python-matplotlibHow to plot heatmap with values
import matplotlib.pyplot as plt
data = [[0.8, 2.4, 2.5], [1.3, 1.2, 0.0], [0.1, 2.0, 0.0]]
fig, ax = plt.subplots()
im = ax.imshow(data)
for i in range(len(data)):
for j in range(len(data[0])):
text = ax.text(j, i, data[i][j])
plt.show()ctrl + cimport matplotlib.pyplot as pltloads Matplotlib module to use plotting capabilities | .subplots(creates set of charts on a single chart area |
.imshow(displays data as an image (used for heatmaps from 2d arrays) | for i in range(len(data))iterate through data rows |
for j in range(len(data[0]))iterate through data columns | .text(adds custom text to chart |
j, i, data[i][j]add data value as a text object using corresponding coordinates | .show()render chart in a separate window |
Usage example
import matplotlib.pyplot as plt
data = [[0.8, 2.4, 2.5], [1.3, 1.2, 0.0], [0.1, 2.0, 0.0]]
fig, ax = plt.subplots()
im = ax.imshow(data)
for i in range(len(data)):
for j in range(len(data[0])):
text = ax.text(j, i, data[i][j])
plt.show()