How can I plot a 3D Histogram with one axis of categorical data?

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Aseer Chowdhury
Aseer Chowdhury 2020-7-13
回答： Shubham Rawat 2020-7-22
Hi I'm trying to create a 3D histogram using hist3 and would like the following axes:
  1. x-axis: categorical data eg. the type of modification to the set-up
  2. y-axis: output data eg. time
  3. z-axis: frequency.
I understand how to get the y and z axis conditions, but I am unsure of how to get categorical data on one of the axes in a 3d plot.

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Shubham Rawat
Shubham Rawat 2020-7-22
Hi Aseer,
For the hist3 function the user should need a 2D Matrix in which 1st column is x value, and 2nd column is y value. Then the function plots number of occurrences of the pairs x, y as the z parameter.
The 2D matrix has to be numeric in data in this function, for this you have to convert categories into numeric data.
https://www.mathworks.com/matlabcentral/answers/264383-convert-categorical-to-numeric

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