I think I realised what I was doing wrong, I didn't have the imshow()
call beforehand in my program:
But using the code:
cax = fig.add_axes([0.85, 0.1, 0.075, 0.8])
a=outer(arange(0,1,0.01),ones(10))
imshow(a,aspect='auto',cmap=cm.gray,origin='lower')
I get a set of axes from 0 to 10 in the x direction and 0 to 100 in
y.How do I get rid of the x axis and scale the y axis from 0 to 1.
David
David Trethewey wrote:
> I've been trying to add a colorbar to my figure and have used the
> following code;
>
> cax = axes([0.85, 0.1, 0.075, 0.8])
> colorbar(cax=cax)
>
> as a template (from
> http://matplotlib.sourceforge.net/examples/pylab_examples/subplots_adjust.html)
>
> However I get an error:
>
> Traceback (most recent call last):
> File "cornwall2.py", line 640, in <module>
>
> draw_parishes(n_parishes,m_parishes,preoccratio_parishes,0,nthroot,scaling)
> File "cornwall2.py", line 112, in draw_parishes
> colorbar(cax=cax)
> File
> "c:\python25\lib\site-packages\matplotlib-0.98.3.0001-py2.5-win32.egg\matplotlib\pyplot.py",
>
> line 1295, in colorbar
> ret = gcf().colorbar(mappable, cax = cax, ax=ax, **kw)
> File
> "c:\python25\lib\site-packages\matplotlib-0.98.3.0001-py2.5-win32.egg\matplotlib\figure.py",
>
> line 977, in colorbar
> cb = cbar.Colorbar(cax, mappable, **kw)
> File
> "c:\python25\lib\site-packages\matplotlib-0.98.3.0001-py2.5-win32.egg\matplotlib\colorbar.py",
>
> line 595, in __init__
> mappable.autoscale_None() # Ensure mappable.norm.vmin, vmax
> AttributeError: 'NoneType' object has no attribute 'autoscale_None'
>
>
> How am I using colorbar incorrectly?
>
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