[Matplotlib-users] problem using matplotlib

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Just installed matplotlib and tried an example from the homepage:

Python 2.3.3 (#2, Mar 12 2004, 16:09:39)
[GCC 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>import matplotlib.matlab
Numeric import failed... trying numarray.
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/local/lib/python2.3/site-packages/matplotlib/matlab.py", line 
126, in ?
    from axes import Axes
  File "/usr/local/lib/python2.3/site-packages/matplotlib/axes.py", line 
244, in ?
    class Axes(Artist):
  File "/usr/local/lib/python2.3/site-packages/matplotlib/axes.py", line 
814, in Axe                                            s
    def imshow(self, X, cmap = Grayscale(256)):
  File "/usr/local/lib/python2.3/site-packages/matplotlib/colors.py", line 
213, in _                                            _init__
    Colormap.__init__(self, N, 'gray')
  File "/usr/local/lib/python2.3/site-packages/matplotlib/colors.py", line 
96, in __                                            init__
    self._make_red()
  File "/usr/local/lib/python2.3/site-packages/matplotlib/colors.py", line 
118, in _                                            make_red
    self.red = 1.0/self.N*arange(self.N, typecode=Float)
TypeError: arange() got an unexpected keyword argument 'typecode'

Why is this?
Any suggestions?

thanks,
marc

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