Hi,
according to the documentation, scatter should accept a 1D float array for
color kwarg. Therefore, I thought the following code would work (and I think
it worked at some point in the past; I'm currently using matplotlib 0.99.0):
import numpy as N
from matplotlib import pyplot as P
x = N.random.randn(100)
y = N.random.randn(100)
z = N.random.randn(100)**2
fig = P.figure()
ax = fig.add_subplot(1,1,1)
cmap = P.matplotlib.cm.jet
norm = P.matplotlib.colors.Normalize(vmin=0, vmax=1)
sc = ax.scatter(x,y,
color=z,
cmap=cmap,
norm=norm,
)
But this crashes with the following error:
[...]
/data/ycopin/Softs/local/lib/python2.4/site-packages/matplotlib/colors.pyc in
to_rgba_array(self, c, alpha)
377 if isinstance(c, np.ndarray):
378 if c.ndim != 2 and c.dtype.kind not in 'SU':
--> 379 raise ValueError("Color array must be
two-dimensional")
380 if (c.ndim == 2 and c.shape[1] == 4 and c.dtype.kind
== 'f'):
381 if (c.ravel() > 1).any() or (c.ravel() < 0).any():
ValueError: Color array must be two-dimensional
So my question is: is the documentation just outdated, or is it a regression
in scatter?
Cheers,
--
.~. Yannick COPIN (o:>* Doctus cum libro
/V\ Institut de physique nucléaire de Lyon
// \\ Université de Lyon - CNRS-IN2P3
/( )\ AIM: YnCopin ICQ: 236931013
^`~'^ http://snovae.in2p3.fr/ycopin/
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