Extract values from vector with cell indices

1 次查看（过去 30 天）
Marc Gebhardt
Marc Gebhardt 2020-7-21
评论： Bruno Luong 2020-7-21
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.

请先登录，再回答此问题。

采纳的回答

madhan ravi
madhan ravi 2020-7-21
cellfun(@sum,c)
  4 个评论
显示 2更早的评论
madhan ravi
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
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)

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by