude_longitude for
> projection grid_mapping variable
> 
> Could not find variable corresponding to the value of grid_mapping:
> LatLon_Projection........"
> 
> 
> in my terminal.
> 
> Also could you help me how can i give my grib files as an input to compute
> and plot q vectors for any time in the past?
> 
> 
> Best regards


Ticket Details
===================
Ticket ID: DNR-894223
Department: Support Python
Priority: Low
Status: Closed
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.