defined_ocean_basins.rst

Marine Areas/ Ocean Basins (NaturalEarth)

The outline of the marine areas are obtained from Natural Earth. They are automatically downloaded on-the-fly (but only once) with cartopy and opened with geopandas. The following marine regions are defined in regionmask:

• Marine Areas 1:50m

python

# Use defaults so we don't get gridlines in generated docs import matplotlib as mpl mpl.rcdefaults() mpl.use('Agg')

# cut border when saving (for maps) mpl.rcParams["savefig.bbox"] = "tight"

The following imports are necessary for the examples.

python

import regionmask import matplotlib.pyplot as plt

Ocean Basins

python

basins = regionmask.defined_regions.natural_earth.ocean_basins_50

basins.plot(add_label=False);

@savefig plotting_basins.png width=100% plt.tight_layout()

Also create a mask for a 1° grid globally:

python

import numpy as np

# create a grid lon = np.arange(0.5, 360) lat = np.arange(89.5, -90, -1)

mask = basins.mask(lon, lat)

basins.plot(add_label=False, add_ocean=False);

# plot using xarray mask.plot(add_colorbar=False);

@savefig plotting_basins_mask.png width=100% plt.tight_layout()