Lambert conic conformal projection

This conic projection was designed by the Alsatian mathematician Johann Heinrich Lambert (1772) and has been used extensively for mapping of regions with predominantly east-west orientation, just like the Albers projection. Unlike the Albers projection, Lambert’s conformal projection is not equal-area. The parallels are arcs of circles with a common origin, and meridians are the equally spaced radii of these circles. As with Albers projection, it is only the two standard parallels that are distortion-free.

llon0/lat0/lat1/lat2/scale or Llon0/lat0/lat1/lat2/width

• l or L: Sets the projection type.

• lon0/lat0: Sets the projection center.

• lat1/lat2: Sets the two standard parallels.

• scale or width: Sets the map size.

import pygmt
from pygmt.params import Axis

fig = pygmt.Figure()
fig.coast(
    region=[-130, -70, 24, 52],
    projection="L-100/35/33/45/12c",
    frame=Axis(annot=True, tick=True, grid=True),
    land="seagreen",
    water="gray90",
)
fig.show()

🏷 Tags: conformal