Re: [Matplotlib-users] Display chinese labels

[Michael D. <md...@st...>]

On 10/10/2010 03:13 PM, Benoit Gaillard wrote:
> Hi,
>
> How can one display Mandarin labels in a plot, as yticks_labels for 
> example?
> It looks to me that there is no font in matplotlib that can display 
> Chinese
> characters? I can display accentuation from 'utf8' but i could not find a
> font family that would display Chinese characters.
>
> Here is an example of plot that displays empty boxes instead of Chinese
> characters. In comments you can see various failed attempts:
>
> import matplotlib as mpl
> from matplotlib import cm
> from matplotlib import rc
> #rc('font',**{'family':'sans-serif','sans-serif':['SimHei','Arial']})
> #mpl.rcParams['font.sans-serif'] = ['SimHei','Arial']
> import matplotlib.pyplot as plt
>
> matrix=[[skey+tkey for skey in [1,2]] for tkey in [1,2]]
> fig = plt.figure()
> axim = fig.add_subplot(111)
> #ytics: caractères chinois en utf8
> ytics=['\xe6\x8a\xb1'.decode('utf8'),'\xe6\x93\x81'.decode('utf8')]
> xtics=['d\xc3\xa9bo\xc3\xaeter'.decode('utf8'),'diviser'.decode('utf8')]
> axim.imshow(matrix, cmap=cm.jet, interpolation='nearest',origin='lower')
> axim.set_xticks(range(2)) 
> axim.set_xticklabels(xtics,fontsize=15,rotation=25,ha='right',family='monospace') 
>
> axim.set_yticks(range(2))
> axim.set_yticklabels(ytics,fontsize=15,family='fantasy')#,fontname='AR 
> PL ungtiL GB')
> plt.show()
>
> Thank you for your help,
>
> Benoit
>
>
>
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>
>
>
> Hi,
>
> How can one display mandarin labels in a plot, as yticks_labels for 
> example? It looks to me that there is no font in matplotlib that can 
> display chinese characters? I can display accentuation from 'utf8' but 
> i could not find a font family that would display chinese characters.
>
> Here is an example of plot that displays empty boxes instead of 
> chinese characters. In comment you can see various failed attempts:
>
> import matplotlib as mpl
> from matplotlib import cm
> from matplotlib import rc
> #rc('font',**{'family':'sans-serif','sans-serif':['SimHei','Arial']})
> #mpl.rcParams['font.sans-serif'] = ['SimHei','Arial']
> import matplotlib.pyplot as plt
>
>     matrix=[[skey+tkey for skey in [1,2]] for tkey in [1,2]]
>     fig = plt.figure()
>     axim = fig.add_subplot(111)
>     #ytics: caractères chinois en utf8
>     ytics=['\xe6\x8a\xb1'.decode('utf8'),'\xe6\x93\x81'.decode('utf8')]
>     
> xtics=['d\xc3\xa9bo\xc3\xaeter'.decode('utf8'),'diviser'.decode('utf8')]
>     axim.imshow(matrix, cmap=cm.jet, interpolation='nearest', 
> origin='lower')
>     axim.set_xticks(range(2))
>     axim.set_xticklabels(xtics, 
> fontsize=15,rotation=25,ha='right',family='monospace')
>     axim.set_yticks(range(2))
>     
> axim.set_yticklabels(ytics,fontsize=15,family='fantasy')#,fontname='AR 
> PL SungtiL GB')
Why are you setting the font family to "monospace" and "fantasy" here?  
You need to set the font to something that will have the Chinese 
characters, for example, by uncommenting the lines that set sans-serif 
to "SimHei" above.  (That should work, but I don't have a Chinese font 
on my system to test with.)

Mike
>     plt.show()
>
> Thank you for your help,
>
> Benoit
>
>
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-- 
Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA