Todd,
I think you are missing a "plt.show()" at the end of your code. matplotlib,
by default on most systems, does not show a plot until you tell it to using
plt.show() command.
See if that works,
Ben Root
On Mon, Jun 7, 2010 at 7:57 AM, Todd V Rovito <rovit...@gmail.com> wrote:
> Greetings,
> I just installed Python 2.6 (python.org), Numpy 1.4.1, and Matplotlib
> 0.99.1.2 all on Mac OS X 10.6 in an attempt to learn about scientific
> programming in python. Go easy on me since I am a begginer. The Python and
> Numpy seem to be working correctly. I can get matplotlib to make plots but
> I can't get it to show images. I tried the stinkbug example in
> the Matplotlib users guide documentation with no success. Errors are _NOT_
> generated but neither are any results on the screen. The imread command
> produces a float32 matrix that contains all 1. values so I tried creating my
> own uint8 matrix with a diagnoal line. My code is below. Thanks for any
> help you can provide.
>
>
>
> # -*- coding: utf-8 -*-
> from numpy import *
> import matplotlib.pyplot as plt
> import matplotlib.image as mpimg
>
> print "Numpy version: " + __version__
> a = array([10,20,30,40])
> print "result of a"
> print a
>
> b = arange(4)
> print "result of b"
> print b
>
> c = linspace(-pi, pi, 30)
> print "result of c"
> print c
>
> # this plot code works
> print "plot c"
> plt.plot(c)
> plt.ylabel("-pi to + pi")
> plt.xlabel("value of c")
> plt.show()
>
> # this image processing code does not work
> print "doing image processing stuff"
> # img=mpimg.imread("/Users/rovitotv/Desktop/stinkbug.png") # this does not
> work
> img = zeros((10, 10), dtype=uint8)
> for i in range(10):
> img[i,i] = 255;
>
> plt.imshow(img)
> print "data type of img:"
> print img.dtype
> print "size of img:" + str(img.size)
> print img
>
>
>
>
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