Plot histograms from a loop

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msij 2016-3-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/270958-plot-histograms-from-a-loop

评论： Giorgio Gerini Romagnoli 2020-5-14

Hi,

I have a loop that reads in all images from a folder and then processes and analyses them. From this, I get n variables with certain values. I want to be able plot each of these variables as a histogram on the same plot (and have a different colour for each histogram).

So if I have 3 images, I want 3 histograms. If I have 5, then I want 5.

How would I go about doing this?

I tried a few loops but kept getting stuck.

Thanks for your help.

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Answer 1

Steven Lord 2016-3-2

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https://ww2.mathworks.cn/matlabcentral/answers/270958-plot-histograms-from-a-loop#answer_212003

There's an example on the documentation page for HISTOGRAM that shows how to plot multiple histograms on the same axes.

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msij 2016-3-3

编辑：msij 2016-3-3

I know how to plot multiple histograms on the same axes.

What I'm asking here is how to do this from a loop with variable arguments.

If the input is 4 images, the resulting data is given in 4 variables. Then I need to plot all 4 on the same axes. However I'm not sure how to do this given a variable number of images each time.

EDIT: Never mind. I solved this issue by using a while loop. Thanks anyway.

Giorgio Gerini Romagnoli 2020-5-14