remove part of a plot in matplotlib

Question

I'm trying to find a way to hide part of a line in a matplotlib plot. Say I have a line with x values from 0 to 100 and I want to hide a portion of the line form x = 20 to x = 30. Is there any efficient way to do this? Thanks!

plot the parts 0-20 and 30-100 separately

wim
– wim

2016-05-12 04:34:30 +00:00
Commented May 12, 2016 at 4:34 — wim
– wim, Commented May 12, 2016 at 4:34

Bart · Accepted Answer · 2016-05-12 07:39:11Z

3

You could mask part of the array, then matplotlib doesn't plot it:

import numpy as np
import matplotlib.pylab as pl

x = np.arange(100)
y = np.cos(x/10.)

pl.figure()
pl.subplot(121)
pl.plot(x, y)

# Mask part of array
y2 = np.ma.masked_where(((x>20)&(x<30)), y) 

pl.subplot(122)
pl.plot(x, y2)

answered May 12, 2016 at 7:39

Bart

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