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[python #UMK-725743]: nexrad level III plotting with Metpy

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  • Subject: [python #UMK-725743]: nexrad level III plotting with Metpy
  • Date: Mon, 28 Jun 2021 16:22:26 -0600
Greetings!

I think changing your call to pcolor to:

    plot = ax.pcolor(lat, lon, data, cmap=cmap, norm=norm, zorder = 0, 
transform=ccrs.PlateCarree())

In your original code, with CartoPy when you don't pass `transform`, it assumes 
the x/y values you pass in (the `lat` and `lon` arrays in this case) are in the 
same coordinates as your Axes, which in this case is a Lambert Conformal 
projection. To tell it they represent coordinates in a lat/lon projection, you 
need to pass `transform=ccrs.PlateCarree()`, as I've done above.

Hope this helps!

Ryan

> Hi Ryan,
> Thanks for the tips.  OK, I've made some progress, but I think I'm missing
> something still.
> 
> the FSX-demo5.py script :
> http://www.met.sjsu.edu/weather/radartest/FSX-demo5.py
> 
> produces this, with correct radar data and orientation:
> http://www.met.sjsu.edu/weather/radartest/demo-5.png
> 
> But when I uncomment the set_extent line, I can get the counties to plot,
> but not the actual data.
> http://www.met.sjsu.edu/weather/radartest/FSX-demo6.py
> 
> http://www.met.sjsu.edu/weather/radartest/demo-6.png
> 
> <http://www.met.sjsu.edu/weather/radartest/demo-6.png>


Ticket Details
===================
Ticket ID: UMK-725743
Department: Support Python
Priority: Low
Status: Closed
===================
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