"""
Political boundaries
====================

The ``borders`` parameter of :meth:`pygmt.Figure.coast` specifies levels of
political boundaries to plot and the pen used to draw them. Choose from the
list of boundaries below:

* **1** = National boundaries
* **2** = State boundaries within the Americas
* **3** = Marine boundaries
* **a** = All boundaries (1-3)

For example, to draw national boundaries with a line thickness of 1 point and
black line color use ``borders="1/1p,black"``. You can draw multiple boundaries
by passing in a list to ``borders``.
"""

# %%
import pygmt

fig = pygmt.Figure()
# Make a Sinusoidal projection map of the Americas with automatic annotations,
# ticks and gridlines
fig.basemap(region=[-150, -30, -60, 60], projection="I-90/15c", frame="afg")
# Plot each level of the boundaries dataset with a different color.
fig.coast(borders=["1/0.5p,black", "2/0.5p,red", "3/0.5p,blue"], land="gray")
fig.show()