On Thu, Feb 25, 2010 at 8:56 AM, afancy <grou...@gmail.com> wrote:

> Hi,
>
> I have some difficulty to use the log scale on bar chart. Could anybody
> help me, thanks in advace.
>
> Regards,
> afancy
>
> from matplotlib.font_manager import FontProperties
> data=((0.014, 0.512,   0.015, 0.161,  1.177, 6.793,  0.089,   1.495,
> 25.65,   0.014,  0.045,  0.052,  5.423),
>       (0.529, 0.612,   0.855, 0.178,  1.432, 6.43,   41.311,  1.62,
> 71.012,  1.59,   0.271,  0.066,  4.721),
>       (0.493, 834.351, 0.156, 743.193,0.428, 84.101, 1058.062,8.652,
> 1023,    0.168,  7.101,  8.135,  152.646),
>       (118.90,2035.35, 89.35, 15.402, 10.856,110.049,3024.42,
> 8054.74,5214.36, 5.539,  11.539, 515.632,150.411)
>       )
>
> rects=[]
> xticks=[]
> patterns = ('/','x', '\\','o')
> colors=['r','b','y', 'g']
>
> fig = figure()
> ax=fig.add_subplot(111)
>
> ax.set_yscale('log')
> ax.set_ylim(1e-4, 1e5)
> width=0.1
>
> for q in range(13):
>     for n in range(4):
>         l = q+width*n
>         h = data[n][q]
>         w =  width
>         rect, = ax.bar(l, h, w, bottom=0, fill=False, hatch=patterns[n],
> log=True)
>
>
> draw()
>
>
Try without bottom=0 in ax.bar. Also you don't need ax.set_yscale('log') in
the first place. How did you get something seen on your screen without
show() in the end?


>
>
>
>
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-- 
Gökhan
------------------------------------------------------------------------------
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