[SciPy-User] Dimensions of x and y are incompatible

[Pierre GM]

On Aug 3, 2009, at 5:26 PM, Omer Khalid wrote:

> Hi,

Omer,
You do realize this is the Scipy mailing list, right ? You should ask  
matplotlib related questions to the matplotlib mailing list:
matplotlib-users at lists.sourceforge.net

Anyhow:
> "Dimensions of x and y are incompatible"
means what it means: you're trying to plot y (size 11) with x of size  
(110). That won't do: your x and y must have the same size (else, what  
happens to the extras x or y ?)
Moreover, you may want to use np.linspace instead of np.arange for that:
np.linspace(0,1,11) gives you 11 points regularly spaced between 0 and  
1.


> I am trying to plot two curves on a same graph. The two input  
> datasets are xdata, ydata and they range between (0.01, 1]  for  
> xdata and (0.1, 1] for ydata.
>
> I am constantly getting this error when plotting "Dimensions of x  
> and y are incompatible"
>
>                 plt.figure()
>                 xdata= array(xd)
>                 ydata = array(xd)
>
>                 N=len(xdata)
>                 print "N: %d" % (N)
>                 x=arange(0.0, 1.0+0.01, 0.01)
>                 M=len(ydata)
>                 print "M: %d" % (M)
>                 y=arange(0.0, 1.0+0.1, 0.1)
>                 plt.plot(x,xdata,'r')
>                 plt.plot(y,ydata,'b')
>                 plot.legend((xl,yl))
>                 plt.grid(True)
>                 plt.title(title)
>                 plt.xlabel('Value Ratio')
>                 plt.ylabel('Simulation Time Unit')
>                 pdf_name = '%s-%s.pdf' % (str(filename),strftime("%m 
> %d-%M-%S"))
>                 pwd = os.getcwd()
>                 path = os.path.join(pwd, exp, pdf_name)
>                 plt.savefig(path)
>
> I have also tried:
> x=arange(1,N)
> y=arange(1,M)
>
> But it didn't work. Any help would be much appreciated.
>
> Thanks,
> Omer
>
>
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