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fix for issue #5201, empty extension triangle for vmin < 1.0 #5319

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fix for issue #5201, empty extension triangle for vmin < 1.0 #5319

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e1a8687
fix for issue #5201, empty extension triangle for vmin < 1.0
arjenve Oct 26, 2015
ba5123c
fix for issue #5201, empty extension triangle for vmin < 1.0
arjenve Oct 26, 2015
345dad1
fix for issue #5201, added test case
arjenve Oct 26, 2015
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fix for issue #5201, added test case
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@arjenve
arjenve committed Oct 26, 2015
commit 345dad1b8ef39ebeb76ce339e5a05c1dbe38d18b
13 changes: 12 additions & 1 deletion lib/matplotlib/tests/test_colorbar.py
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Expand Up @@ -11,9 +11,11 @@
import matplotlib.pyplot as plt
from matplotlib import rcParams
from matplotlib.colors import BoundaryNorm
from matplotlib.colors import LogNorm
from matplotlib.cm import get_cmap
from matplotlib import cm
from matplotlib.colorbar import ColorbarBase
from nose.tools import assert_greater_equal


def _get_cmap_norms():
Expand Down Expand Up @@ -254,7 +256,16 @@ def test_colorbarbase():
ax = plt.gca()
ColorbarBase(ax, plt.cm.bone)


@cleanup
def test_colorbar_lognorm_extension():
# Issue #5201: empty triangle plotted
# for logarithmic colorbar with vmin < 1.0
ax = plt.gca()

cb = ColorbarBase(ax, norm=LogNorm(vmin=1, vmax=1000.0), orientation='vertical', extend='both')

assert_greater_equal(cb._values[0], 0.0)

@image_comparison(
baseline_images=['colorbar_closed_patch'],
remove_text=True)
Expand Down