Plot with matplotlib with real time updates without plt.pause

real_time_plotting.py

# draw the figure so the animations will work
import matplotlib.pyplot as plt
fig = plt.gcf()
fig.show()
fig.canvas.draw()

while True:
    # compute something
    plt.plot([1, 2, 3, 4, 5], [2, 1, 2, 1, 2]) # plot something
    
    # update canvas immediately
    plt.xlim([0, 10])
    plt.ylim([0, 10])
    plt.pause(0.01)
    fig.canvas.draw()

Nice. Thanks.

Hmm, does not work for me.
I use Qt5 backend.

This worked great for me, but I'm interested in plotting multiple figures. I tried creating new figures as follows but this didn't work:
Do you perhaps have any ideas?

fig = plt.gcf()
fig.show()
fig.canvas.draw()

fig1 = plt.gcf()
fig1.show()
fig1.canvas.draw()

while True:
# compute something
plt.plot([1], [2]) # plot something
fig.canvas.draw()

plt.plot(x,y)
fig1.canvas.draw()

Thanks

@vtonder Did you find a solution?

#plt.pause(0.01) # I ain't needed!!!

plt.pause is when you pull cursor coordinates and use zoom, save, home, etc. buttons. You disabled all those features.

also consider what your cpu's are doing with no plt.pause() vs 0.01 vs a full second of plot pause in that loop.

Doesn't work for me :/

Doesn't work for me :/

If it dosen't work for you try to add a style marker parameter like 'r+' for red cross, by default it can be invisible. For example to plot random numbers between 0 and 50.

x = random.randint(0,50)
y = random.randint(0,50)
plt.plot([x],[y],'r+')

It does not work

Guys I made an oscillscope code for live plot but now i want to make GUI of it using Pyqt5 but i am not getting how shall i do...do someone can help me out

This gist is not made for public consumption, I just occasionally make gists to remind me of something. I'm not supporting it, especially if the message is "it does not work".

This gist is not made for public consumption, I just occasionally make gists to remind me of something. I'm not supporting it, especially if the message is "it does not work".

Ok, but maybe you can fix it. It has no sence to post something that does not work. (Im not the only one who can't let it work)

It makes sense because it works for me (and some others), and this is a convenient place to store such things. I don't need somebody else to do my thinking for me, thank you.

I have no idea what setups people have, what versions, what OS, what backend, etc. And I certainly can't help when the entire message is "it does not work". Lazy efforts get zero response.

But again, I don't really care, this is for me only.

As you want, I wanted just to inform you