I would like to define colors sections (blue: [0-15000], green: [15000-23000], red[23000,]) that should be used for y-values. Is it somehow possible in matplotlib?
1 Answer
You can color regions on a matplotlib plot using collections.BrokenBarHCollection:
import matplotlib.pyplot as plt import matplotlib.collections as collections fig = plt.figure() ax = fig.add_subplot(111) # Plot your own data here x = range(0, 30000) y = range(0, 30000) ax.plot(x, y) xrange = [(0, 30000)] yrange1 = (0, 15000) yrange2 = (15000, 23000) yrange3 = (23000, 30000) c1 = collections.BrokenBarHCollection(xrange, yrange1, facecolor='blue', alpha=0.5) c2 = collections.BrokenBarHCollection(xrange, yrange2, facecolor='green', alpha=0.5) c3 = collections.BrokenBarHCollection(xrange, yrange3, facecolor='red', alpha=0.5) ax.add_collection(c1) ax.add_collection(c2) ax.add_collection(c3) plt.show() 