How to add extra information points to a Matplotlib plot?

Question

So I want to plot a Matplotlib plot x versus y, but now at certain x points I want to add a dot or a small circle with another value z written beside it.

Basically the curve depends on 3 variables and I want to plot it with 2 variables but at certain points I want to add a circle or a dot telling us about the z at that point. Also, note there will be multiple plots, thus the z circle or dot has to be of the same colour.

How can I do this?

What is the problem? What is the question? What did you try so far? — ImportanceOfBeingErnest, Jun 28 '19 at 21:31
@ImportanceOfBeingErnest the question is in the title..ok modified the body — DuttaA, Jun 28 '19 at 21:32
How in the world is this a broad question? Just a simple problem of adding some labels — DuttaA, Jun 28 '19 at 21:44
https://stackoverflow.com/a/46028674/6361531 Look at this solution to see if this helps. — Scott Boston, Jul 07 '19 at 00:28

score 3 · Answer 1 · answered Jul 06 '19 at 23:58

For the labelling, you can use matplotlib.pyplot.annotate("text", (x, y) ) to annotate a specific point (x,y) with text.

Please check out this resource for definition & examples: https://matplotlib.org/api/_as_gen/matplotlib.pyplot.annotate.html#examples-using-matplotlib-pyplot-annotate

To mark certain points, you need to use the markevery argument in matplotlib.pyplot.plot(). You can also customize the look of the marker with the marker argument.

Please check out this excellent answer for more info: How to mark specific data points in matplotlib graph

I hope all of this was helpful!

How to add extra information points to a Matplotlib plot?

1 Answers1