How to highlight a specific x value with matplotlib?

Question

I have the following code:

import matplotlib.pyplot as plt
x=0
xval=[]
yval=[]
for i in range(0,1000):
    x=i
    xval.append(x)
    y=1-(0.99**x)
    yval.append(y)
plt.axhline(0.5, color='r')
plt.axvline(69, color='r')
plt.plot(xval,yval)
plt.show()

I want to highlight the 69 on the x-axis like this:

Does anyone know how to show a specific x value on the axis?

I swear it isn't intentional!

Nathan Ditzel
– Nathan Ditzel

2022-02-22 18:47:31 +00:00
Commented Feb 22, 2022 at 18:47 — Nathan Ditzel
– Nathan Ditzel, Commented Feb 22, 2022 at 18:47

Benjamin Loison · Accepted Answer · 2023-06-05 10:39:29Z

3

You can use xticks:

import matplotlib.pyplot as plt
x=0
xval=[]
yval=[]
for i in range(0,1000):
    x=i
    xval.append(x)
    y=1-(0.99**x)
    yval.append(y)
plt.axhline(0.5, color='r')
plt.axvline(69, color='r')
plt.plot(xval,yval)
plt.xticks([69],["Nice"])
plt.show()

edited Jun 5, 2023 at 10:39

Benjamin Loison

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answered Feb 22, 2022 at 18:48

kpie

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2 Comments

Nathan Ditzel Over a year ago

Is there a way to make it show aswell as the default ticks?

kpie Over a year ago

plt.xticks([69]+range(0,1000,200),["Nice"]+range(0,1000,200))

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