Thread: [Matplotlib-users] Integer to colormap color value

I have something like (only the important bits of code): 

    cmap = mpl.cm.jet  ##I set colomap to 'jet'
    norm = mpl.colors.Normalize(vmin=5, vmax=15)

    exampleInt = 7
    ##Here i would need a color value of 7 (in 5-15 range of jet colormap)
    poly = Polygon(seg,facecolor=exampleInt(as color value))  
    ax.add_patch(poly)



Thank you for your help!
-- 
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On Thu, Jan 8, 2009 at 3:53 PM, AlsCdz <cad...@si...> wrote:
>
> I have something like (only the important bits of code):
>
>    cmap = mpl.cm.jet  ##I set colomap to 'jet'
>    norm = mpl.colors.Normalize(vmin=5, vmax=15)
>
>    exampleInt = 7
>    ##Here i would need a color value of 7 (in 5-15 range of jet colormap)
>    poly = Polygon(seg,facecolor=exampleInt(as color value))
>    ax.add_patch(poly)

Almost there!In [9]: cmap = mpl.cm.jet

In [10]: norm = mpl.colors.Normalize(vmin=5, vmax=15)

In [11]: cmap(norm(7))
Out[11]: (0.0, 0.29999999999999999, 1.0, 1.0)

Unless I'm mistaken the following should give you the results you're 
looking for:

    cmap = mpl.cm.jet  ##I set colomap to 'jet'
    norm = mpl.colors.Normalize(vmin=5, vmax=15)

    exampleInt = 7
    exampleColor = cmap( norm(7) )

    poly = Polygon(seq,facecolor=exampleColor)
    ax.add_path(poly)


Cheers,

    -Jonathan Helmus

AlsCdz wrote:
> I have something like (only the important bits of code): 
>
>     cmap = mpl.cm.jet  ##I set colomap to 'jet'
>     norm = mpl.colors.Normalize(vmin=5, vmax=15)
>
>     exampleInt = 7
>     ##Here i would need a color value of 7 (in 5-15 range of jet colormap)
>     poly = Polygon(seg,facecolor=exampleInt(as color value))  
>     ax.add_patch(poly)
>
>
>
> Thank you for your help!
>