Re: [Matplotlib-users] bug somewhere called by draw_lines

[Todd M. <jm...@st...>]

On Fri, 2004-05-21 at 10:38, John Hunter wrote:
> >>>>> "Andrew" == Andrew Straw <str...@as...> writes:
> 
>     Andrew> matplotlib 0.54 numarray 0.9 python 2.2.1 windows XP
> 
>     Andrew> if I use WXAgg or Agg, I get this:
> 
> Hmm, this is an I-can't-replicate-your-bugs-day.

I'm sorry I'm just catching up with this now.  I made an error building
matplotlib-0.54 for numarray on windows and the original version I sent
John basically doesn't work with numarray-0.9, just numarray-CVS.  The
nature of the error is that function calls from C extensions to numarray
are totally mismatched so all bets are off as to what extensions
actually wind up doing.

Sorry for the inconvenience,
Todd Miller


> Using numarray 0.8 or 0.9 with matplotlib on linux, setting numerix :
> numarray in my rc file, I have no troubles with your script on any of
> a variety of backends.  
> 
> Apparently the data coming from the numerix transform is complex.  The
> line that is failing for you is a tickline (as indicated by your
> traceback).  These lines are small so it would be interesting to see
> by printing them if they are complex before of after being handed off
> to the transformation.  In site-packages/matplotlib/lines.py on line
> 180, replace
> 
>         xt, yt = self._transform.numerix_x_y(x, y)
> 
> with
>         print 'before', x, y
>         xt, yt = self._transform.numerix_x_y(x, y)
>         print 'after', xt, yt
> 
> and let me know what happens.  If they are complex before then it
> appears complex data is being passed in; in this case try printing x,y
> in your script
> 
>   x = a*cos( theta )*exp(b*theta)
>   y = a*sin( theta )*exp(b*theta)
>   print 'x', x
>   print 'y', y
> 
> to see if you can find where these complexes are coming from.
> 
> Thanks,
> JDH
> 
> 
> 
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-- 
Todd Miller <jm...@st...>