MATLAB: Is the histogram with the hist function giving multiple colored lines

Question

I am trying to create a histogram of my 100×10 matrix using the "hist" function and it is coming out with unexpected results with multiple colored lines. Why is this happening and how do I fix it?

Answer 1

It is recommended to use the "histogram" function instead of the "hist" function.

The "hist" function creates a histogram for each column of an input matrix and plots the histograms side-by-side in the same figure. This is why there are 10 colored lines for the 10 columns. The "histogram" function will treat the input matrix as a single tall vector and creates a single histogram.

For more information on the two functions and their differences, please see the following links:

https://www.mathworks.com/help/matlab/creating_plots/replace-discouraged-instances-of-hist-and-histc.html

https://www.mathworks.com/help/matlab/ref/hist.html

https://www.mathworks.com/help/matlab/ref/matlab.graphics.chart.primitive.histogram.html