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Heatmap Slicer

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%matplotlib widget
import matplotlib.pyplot as plt
import numpy as np

from mpl_interactions import heatmap_slicer

Comparing heatmaps

Sometimes I find myself wanting to compare horizontal or vertical slices across two different heatmaps with the same shape. The function heatmap_slicer makes this easy and should work for any number of heatmaps from 1 to many (likely not all the way \(\inf\) though).

The most important options to play with are slices = {'both', 'vertical', 'horizontal'}, and interaction_type = {'move', 'click'}

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x = np.linspace(0, np.pi, 100)
y = np.linspace(0, 10, 200)
X, Y = np.meshgrid(x, y)
data1 = np.sin(X) + np.exp(np.cos(Y))
data2 = np.cos(X) + np.exp(np.sin(Y))
fig, axes = heatmap_slicer(
    (data1, data2),
    heatmap_names=("dataset 1", "dataset 2"),
    labels=("Some wild X variable", "Y axis"),
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