Martin Mokrejs wrote:
> Hi,
> I am trying to improve my code where I cannot find out why matplotlib-1.1.0
> does not
> support colors specified as RG tuples. Here is an example.
>
>
>
> import numpy as np
> import matplotlib.pyplot as plt
>
> _nums = [160.0, 160.0, 160.0, 95.0, 160.0, 160.0]
Grr. This was the trick:
_nums = [[160.0], [160.0], [160.0], [95.0], [160.0], [160.0]]
What a wasteful list creation. :(
> _colors = [(0.5019607843137255, 0.0, 0.5019607843137255),
> (0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
> 0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255),
> (0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
> 0.5019607843137255)]
> _legends = ['foo', 'foo', 'foo', 'blah', 'foo', 'foo']
>
> plt.hist(_nums, histtype='bar', align='mid', color=_colors, log=False,
> label=_legends)
>
> plt.show()
>
>
> The above code gives me:
>
> File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 2332,
> in hist
> ret = ax.hist(x, bins, range, normed, weights, cumulative, bottom,
> histtype, align, orientation, rwidth, log, color, label, **kwargs)
> File "/usr/lib64/python2.7/site-packages/matplotlib/axes.py", line 7598, in
> hist
> raise ValueError("color kwarg must have one color per dataset")
> ValueError: color kwarg must have one color per dataset
>
>
> Mainly, I am suggesting the error message to be improved and to write out how
> many
> items were in data, color and legend iterables passed to the function. That
> would help
Would it tells me my problem is not with color but with data points life would
be much easier. ;)
> in some cases albeit not with this example. That needs some other fix. ;)
>
> I would like that one can also pass in a list of HTML-like colors, e.g.
> 'F0F8FF' or 0xF0F8FF
> would be valid.
Sorry, meant also '#F0F8FF', but now I have verified that they do work already:
_colors = ['b', 'b', 'b', 'r', 'b', 'b']
_colors = ['#C0C0C0', '#C0C0C0', '#C0C0C0', '#800000', '#C0C0C0', '#C0C0C0']
_colors = [(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255,
0.0, 0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255),
(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255)]
So this was all about *data* points to be wrapped in iterables. :((
Martin
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