On 01/24/2011 02:49 PM, Lionel (Lee) Brooks 3rd wrote: > Hello Gentlepeople, > > I am plotting an integer array using: matplotlib.pyplot.plot(). > For my purposes it is imperative that the x-axis be explicitly defined. > I have tried to achieve this by using: matplotlib.pyplot.axis(v). > Where v is a list of integer values corresponding to the desired axes > limits [xmin, xmax, ymin, ymax]. > However, the x-axis that is displayed does not obey my explicit xmax > declaration; the value is rounded up. > > Here is the relevant portion of my code:
It is always better to provide a minimal but complete self-contained example illustrating the problem. > > fig = pyplot.figure(figsize=(16,8)) > ax1 = fig.add_axes([0.05, 0.15, 0.9, 0.8]) > v = [0, len(myintvector), 0, max(myintvector, key=int)] > ax1.axis(v) > ax1.plot(myintvector, 'r--') I am not seeing the problem when I try what I think is a minimal example; what version of mpl are you using? And have you tried calling axis after the call to plot? This might have been necessary in some earlier versions; I don't recall. (In ipython -pylab, my example was this: ax1 = gca() ax1.axis([0,9.9,0,9.9]) ax1.plot([1,2]) draw() in which no rounding occurs.) Eric > > The reason that I need the x-axis to match the length of my integer > vector is because I am also drawing a colorbar immediately below the > plot, the values of which describe the same integer vector. Therefore I > need the colorbar coordinates to match the x-axis coordinates of my plot. > > I hope that I have described my issue coherently. Please be kind (N00b > alert). > Any help is greatly appreciated! > > Sincerely, > Lionel 'Lee' Brooks 3rd > Dartmouth Genetics Grad Student ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
