Matplotlib fails and hangs when plotting in interactive mode

Question

I am getting a problem with my matplotlib library on MacOS High Sierra.

Here is my super simple code.

plt.ion()
plt.plot(x,y)
plt.show()

The python symbol appears on the dash board but the window cannot be found anywhere.

if I don't use ion() I can get one plot at a time.

JE_Muc · Accepted Answer · 2018-05-23 14:12:23Z

3

plt.ion() seems to be bugged. Try the following workaround:

plt.ion()
plt.plot(x,y)
plt.pause(0.0001)
plt.show()

If this still does not work, try replacing the last line with:

plt.show(block=True)

answered May 23, 2018 at 14:12

JE_Muc

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1 Comment

The part that made it work was addition of plt.show(block = True)