CODEWITHSUNDEEP
pythonmatplotlibplotheatmapbinning
logical x 2
logical x 2

Reputation: 321

Matplotlib: How to increase size of bin in Heatmap (hexbin)?

Matplotlib: How can I set the size of the bins created using hexbin? The problem i have is that the bins are just much too small so that the graphic looks somehow weird.

Upvotes: 1

Views: 3171

Answers (1)

wwii
wwii

Reputation: 23743

Using pylab_examples example code: hexbin_demo.py, you can easily play around with all of the optional arguments to see how they affect the same dataset. Here is what gridsize does:

enter image description here

I just copy and pasted the code from the demo (including the data creation part) then made subplots with different values for the same parameter like this

plt.subplots_adjust(hspace=0.5)
plt.subplot(132)
plt.hexbin(x, y, cmap=plt.cm.YlOrRd_r)
plt.axis([xmin, xmax, ymin, ymax])
plt.title("Gridsize 100 (default)")
cb = plt.colorbar()
cb.set_label('counts')

plt.subplot(133)
plt.hexbin(x, y, cmap=plt.cm.YlOrRd_r, gridsize = 200)
plt.axis([xmin, xmax, ymin, ymax])
plt.title("Gridsize 200")
cb = plt.colorbar()
cb.set_label('counts')

plt.subplot(131)
plt.hexbin(x, y, cmap=plt.cm.YlOrRd_r, gridsize = 10)
plt.axis([xmin, xmax, ymin, ymax])
plt.title("Gridsize 10")
cb = plt.colorbar()
cb.set_label('counts')

plt.show()
plt.close()

Upvotes: 3

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