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Add log option to Axes.hist2d #1061

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merged 2 commits into from Sep 4, 2012
Merged

Add log option to Axes.hist2d #1061

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4e82fa8
Add note regarding use of LogNorm with hist2d
bgamari Aug 22, 2012
d33877c
Add example for logarithmic hist2d
bgamari Aug 28, 2012
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10 changes: 10 additions & 0 deletions examples/pylab_examples/hist2d_log_demo.py
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@@ -0,0 +1,10 @@
from matplotlib.colors import LogNorm
from pylab import *

#normal distribution center at x=0 and y=5
x = randn(100000)
y = randn(100000)+5

hist2d(x, y, bins=40, norm=LogNorm())
colorbar()
show()
6 changes: 5 additions & 1 deletion lib/matplotlib/axes.py
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Expand Up @@ -8077,7 +8077,11 @@ def hist2d(self, x, y, bins = 10, range=None, normed=False, weights=None,
All bins that has count more than cmax will not be displayed (set to none before passing to imshow)
and these count values in the return value count histogram will also be set to nan upon return

Remaining keyword arguments are passed directly to :meth:pcolorfast
Remaining keyword arguments are passed directly to :meth:`pcolorfast`.

Rendering the histogram with a logarithmic color scale is
accomplished by passing a :class:`colors.LogNorm` instance to
the *norm* keyword argument.

**Example:**

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