CODEWITHSUNDEEP
pythonmatplotlib
Phys
Phys

Reputation: 518

Python: wrong bin number in matplotlib histogram

I am trying to plot a simple histogram with matplotlib with the following code:

     n, bins, patches = plt.hist(theta_deg[:,:],  bins=36, rwidth=1, facecolor='green', alpha=0.75)

Histogram

The parameter rwidth deletes the white spaces on each side of the bars. theta_deg is a (1025,70) matrix. The result is a histogram with a much higher number of bins than the 36 I want to get, as shown in the image. I would like to have all the 1025*70 points within 36 bars only. Many thanks for any help.

Upvotes: 0

Views: 588

Answers (1)

ImportanceOfBeingErnest
ImportanceOfBeingErnest

Reputation: 339112

You're plotting several histograms, one for each column of the array and each with 36 bins. Those are stiched together and due to the same color being used appear as one single histogram.

Remove rwidth and flatten your array:

n, bins, patches = plt.hist(theta_deg.flatten(), bins=36, facecolor='green', alpha=0.75)

Upvotes: 2

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