MATLAB向量化:从向量元素填充结构字段 [英] MATLAB vectorization: filling struct fields from vector elements

问题描述

我有一个结构向量，每个结构都有一个字段x:

I have a vector of structs each having a field x:

s1.x = 1;
s2.x = 2;
s3.x = 3;
S = [s1, s2, s3];

我想根据给定的矢量X设置S中所有结构的字段x，即我想对以下循环进行矢量化:

I would like to set the field x of all structs in S from a given vector X, i.e. I would like to vectorize the following loop:

X = [97, 98, 99];
for i = 1 : length(S)
    S(i).x = X(i);
end

这可能吗?

推荐答案

您可以这样做:

Xc = num2cell(X); %// convert X to cell array of numbers
[S.x] = Xc{:}; %// generate comma-separated list from cell array, and assign

对于7.0之前的Matlab版本，应将第二行更改

For Matlab versions before 7.0 the second line should be changed into

[S.x] = deal(Xc{:}); %// generate comma-separated list from cell array, and assign

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