On 2012/10/03 4:24 AM, Charleux Ludovic wrote: > Hello, > > I want to plot multiple lines using matplotlib.pyplot.plot using the > None separator: when i zoom or plot lines that go far away from the axis > limits, they their direction is changed. I encounter a bug shown by the > folowing code: > > import matplotlib.pyplot as plt > > # Single line > x = [0., 1., 1., 0., 0.] > y = [0., 0., 1., 1., 0.] > > # Multiple lines separated by None > x2 = [0., 1., None ,1., 0.] > y2 = [0., 0., None, 1., 1.]
I'm surprised this works at all. I don't think we have ever intentionally supported object arrays, which is what you get when you take np.array() of a list with a None in it. If you want to use this method to make a set of line segments, use np.nan in place of None. Eric > > # Let's plot > fig = plt.figure(0) > plt.clf() > ax = fig.add_subplot(121) > plt.title('No zoom') > plt.xlim([-1, 2]) > plt.ylim([-1, 2]) > plt.plot(x,y, 'bo-', label = 'This is ok') > plt.plot(x2,y2, 'ro-', label = 'This is not ok') > plt.legend() > ax = fig.add_subplot(122) > plt.title('With zoom one a corner') > plt.xlim([-.05, .1]) > plt.ylim([.95, 1.05]) > plt.plot(x,y, 'bo-', label = 'This is ok') > plt.plot(x2,y2, 'ro-', label = 'This is not ok') > plt.legend() > plt.show() > > I tried several approaches to solve the problem but never succeeded. I > don't wich to use 2D arrays or LineCollections because this solution is > faster and allows the declaration of all lines with a single label and > color. Has anyone any idea ? > > Regards. > > > > > ------------------------------------------------------------------------------ > Don't let slow site performance ruin your business. Deploy New Relic APM > Deploy New Relic app performance management and know exactly > what is happening inside your Ruby, Python, PHP, Java, and .NET app > Try New Relic at no cost today and get our sweet Data Nerd shirt too! > http://p.sf.net/sfu/newrelic-dev2dev > > > > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users