Colorbar Tick Etiquetado

Produce etiquetas personalizadas para una barra de colores.

Contribución de Scott Sinclair

import matplotlib.pyplot as plt
import numpy as np
from matplotlib import cm
from numpy.random import randn


# Fixing random state for reproducibility
np.random.seed(19680801)

Hacer gráfico con barra de color vertical (predeterminada)

fig, ax = plt.subplots()

data = np.clip(randn(250, 250), -1, 1)

cax = ax.imshow(data, cmap=cm.coolwarm)
ax.set_title('Gaussian noise with vertical colorbar')

# Add colorbar, make sure to specify tick locations to match desired ticklabels
cbar = fig.colorbar(cax, ticks=[-1, 0, 1])
cbar.ax.set_yticklabels(['< -1', '0', '> 1'])  # vertically oriented colorbar

[Text(1, -1, '< -1'), Text(1, 0, '0'), Text(1, 1, '> 1')]

Hacer trama con barra de colores horizontal

fig, ax = plt.subplots()

data = np.clip(randn(250, 250), -1, 1)

cax = ax.imshow(data, cmap=cm.afmhot)
ax.set_title('Gaussian noise with horizontal colorbar')

cbar = fig.colorbar(cax, ticks=[-1, 0, 1], orientation='horizontal')
cbar.ax.set_xticklabels(['Low', 'Medium', 'High'])  # horizontal colorbar

plt.show()