Change tick text in matplotlib chart

Question

Assume if I wanted to change the tick label of '2' from Y axis to 'B' I used plt.yticsk(2,'B') but it seem to not work out

Is there any way to modify it? here's the code:

import matplotlib.pyplot as plt 

y = [-1,2,3,4,5,0,1]
x = [3,5,3,9,7,1,4]

colorsValue = []
for value in x:
    if value < 4:
        colorsValue.append('yellow')
    elif value >= 4:
        colorsValue.append('red')
    else:
        colorsValue.append('orange')

plt.barh(y, x, color = colorsValue)

plt.ylabel('Y')
plt.xlabel('X')

plt.yticks(2,'b')

plt.show()

Answer 1

you could find inspiration by checking how making what you expect here: https://www.python-graph-gallery.com/191-custom-axis-on-matplotlib-chart

The result might be as below:

import matplotlib.pyplot as plt

y = [-1,2,3,4,5,0,1]
x = [3,5,3,9,7,1,4]
yticks = ['-1','b','3','4','5','0','1']

colorsValue = []
for value in x:
    if value < 4:
        colorsValue.append('yellow')
    elif value >= 4:
        colorsValue.append('red')
    else:
        colorsValue.append('orange')

plt.barh(y, x, color = colorsValue)

plt.ylabel('Y')
plt.xlabel('X')

plt.yticks(y,yticks)

plt.show()

Is that the result you expected?