Writing specific fields

[bdolan44]

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I think it would be very useful to be able to specify the fields to write out. Something along the lines of

pyart.io.write(radar,fields = ['reflectivity','differential_reflectivity','velocity']")

[scollis]

Great idea! Assigning @zssherman

[zssherman]

Sounds good to me, I don't think it will be difficult to implement at all. I will take a look.

[swnesbitt]

Chiming in here – would it be more useful to write a function that selected fields from a radar object?This could make it easier to also do memory management, etc. Also would expand on a more pandas/xarray-like syntax. We already have extract_sweeps but this could get unified into a more general slicing/dicing syntax.

This could follow the xarray syntax, for example

radar1.sel(field=[‘reflectivity’,’velocity’]) and maybe in the future radar1.sel(azimuth=slice([90,150])) radar1.sel(sweep=slice(1,3))

This could easily be put into a one-liner pyart.io.write(radar1.sel(fields = ['reflectivity','differential_reflectivity','velocity'])) or eventually (to follow pandas/xarray syntax) radar1.sel(field=[‘reflectivity’,‘velocity’]).to_cfradial(‘file.nc’)

Just my two pennies, -Steve

[zssherman]

@swnesbitt I do like that idea, and now with xarray being used for the grids, its already a dependency. I'll see what I can code up.

[bdolan44]

Yes, 1-up on @swnesbitt's comment. That would be fantastic.

[zssherman]

Completed in #1319 , closing.

[mgrover1]

@bdolan44 this is now available in the latest release of Py-ART

[bdolan44]

Fantastic! I was just thinking about this functionality again recently. Thanks!