[SciPy-user] drawing time

[Johannes Broedel]

Hallo,

thanks for the short progrma, trying ade my computer producing the 
following message (IPython):

In [7]: run sciptest.py
---------------------------------------------------------------------------
MemoryError                               Traceback (most recent call last)

/home/jbroedel/python/graphtest/sciptest.py
      5 xplt.hold('on')
      6 for xval in x:
      7       yval = sin(xval / 4)
----> 8       xplt.plot(xval, yval, 'x')
      9       xplt.pause(100)

/home/python/PYTHON/lib/python2.2/site-packages/scipy/xplt/Mplot.py in 
plot(x, *args, **keywds)
    480             y = scipy.real(y)
    481         y = where(scipy.isfinite(y),y,0)
--> 482         
gist.plg(y,x,type=thetype,color=thecolor,marker=themarker,marks=tomark,width=linewidth)
    483
    484         nowplotting = nowplotting + 1

MemoryError:
WARNING: Failure executing file: <sciptest.py>

The real problem I had was with the following program:


#!/usr/bin/env python

from Numeric import *
from scipy.xplt import *


def standard_map(x_cor,y_cor,kappa):
    """provide one interate of the inital conditions x_cor,y_cor
       for the standard map with parameter kappa.
    """
    y_cor_new=(y_cor-kappa*sin(2.0*pi*x_cor) )% 1
    x_cor_new=(x_cor+y_cor_new )   % 1
 
    return(x_cor_new,y_cor_new)



if __name__ == '__main__':
    window()             # initialize plotting
    limits(0.0,1.0,0.0,1.0)
    x,y=0.5,0.1          # initial (x,y)
    k=1.1/(2.0*pi)       # parameter
    animate(0)
    iterations=1000
    while 1:             # iterate initial conditions
        for i in range(iterations):       
            (x,y)=standard_map(x,y,k)
            plg(array([y]),array([x]),type="none",marks=1,marker=1)
           
        ch=mouse(-1,0,"press mouse button")
      
        x,y=ch[0],ch[1]
        if(ch[9]==3): break  # mouse key 3
        plg(array([y]),array([x]))


Sorry, I didn't manage to try the other solutions you proposed, tomorrow 
I will, thanks for now, a solution for the small program would be very 
nice..
Tahnk you in advance, Johannes