Spilhaus projection

The Spilhaus projection is a world map projection that presents the world’s oceans as one contiguous body of water, with Antarctica at the top. It was developed by Athelstan Spilhaus and is useful for oceanographic studies.

+proj=spilhaus+scale=scale or +proj=spilhaus+width=width

• +proj=spilhaus: Sets the projection type.

• scale or width: Sets the map size.

Note

This projection works well for coastlines but currently has issues for filling land and water masses.

import pygmt
from pygmt.params import Axis

fig = pygmt.Figure()
# Use the PROJ string to set the Spilhaus projection
fig.coast(
    region="d",
    projection="+proj=spilhaus+width=12c",
    frame=Axis(annot=True, tick=True, grid=True),
    shorelines=True,
)
fig.show()