def matshow(*args,**kw):
"""Display an array as a matrix in a new figure window.
Matshow simply is not designed to work with subplots; it is a wrapper
around imshow() that creates a new figure. You should be able to do
what you want by using imshow() directly in place of matshow with
something like this:
nr, nc = Z.shape
extent = [-0.5, nc-0.5, nr-0.5, -0.5]
imshow(Z, extent=extent, origin='upper')
This should display the matrix with the same orientation as it has when
printed, and with the axis ticks matching the indices.
Change or add kwargs to imshow as needed. aspect is 'equal' by default,
which may or may not be what you want, but it is part of what matshow
tries to do if the matrix aspect ratio is not too far from unity.
Eric
TheSaint 555 wrote:
> I am trying to create subplots with matshow. However, my code seems to be
> displaying only the last matshow image and two blank plots in separate
> figures. Can someone tell me what I am doing wrong?
>
> from matplotlib.pylab import *
>
> def SliceMat(N, i):
> slice = zeros( (N, N) )
> for j in range(N):
> for k in range(N):
> val = 0 # black
> if(i>j>k and ((i+j+k)%3==1)):
> val=1 # red
> if(j>k>i and ((i+j+k)%3==2)):
> val=2 # yellow
> if (k>i>j and ((i+j+k)%3==0)):
> val=3 # white
> slice[j,k] = val
> return slice
>
> N=8
>
>
> subplot(121)
> slice = SliceMat(N, 2)
> matshow(slice, cmap=cm.hot, origin='lower')
>
>
>
> subplot(122)
> slice = SliceMat(N, 5)
> matshow(slice, cmap=cm.hot, origin='lower')
>
> show()
>
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