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Possible Duplicate:
matplotlib does not show my drawings although I call pyplot.show()
I'm a newbie to Matplotlib and have encountered this problem. I'm using a Ubuntu system. I started with Matplotlib 0.99 and realized that I really need the new feature of "triplot" in the newer versions. So I downloaded the newest version by
git clone git://github.com/matplotlib/matplotlib.git
and installed it. However, when I work with python interactively, pyplot.show() does not show me the figure I plot, nor did it responded with any error message. pyplot.show() did work in the old version of matplotlib 0.99.
To be more specific, I seemed to have no problem importing "matplotlib" or modules inside the package; I can generate pdf files of a bunch of figures, but I just can't have the figure show up by typing pyplot.show() at the end of my code. Can anyone help me? Thank you!
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Plotting from an IPython shell Using plt. show() in Matplotlib mode is not required.
It means if we are not using the show() function, it wouldn't show any plot. When we use the show() function in the non-interactive mode. That means when we write the code in the file it will show all the figures or plots and blocks until the plots have been closed.
Matplotlib is not a built-in module (it doesn't come with the default python installation) in Python, you need to install it explicitly using the pip installer and then use it. If you looking at how to install pip or if you are getting an error installing pip checkout pip: command not found to resolve the issue.
The clf() function in pyplot module of matplotlib library is used to clear the current figure.
I had the same issue and solved it by setting the appropriate display backend, following matplotlib does not show my drawings although I call pyplot.show()
There are two ways to achieve this:
1.Set the backend in your code, right after importing matplotlib:
import matplotlib
matplotlib.rcParams['backend'] = "Qt4Agg"
2.Or define your backend inside your matplotlibrc file (as given by matplotlib.matplotlib_fname()):
backend : Qt4Agg
More information here: http://matplotlib.sourceforge.net/users/customizing.html
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