kandi X-RAY | python-Cartopy Summary
kandi X-RAY | python-Cartopy Summary
python-Cartopy
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Trending Discussions on python-Cartopy
QUESTION
I have a student facing a problem that is similar to what others are reporting when using older versions of MetPy and Cartopy.
The issue is the parse_cf() command under metpy. And it's happening under Google Colaboratory, of which I have little experience. Things are working fine on other platforms (anaconda, miniconda, homebrew, etc)
Previous feedback I've seen refers to rolling back the version of the cartopy library from 0.18.*. I have also followed previously posted guidance on Shapely, but we cannot seem to be able to change the versions of cartopy or metpy version in Google CoLab.
The version information for the environment and python libraries, followed by the code and error is below.
I'm at a loss here and have troubleshot it for my student about as far as I can go. Guidance would be appreciated by both of us.
System and Package Information
...ANSWER
Answered 2020-Nov-24 at 03:44The core problem here is that 0.14.2 is too old work with MetPy--though the fact that it crashes is a bug that will be fixed in the impending 1.0 release. To get a newer version of CartoPy installed on Collab, this recipe has worked for me (type these commands in cells):
QUESTION
I have an issue when adapting a simple dataset to generate temperature interpolation map from points
...ANSWER
Answered 2020-Oct-28 at 20:55So the problem is this line from the docs:
hres (float) – The horizontal resolution of the generated grid, given in the same units as the x and y parameters. Default 50000.
Here you pass hres=5000
, which is saying "generate a grid with 5000 units between points". For points coming through a map projection, this is generally meters, except that you're using PlateCarree()
, where the points are given in degrees. So for your current map projection, you should use an hres
value in degrees, so maybe 0.25 or 0.1. You'll also want to adjust search_radius
to a value in degrees (rather than the current 40km) as well--or leave it out and it will try to calculate something sensible.
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