Add text data to specific scatter points that aren't known

Question

I have a scatter plot that looks like this:

I can use the following code to add text from a list to every scatter point:

# Add text names to the plot
for i, txt in enumerate(names):
    ax.annotate(txt, (x[i],y[i]), alpha=0.6)

However I only want to annotate the points that are past 2 on the x-axis and above 2 on the y-axis. How do I go about doing that? The Matplotlib documentation doesn't give me information on marking specific points unless I already know exactly which ones I want to edit (In this case, I don't).

Austin · Accepted Answer · 2018-02-11 03:51:32Z

1

Maybe you are asking to annotate all points after 2 on the x-axis and all points after 2 on the y-axis. If so, this is the way to do:

for i, txt in enumerate(names): 
    if x[i] > 2 or y[i] > 2: 
        # annotate only if a point is having either x > 2 or y > 2.
        ax.annotate(txt, (x[i], y[i]), alpha=0.6)

edited Feb 11, 2018 at 3:51

answered Feb 11, 2018 at 2:58

Austin

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1 Comment

tushariyer Over a year ago

Funnily enough that did it! I don't know why I didn't consider it myself. Thank you!

cherrypickerio · Accepted Answer · 2018-02-11 02:45:22Z

1

You could try checking the values of the points before annotating them.

For example

for i, txt in enumerate(names):
    if x[i] > 2 and y[i] > 2:
         ax.annotate(txt, (x[i], y[i]), alpha=0.6)

answered Feb 11, 2018 at 2:45

cherrypickerio

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3 Comments

tushariyer Over a year ago

I tried that, but it only gave me the names for the points to the top-right of the main 'cloud' of points, nowhere else

wjakobw Over a year ago

Perhaps you are misunderstanding each other in terms of order of operations in the phrase "points that are past 2 on the x-axis and above 2 on the y-axis". Try the condition x[i] > 2 or y[i] instead?

tushariyer Over a year ago

That did it, don't know why I didn't consider it myself, thanks!

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