This tutorial was generated from an IPython notebook that can be downloaded here.


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:

import regionmask


Plot all regions

Do the default plot.


Plot only a Subset of Regions

# load cartopy
import 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)



This does not create a cartopy axes.

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

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));