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Added clim support to tripcolor #22734

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Merged
merged 1 commit into from
Mar 31, 2022
Merged

Added clim support to tripcolor #22734

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10 changes: 10 additions & 0 deletions lib/matplotlib/tests/test_triangulation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,16 @@ def test_tripcolor_color():
ax.tripcolor(x, y, facecolors=[1, 2]) # faces


def test_tripcolor_clim():
np.random.seed(19680801)
a, b, c = np.random.rand(10), np.random.rand(10), np.random.rand(10)

ax = plt.figure().add_subplot()
clim = (0.25, 0.75)
norm = ax.tripcolor(a, b, c, clim=clim).norm
assert((norm.vmin, norm.vmax) == clim)


def test_tripcolor_warnings():
x = [-1, 0, 1, 0]
y = [0, -1, 0, 1]
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14 changes: 5 additions & 9 deletions lib/matplotlib/tri/tripcolor.py
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Expand Up @@ -115,13 +115,14 @@ def tripcolor(ax, *args, alpha=1.0, norm=None, cmap=None, vmin=None,
if 'antialiaseds' not in kwargs and ec.lower() == "none":
kwargs['antialiaseds'] = False

_api.check_isinstance((Normalize, None), norm=norm)
if shading == 'gouraud':
if facecolors is not None:
raise ValueError(
"shading='gouraud' can only be used when the colors "
"are specified at the points, not at the faces.")
collection = TriMesh(tri, **kwargs)
colors = point_colors
collection = TriMesh(tri, alpha=alpha, array=point_colors,
cmap=cmap, norm=norm, **kwargs)
else:
# Vertices of triangles.
maskedTris = tri.get_masked_triangles()
Expand All @@ -136,14 +137,9 @@ def tripcolor(ax, *args, alpha=1.0, norm=None, cmap=None, vmin=None,
colors = facecolors[~tri.mask]
else:
colors = facecolors
collection = PolyCollection(verts, alpha=alpha, array=colors,
cmap=cmap, norm=norm, **kwargs)

collection = PolyCollection(verts, **kwargs)

collection.set_alpha(alpha)
collection.set_array(colors)
_api.check_isinstance((Normalize, None), norm=norm)
collection.set_cmap(cmap)
collection.set_norm(norm)
collection._scale_norm(norm, vmin, vmax)
ax.grid(False)

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