CODEWITHSUNDEEP
pythonmatplotlib
Ioan Kats
Ioan Kats

Reputation: 521

Change color of specific ytick matplotlib

I have a dict with 200 keys and values that generates this graph.enter image description here

Also i compute the average of these values and plot that too. I would like the avg value to be the same color as the line. The code that i use is this :

with open('path_to_json/values.json', 'r') as outfile:
    a = json.load(outfile)

sum = 0
for k, v in a.items():
    sum += v

avg = sum / len(a.values())

fig, ax = plt.subplots(1,1)
p=ax.plot(list(a.keys()),list(a.values()))
p=ax.plot([0, len(a.values())], [avg, avg], "--")
yt = ax.get_yticks()
yt = np.append(yt, avg)
xticks = np.arange(0, len(a.values()), 10)
ax.yaxis.set_major_formatter(FormatStrFormatter('%.2f'))
ax.set_xticks(xticks)
ax.set_yticks(yt)
plt.show()

Upvotes: 4

Views: 469

Answers (1)

finefoot
finefoot

Reputation: 11224

Have a look at the overview for the Axes class, especially the "Ticks and tick labels" section: There's get_yticklabels and get_yticklines which return the objects which both have a set_color method.

Minimal example:

import matplotlib.pyplot as plt
import numpy as np

plt.plot([0, 1], [0, 1])
ax = plt.gca()
ax.set_yticks(np.append(ax.get_yticks(), 0.55))
ax.get_yticklabels()[-1].set_color("red")
ax.get_yticklines()[-2].set_color("red")
plt.show()

Figure 1

Upvotes: 3

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