On Thu, Dec 13, 2012 at 10:45 AM, Claus <clausena...@gmail.com> wrote:
> Hi,
>
> I am trying to plot a colorbar next to each subplot in a figure. In the
> following example, I create two figures. In the second figure, I try to add
> the colorbars. Is there a way to show the colorbar next to each subplot.
> The way I did it, all the colorbars appear next to the last subplot, take
> away space from it, and all are plotted using the "jet" colormap.
> Unfortunately, I am not sure how to do this better, and would appreciate
> hints.
>
>
> import numpy as np
> import matplotlib.pylab as plt
>
> def main():
>
> # four subplots, no colorbar, so far so good
> f, axarr = plt.subplots(2, 2)
> axarr[0, 0].imshow(np.random.rand(5,5)*10)
> axarr[0, 1].imshow(np.random.rand(5,5))
> axarr[1, 0].imshow(np.random.rand(5,5)*100)
> axarr[1, 1].imshow(np.random.rand(5,5)*1000)
> plt.show()
>
> # four subplots, four colorbars
> f, axarr = plt.subplots(2, 2)
> a = axarr[0, 0].imshow(np.random.rand(5,5)*10)
> cbar1 = f.colorbar(a, cmap='jet')
> b = axarr[0, 1].imshow(np.random.rand(5,5))
> cbar2 = f.colorbar(b, cmap='Reds')
> c = axarr[1, 0].imshow(np.random.rand(5,5)*100)
> cbar2 = f.colorbar(c, cmap='Blues')
> d = axarr[1, 1].imshow(np.random.rand(5,5)*1000)
> cbar2 = f.colorbar(d, cmap='Greens')
> plt.show()
>
> if __name__ == '__main__':
> main()
>
I think you are looking for the AxesGrid object from the
mpl_toolkits.axes_grid1 module:
http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html#axes-grid1
Ben Root
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