Matplotlib Tutorial 16 - Live graphs

In this Matplotlib tutorial, we're going to cover how to create live updating graphs that can update their plots live as the data-source updates. You may want to use this for something like graphing live stock pricing data, or maybe you have a sensor connected to your computer, and you want to display the live sensor data. To do this, we use the animation functionality with Matplotlib.

[fireraisr]

I'm really loving all your videos. The speed is awesome. I don't mind pausing to read the code in some places because it means we blaze past the concepts I'm already familiar with. Great series.

[Jimming]

building a chatbot that displays data to the host and came across this when looking to visualize the data it collects. Excellent explanation! I really appreciate you going into detail for each component to explain *why* it gets added to the code. Thanks!

[happyhippr]

its awesome to have an expert explain the simple stuff. cant thank you enough for the time you put into this series

[davidkaplan]

I was having a weird issue where the Y axis wasn't numbered in order. I changed the code to xs.append(float(x)) and ys.append(float(y)). This seemed to fix the issue.

[ralphcastro]

Interesting videos you publish. I have been following you as I go through my quest in learning python. You always give a good point of view slightly different of what I have found on other tutorials.
Today I make a comment cause I was just seeing this tutorial of live plotting and I saw that with my data I saw that my x-axis the data was not taken in ascending order instead was (1, 10, 2, 3, 4...) when you passed to the 2 digit number.
What I did is that I just added the int() to each append of the "xs" and "ys" and this solved the issue.

Thanks again for your videos dude.

[loudborker]

5:04 where does the variable "i" get called in the def animate (i): function?

[BrowFinGarf]

You really make this stuff understandable. Reading documentation can get pretty daunting. Thanks!

[saadahmed]

Never thought this would be so easy! Thanks Harrison. Even though every now and then some idiotic...xd ... error pops up because of my own shortcomings but no worries I think these things happen when you are on a learning curve. Thanks again.

[damlurker]

loading data from a sensor is exactly what i need this for :)

[vampcj]

For those of you guys who have the problem of no updating fig with txt file. Just remember to have '%matplotlib notebook' at the very beginning of the jupyter notebook file, before 'import matplotlib.pyplot as plt'

[sriti_hikari]

Now that is what I call a real "INFLUENCER"

[markd]

hi - running this in jupyter notebook, the plot does not live update when the example data file is added to. i need to manually re-run the code to re-plot the chart which then shows the new points in the example data file. How to automate?

[MarhabanBek]

God bless you, You are great, Thank you very much for simplifying this

[cosmosmusic]

i have 1 problemwith this if i wanted to plot a continuous stream of data this doesnt really work

[vikramtheone]

I love the way you explain. Thank you for a great a tutorial.

[fisicawaheed]

Hi
i was trying to write this code for learning purposes but i stuck with an error, which says:

AttributeError: 'builtin_function_or_method' object has no attribute 'split'

so i need help to figure this out
i am using Debian 10 and atom as my editor

[meins]

Hi! Thanks for your great tutorials!
Is it possible to start and stop the animation function, by pressing a button for example?

[BentoMontenegro]

Really, really clear. Best material on the subject! Thank you!

[gileswhiting]

Is there a reason why I cannot get this to happen in either Spider or Jupyter Notebook GUIs? Any help on this would be appreciated.

[ReasonableTechReviewer]

I seem to have a problem... The case is that the plt() function stops all code that comes after, after plt() has been executed. I have put both the write() and animate() functions in a while-loop, but the problem is that the while-loop wont't be executed at all, as the plt() (places before the while-loop) function prevents it from doing so. Is there a solution to this?