Basic UsageΒΆ
Import mpltern as well as Matplotlib as:
import matplotlib.pyplot as plt
import mpltern
By import mpltern, a Matplotlib projection 'ternary' is
registered inside.
Then, make TernaryAxes e.g. as:
ax = plt.subplot(projection='ternary')
It is already possible to create ternary plots using the methods in ax.
For example:
from mpltern.ternary.datasets import get_spiral
t, l, r = mpltern.datasets.get_spiral()
# t: [0.33333333 0.33357906 0.33430414 ...]
# l: [0.33333333 0.33455407 0.33543547 ...]
# r: [0.33333333 0.33186687 0.33026039 ...]
ax.plot(t, l, r)
plt.show()
You may see the following Archimedean spiral in the triangle.
Contour-like plots are also possible in mpltern.
ax = plt.subplot(projection='ternary')
from mpltern.ternary.datasets import get_shanon_entropies
t, l, r, v = get_shanon_entropies()
# t: [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.1 0.1 0.1 ...]
# l: [ 0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1. 0. 0.1 0.2 ...]
# r: [ 1. 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0. 0.9 0.8 0.7 ...]
# v: [-0. 0.32508297 0.50040242 ...]
ax.tricontourf(t, l, r, v)
plt.show()
