How to transform the normalized values of a histogram (i.e. the bars heights) in percentages?

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Sim 2023-2-8

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https://ww2.mathworks.cn/matlabcentral/answers/1909000-how-to-transform-the-normalized-values-of-a-histogram-i-e-the-bars-heights-in-percentages

评论： Star Strider 2023-2-8

采纳的回答： Star Strider

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How to transform the normalized values of this histogram (i.e. the bars heights) in percentages?

I should multiply the bars values by 100, but how to do it ? (maybe inside the "histogram" function)

a = [0 0 0 1 1 1 1 1 1 3 3 3 2 2 4 4 39 39 39 39 39 39 40 40 40 40 40 40 40 0 0 0 0 0 0 0 41 41 41];

histogram(a,'Normalization','probability')

This could be a workaround:

bar(histcounts(a)/(sum(histcounts(a)))*100)

BUT:

the bars are shifted towards right (why??)
I would like to still use the "histogram" function (if possible, obviously)

Any idea ?

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Sim 2023-2-8

编辑：Sim 2023-2-8

Oh cool, thanks a lot @Les Beckham!! :-)

Les Beckham 2023-2-8

You are quite welcome.

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采纳的回答

Star Strider 2023-2-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1909000-how-to-transform-the-normalized-values-of-a-histogram-i-e-the-bars-heights-in-percentages#answer_1166835

在 MATLAB Online 中打开

Altering the histogram plot is likely not possible because the ‘Values’ vector is read-only.

The easiest approach is likely to re-plot the bar plot using the derived values —

a = [0 0 0 1 1 1 1 1 1 3 3 3 2 2 4 4 39 39 39 39 39 39 40 40 40 40 40 40 40 0 0 0 0 0 0 0 41 41 41];

figure

hh = histogram(a,'Normalization','probability');

xlabel('Centers')

ylabel('Probability')

Values = hh.Values*100;

Cntrs = hh.BinEdges(1:end-1) + diff(hh.BinEdges)/2;

figure

bar(Cntrs, Values)

xlabel('Centers')

ylabel('Percent')

@Star Strider Yes yes, true, many thanks for having presented a solution related to the histogram function, I am very grateful! (this is a way to learn/understand deeper the functions available in Matlab)

Star Strider 2023-2-8

As always, my pleasure!

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