Hammer projection

The equal-area Hammer projection, first presented by the German mathematician Ernst von Hammer in 1892, is also known as Hammer-Aitoff (the Aitoff projection looks similar, but is not equal-area). The border is an ellipse, equator and central meridian are straight lines, while other parallels and meridians are complex curves.

h[lon0/]scale or H[lon0/]width

The projection is set with h or H. The central meridian is set with the optional lon0, and the figure size is set with scale or width.

import pygmt
from pygmt.params import Axis

fig = pygmt.Figure()
# Use region "d" to specify global region (-180/180/-90/90)
fig.coast(
    region="d",
    projection="H12c",
    frame=Axis(annot=True, tick=True, grid=True),
    land="ivory",
    water="bisque4",
)
fig.show()

🏷 Tags: equal-area