How to Access to Fields of a Non-scalar Struct?

1 ビュー (過去 30 日間)
Rightia Rollmann
Rightia Rollmann 2017 年 3 月 12 日
コメント済み: Walter Roberson 2017 年 3 月 12 日
How can I create the 4-by-1 cell array D from the struct A?
A(1).B.C = 'a';
A(2).B.C = 'b';
A(3).B.C = 'c';
A(4).B.C = 'd';
D =
'a'
'b'
'c'
'd'

採用された回答

Walter Roberson
Walter Roberson 2017 年 3 月 12 日
D = arrayfun(@(IDX) A(IDX).B.C, (1:numel(A)).', 'Uniform', 0);
This is the safest approach, as it will work for the case where there are fields in addition to B within A, where some other approaches would not.
But in the specialized case where B is the only field inside A, then
temp = cell2mat(struct2cell(A));
D = {temp.C}.';
  2 件のコメント
Walter Roberson
Walter Roberson 2017 年 3 月 12 日
.' is plain transpose. ' is conjugate transpose.
For arrays that are not numeric arrays, they come out the same, but I prefer to write .' to remove any ambiguity about whether I intend the transpose to be conjugate or not.

サインインしてコメントする。

その他の回答 (0 件)

カテゴリ

Find more on Structures in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by