[Matplotlib-users] Can't seem to plot 2 horizontal lines on same plot
I don't know what dumb thing I'm going but I can't seem to plot 2 horizontal lines on the same plot!!! Why does this snippet give a *BLANK* plot when I run it? (Either line separately seems to be ok!?!?) import pylab x1 = pylab.arange(-10, 10, 0.01) x2 = pylab.arange( 0, 10, 0.01) f1 = [0 for e in x1] f2 = [1 for e in x2] pylab.show(pylab.plot(x1, f1, x2, f2)) Chris - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Can't seem to plot 2 horizontal lines on same plot
On Tuesday, 7 October 2008, [EMAIL PROTECTED] wrote: Why does this snippet give a *BLANK* plot when I run it? (Either line separately seems to be ok!?!?) import pylab x1 = pylab.arange(-10, 10, 0.01) x2 = pylab.arange( 0, 10, 0.01) f1 = [0 for e in x1] f2 = [1 for e in x2] pylab.show(pylab.plot(x1, f1, x2, f2)) The autoscaling feature sets the y limits to [0,1] which means that your lines are falling on the bottom and top x-axis which hides them. Rescaling the y-axis will make the lines visible, e.g. pylab.ylim(-1,2) Johann - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Can't seem to plot 2 horizontal lines on same plot
pylab.show() takes no arguments. The pylab interface is stateful, meaning you run a series of commands in order and it usually does the right thing, rather than passing the results of one function into another (in general). Did you not get an exception when you ran your example? The following works for me: import pylab x1 = pylab.arange(-10, 10, 0.01) x2 = pylab.arange( 0, 10, 0.01) f1 = [0 for e in x1] f2 = [1 for e in x2] pylab.plot(x1, f1, x2, f2) pylab.show() [EMAIL PROTECTED] wrote: I don't know what dumb thing I'm going but I can't seem to plot 2 horizontal lines on the same plot!!! Why does this snippet give a *BLANK* plot when I run it? (Either line separately seems to be ok!?!?) import pylab x1 = pylab.arange(-10, 10, 0.01) x2 = pylab.arange( 0, 10, 0.01) f1 = [0 for e in x1] f2 = [1 for e in x2] pylab.show(pylab.plot(x1, f1, x2, f2)) Chris - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Can't seem to plot 2 horizontal lines on same plot
On Tue, Oct 07, 2008 at 12:54:49PM +0200, Johann Rohwer wrote: The autoscaling feature sets the y limits to [0,1] which means that your lines are falling on the bottom and top x-axis which hides them. Rescaling the y-axis will make the lines visible, e.g. pylab.ylim(-1,2) Thank you very much. That did it. cs - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Can't seem to plot 2 horizontal lines on same plot
On Tue, Oct 07, 2008 at 08:19:39AM -0400, Michael Droettboom wrote: Did you not get an exception when you ran your example? The following works for me: import pylab x1 = pylab.arange(-10, 10, 0.01) x2 = pylab.arange( 0, 10, 0.01) f1 = [0 for e in x1] f2 = [1 for e in x2] pylab.plot(x1, f1, x2, f2) pylab.show() The lines aren't visible when I do it. No exceptions given. cs - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
