Michael Droettboom, on 2011-03-29 10:12, wrote:
> On 03/29/2011 09:08 AM, xyz wrote:
> > Hi,
> > X and Y values are stored in a dict whereas X is the key and Y is the
> > value in the following code:
> >
> > import matplotlib.pyplot as plt
> >
> > data = {4: 3, 5: 4, 6: 5, 7: 4, 8: 5}
> >
> > print data
> > for i in sorted(data.keys()):
> > print i
> >
> > How is possible to use plot with a dict in order to get a similar
> > picture like this
> > http://matplotlib.sourceforge.net/_images/invert_axes.png .
> In this case, you should be able to use:
>
> plt.plot(data.items())For me, that line produces two lines with the abscissa going from 0 to 4. In other words, plt.plot(data.items()) ends up being equivalent to plt.plot(data.values());plt.plot(data.keys()) I think what xyz wants is this: x,y = zip(*sorted(data.items())) plt.plot(x,y) I think of the * in front of arguments to zip as being the pull tab or slider of the zipper (since it's at the top, you'll be pulling it down, or unzipping): see http://docs.python.org/library/functions.html#zip best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
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