contourhist(h, varargin)

Draw a histogram contour using the histogram object information (from Matlab's "histogram" function)
146 Downloads
Updated 27 Apr 2016

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Sometimes, overlapping histograms overwhelms our visual system. Due to the transparency of the histogram bars the resulting figure looks like having "aliasing" histograms. The function submitted here uses a contour approach. Just plot your overlapped histograms with no transparency (h.FaceAlpha =1) and call this function as many times as histograms you created (using the corresponding histogram object information). See the example. I hope you like it.
Example used for image above:
clear
close all
clc

A1 = randn(1,10^4)+3.8;
A2 = randn(1,10^4)+1.4;
A3 = randn(1,10^4);

figure
h1 = histogram(A1);
h1.NumBins = 24;
h1.BinWidth = 0.25;

hold on

h2 = histogram(A2);
h2.NumBins = 24;
h2.BinWidth = 0.25;

h3 = histogram(A3);
h3.NumBins = 24;
h3.BinWidth = 0.25;
hold off

figure
h1 = histogram(A1);
h1.NumBins = 24;
h1.BinWidth = 0.25;
h1.FaceAlpha =1;

hold on

h2 = histogram(A2);
h2.NumBins = 24;
h2.BinWidth = 0.25;
h2.FaceAlpha =1;

h3 = histogram(A3);
h3.NumBins = 24;
h3.BinWidth = 0.25;
h3.FaceAlpha =1;

hc1 = contourhist(h1, 'Color', [0 0 0], 'LineWidth', 6);
hc2 = contourhist(h2, 'Color', [0 0 0], 'LineWidth', 6);
hc3 = contourhist(h3, 'Color', [0 0 0], 'LineWidth', 6);
hold off

Cite As

Javier Lopez-Calderon (2024). contourhist(h, varargin) (https://www.mathworks.com/matlabcentral/fileexchange/56797-contourhist-h-varargin), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2015a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.0.0.0

Description uploaded
Example added.