I am trying to plot a series of functions on the same graphs. The code seems to run ok, but there is no picture coming coming out. just simply
<matplotlib.figure.Figure at 0xeafea58>
How can it be fixed?
Asked
Active
Viewed 4,110 times
2
-
I have tried switching backend .. `['TKAgg','GTKAgg','Qt4Agg','WXAgg']` but to no avail – Eric Enkele Apr 19 '17 at 19:36
-
I am running it using the Ipython console – Eric Enkele Apr 19 '17 at 19:41
-
What **is** the code? Be aware that this is the expected and desired behaviour, depending on your setup, so it cannot be "fixed". – ImportanceOfBeingErnest Apr 19 '17 at 19:42
-
I have just updated the function that plots the image. I image – Eric Enkele Apr 19 '17 at 19:53
-
did you switch the backend before or after you imported pyplot? – Paul H Apr 19 '17 at 20:33
-
@PaulH, I have updated the question so that you can see how I'm switching the backend. My friend is able to run it on his machine and I cannot. I have no idea why – Eric Enkele Apr 19 '17 at 20:43
-
`import matplotlib matplotlib.use("Agg")` – Eric Enkele Apr 19 '17 at 20:43
-
"Agg" is not an interactive backend, so no window will ever be displayed. Also pandas import pyplot, so you should import it *after* you select your backend. – Paul H Apr 19 '17 at 21:37
-
@PaulH, it is only displaying on python console not on Ipython. but there the markery is not showing. none of the recommended back-ends have any effects whatsoever – Eric Enkele Apr 19 '17 at 22:29
-
Create a [mcve] (at most ten lines), run it, take a screenshot, and update your question with it. – ImportanceOfBeingErnest Apr 19 '17 at 23:11
1 Answers
6
In the IPython console, the best way to make sure figures show up (without explicitly calling plt.show()) is to use %matplotlib mode. If matplotlib is installed correctly, it should automatically choose a suitable backend for your system.
For example:
In [1]: import matplotlib.pyplot as plt
In [2]: plt.plot([1, 2, 3]) # no plot shown!
Out[2]: [<matplotlib.lines.Line2D at 0x110eac898>]
In [3]: %matplotlib
Using matplotlib backend: MacOSX
In [4]: plt.plot([1, 2, 3]) # plot shown now
Out[4]: [<matplotlib.lines.Line2D at 0x112174400>]
The %matplotlib magic command only needs to be entered once per session.
jakevdp
- 77,104
- 11
- 125
- 160
-
Thanks @jakevdp .. yayiiii it's really a magic commend. it has directly selected a backend for me and it works like magic lol .. many thanks – Eric Enkele Apr 20 '17 at 15:24
-