python - How to pick unique colors of histogram bars in matplotlib? -


i trying plot several histogram on same plot figured out colors assigned different series, bother me little. there way of forcing color bars unique ?

that works small data set, when use lot of data, see problem coming back

here example, blue color assigned twice 2 different data samples

enter image description here

all examples , solutions attribute colors histograms in matplotlib (at least found) suggesting normalize x axis between 0 , 1 this example , not want have because important have real values in case.

is there solution ?

thanks

edit

one solution came convert cmap palette numpy array , use pyplot hist color calling palette

n = len(list_of_samples) sample_colors = cm.get_cmap('rdylbu', n) palette = sample_colors(np.arange(n))

but works hist plot function got error message 

valueerror: to_rgba: invalid rgba arg "[[ 0.64705884  0.          0.14901961  1.        ]  [ 0.89187675  0.2907563   0.20000001  1.        ]  [ 0.98711484  0.64593837  0.36358543  1.        ]  [ 0.99719888  0.91316527  0.61736696  1.        ]  [ 0.91316529  0.96638656  0.90868344  1.        ]  [ 0.63977591  0.82633053  0.90028011  1.        ]  [ 0.34957983  0.55294117  0.75462185  1.        ]  [ 0.19215687  0.21176471  0.58431375  1.        ]]" length-1 arrays can converted python scalars

a solution histograms follows:

import pylab pl  n, bins, patches = pl.hist(pl.rand(1000), 20)  jet = pl.get_cmap('jet', len(patches))  in range(len(patches)):     patches[i].set_facecolor(jet(i))

result:

enter image description here

i hope that's looking for.


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