"""
Points with varying transparency
--------------------------------

Points can be plotted with different transparency levels by passing in an array to the
``transparency`` argument of :meth:`pygmt.Figure.plot`.
"""

import numpy as np
import pygmt

# prepare the input x and y data
x = np.arange(0, 105, 5)
y = np.ones(x.size)
# transparency level in percentage from 0 (i.e., opaque) to 100
transparency = x

fig = pygmt.Figure()
fig.basemap(
    region=[-5, 105, 0, 2],
    frame=['xaf+l"Transparency level"+u%', "WSrt"],
    projection="X15c/6c",
)
fig.plot(x=x, y=y, style="c0.6c", color="blue", pen="1p,red", transparency=transparency)
fig.show()

Add a gallery example for varying transparent points (#654)