Python: Is it possible to change line color in a plot if exceeds a specific range?

Question

Is it possible to change the line color in a plot when values exceeds a certain y value? Example:

import numpy as np
import matplotlib.pyplot as plt
a = np.a         


        

Answer 1

I don't know wether there is a built-in function in matplolib. But you could convert your numpy array into a pandas series and then use the plot function in combination with boolean selection/masking.

import numpy as np
import pandas as pd

a = np.array([1,2,17,20,16,3,5,4])
aPandas = pd.Series(a)
aPandas.plot()
aPandas[aPandas > 15].plot(color = 'red')