Extract values from vector with cell indices
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Hello guys,
i created a cell, with indices in the fields.
c=cell(2,2);
c{1,1}=[1,2,3];
c{2,1}=[7,8];
c{1,2}=[1,4];
c{2,2}=[3,5];
The goal is to extract and sum up values from another vector at this indices.
data=(1:10)';
The result should be a matrix (2x2, same size like c) with the results in it.
Pseudocode:
results(1,1)=sum(cell{1,1})=1+2+3
results(2,1)=sum(cell{2,1})=7+8
... and so on...
But this should be done automatically without a loop over the fields of the cell.
采纳的回答
madhan ravi
2020-7-21
cellfun(@sum,c)
4 个评论
Marc Gebhardt
2020-7-21
Marc Gebhardt
2020-7-21
madhan ravi
2020-7-21
Mine works if the cell contains 1d vector, if otherwise you need to set the uniformoutput to false.
Bruno Luong
2020-7-21
Well your pseudo-code does not depend on DATA, and it's confusing to select DATA example that has value==indice.
cellfun(@(i) sum(data(i)), c)
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