making dataset 3D data function

Question

MA Tonima 2020-1-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/499671-making-dataset-3d-data-function

回答： Ridwan Alam 2020-1-9

采纳的回答： Ridwan Alam

I have 48 variables with 267000*40 elements. I want to make this into datasets that looks like

267000*40*48
267000*48=> for this one I want to find the mean of the rown and do the same thing as before.

My question is how do I make a function that gives me this without having to do it individually:

this is what I know I should do for each variable

function [data]=datacreate(input)
A=input;
A(isnan(A))=0;
meanA=mean(A,2);
data(:,2)=meanA;

but when I want to do it all at once for all 48 variables, how am I to do this?

function [data]=datacreate(input1,...,input48) %is this notation correct?
    for i=1:48 % can this be done without for loop?
    A=input; % unsure here, should it be inputi?
    A(isnan(A))=0;
    meanA=mean(A,2);
    data(:,i)=meanA;
    i=i+1;
    end
data;

Any kind of help is appreciated. Thank you.

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Answer 1

Ridwan Alam 2020-1-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/499671-making-dataset-3d-data-function#answer_409482

Let's assume your variables are named as 'input01', 'input02', ... 'input48'.

my3Ddata = [];
myMeanData = [];
varnames = whos('input*');
for v = 1:length(varnames)
    currInput = eval(varnames(v).name);
    currInput(isnan(currInput)) = 0;
    
    my3Ddata = cat(3,my3Ddata,currInput);
    
    currMean = mean(currInput,2);
    myMeanData = [myMeanData, currMean];
end