Calculating mean over multiple dimensions

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Akul Satish 2019-2-17

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https://ww2.mathworks.cn/matlabcentral/answers/445395-calculating-mean-over-multiple-dimensions

编辑： madhan ravi 2019-2-17

I have a 3-dimensional variable that is of the class double, example: data has 50x2000x999. I would like to compute the mean for the 3rd dimension first, then the second dimension, and then the first dimension.

I know one way to do this is:

meandata = mean(data,3)

meandata = mean(meandata,2)

meandata = mean(meandata).

Is there a more efficient way to do this? In one line of code probably?

Thanks,

Akul

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回答（1 个）

madhan ravi 2019-2-17

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https://ww2.mathworks.cn/matlabcentral/answers/445395-calculating-mean-over-multiple-dimensions#answer_361397

编辑：madhan ravi 2019-2-17

在 MATLAB Online 中打开

mean(data,'all') % or
mean(data,[3 2 1])

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madhan ravi 2019-2-17

编辑：madhan ravi 2019-2-17

在 MATLAB Online 中打开

For prior versions:

mean(data(:))

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