How to plot a line with two colors in parallel using matplotlib-CodePudding

I want to have a single line that has two colors in parallel, e.g. for green and red:

I have achieved this as follows:

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0,1,100)
y = np.exp(x)

plt.plot(x,y,color='r')
plt.plot(x,y 0.01,color='g')
plt.show()

The problem is that when I zoom in the lines start to separate. Is there anyway to plot a single line that has two parallel colors?

CodePudding user response：

Use linewidth argument:

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0,1,100)
y = np.exp(x)

plt.plot(x,y,color='r', linewidth=4)
plt.plot(x,y 0.01,color='g', linewidth=4)
plt.show()

CodePudding user response：

Are you wanting only line or is OK another shape of lines like below:

Format Strings A format string consists of a part for color, marker and line:: fmt = '[marker][line][color]'

'-' solid line style '--' dashed line style '-.' dash-dot line style ':' dotted line style

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0,1,100)
y = np.exp(x)

fig, axe = plt.subplots(figsize=(15,10))
axe.plot(x,y,'-.r', linewidth=3)
axe.plot(x,y 0.015,':g', linewidth=3)
plt.show()

Output: