Orthographic projection

This is a perspective projection like the general perspective, but with the difference that the point of perspective lies in infinite distance. It is therefore often used to give the appearance of a globe viewed from outer space, were one hemisphere can be seen as a whole. It is neither conformal nor equal-area and the distortion increases near the edges.

glon0/lat0[/horizon]/scale or Glon0/lat0[/horizon]/width

• g or G: Sets the projection type.

• lon0/lat0: Sets the projection center.

• horizon: Sets the maximum distance from the projection center in degrees (<= 90°) [Optional, default is 90°].

• scale or width: Sets the map size.

import pygmt
from pygmt.params import Axis

fig = pygmt.Figure()
fig.coast(
    region="g",
    projection="G10/52/12c",
    frame=Axis(annot=True, tick=True, grid=True),
    land="khaki",
    water="white",
)
fig.show()