Want to plot a matrix as a 3D histogram or bar chart.
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I have a matrix (A) of count values. It counts the number of times event (x,y) occurs during a process, where x & y are integer metrics with pre-defined, non-equal ranges (thus A is not square). That is, every time event (9,10) occurs, the accumulator (counter) array is incremented: A(9,10)=A(9,10)+1. I want to plot out the matrix A as a histogram (or bar chart) to examine and analyze the distribution of events. I am aware of bar3 and some MATLAB histogram plotting scripts but I don't see how to make them work, for this application. (I did search the download section here but didn't find what I want.)
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José-Luis
2016-9-15
Could you show an example of what you want and how exactly bar3() doesn' t work?
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Image Analyst
2016-9-15
With a size of 128 by 1024, you might be better off using surf() than bar3(), or simply viewing it as an image instead of a 2.5-D rendering (a 3-D rendering of your 2-D array onto your 2-D flat screen monitor).
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Steven Lord
2016-9-15
As of release R2016b, the histogram and histogram2 functions can create a histogram using either raw data to be binned or precomputed bin counts. See the Release Notes for more information.
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