Re: [Matplotlib-users] contour question

[Nadezhda D. <den...@st...>]

It's a bug in the contour function. 

In axes.py, in function 'contour', put the line 

y, x = indices((jmax,imax), 'd')

in a condition, for example:

if x == None and y == None:
    y, x = indices((jmax,imax), 'd')


A permanent fix will go in CVS next week.

Nadia Dencheva

---- Original message ----
>Date: Sat, 01 Jan 2005 08:05:12 -0700
>From: Jeff Whitaker <js...@fa...>  
>Subject: [Matplotlib-users] contour question  
>To: "'matplotlib-users'" <mat...@li...>
>
>Hi all:
>
>I was experimenting with the contour demo and discovered that
the x and 
>y keyword arguments don't behave like I expect them to (i.e.
they don't 
>behave as they do in pcolor).
>
>For example:
>
>from pylab import *
>delta = 0.025
>x = y = arange(-3.0, 3.0, delta)
>X, Y = meshgrid(x, y)
>Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0)
>Z2 = bivariate_normal(X, Y, 1.5, 0.5, 1, 1)
>#levels, colls = contour(Z2-Z1, x=X,y=Y,levels=6,
>#                       linewidths=arange(.5, 4, .5),
>#                       colors=('r', 'green', 'blue', (1,1,0), 
>'#afeeee', 0.5),
>#                     origin='lower')
>pcolor(X,Y,Z2-Z1,shading='flat')
>show()
>
>plots the data with the x and y axes going from -3 to +3. 
Uncommenting 
>the contour call, the axes then are the same as the
dimensions of the Z 
>array, regardless of whether the x=X, y=Y keyword args are
given.  In 
>other words, contour seems to ignore the x,y keywords.  Am I
missing 
>something?
>
>-Jeff
>
>-- 
>Jeffrey S. Whitaker         Phone : (30the3)497-6313
>NOAA/OAR/CDC  R/CDC1        FAX   : (303)497-6449
>325 Broadway                Web   : http://www.cdc.noaa.gov/~jsw
>Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124
>
>
>
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