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%matplotlib inline
%config InlineBackend.figure_format = "retina"

from matplotlib import rcParams

rcParams["savefig.dpi"] = 200
rcParams["font.size"] = 8

import warnings

warnings.filterwarnings("ignore")

Plotting

Every region has a plotting function, that draws the outline of all (or selected) regions on a cartopy map. We use the predefined SREX regions as example.

Import regionmask and check the version:



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import regionmask

regionmask.__version__

Plot all regions

Do the default plot.



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regionmask.defined_regions.srex.plot();

Plot only a Subset of Regions



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# load cartopy
import cartopy.crs as ccrs

# regions can be selected by number, abbreviation or long name
regions = [11, "CEU", "S. Europe/Mediterranean"]

# choose a good projection for regional maps
proj = ccrs.LambertConformal(central_longitude=15)

# do the plot
ax = regionmask.defined_regions.srex.plot(
    regions=regions, add_ocean=True, resolution="50m", proj=proj, label="abbrev"
)

# fine tune the extent
ax.set_extent([-15, 45, 28, 76], crs=ccrs.PlateCarree())

Plotting the region outlines only (no map)



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regionmask.defined_regions.srex.plot_regions();

.. note:: This does *not* create a cartopy axes.

To achieve this, you need to explicitely create the axes:



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import matplotlib.pyplot as plt

f, ax = plt.subplots(subplot_kw=dict(projection=ccrs.PlateCarree()))

regionmask.defined_regions.srex.plot_regions(ax=ax, line_kws=dict(lw=1));