How to find a string in the following cell structure?

23 次查看（过去 30 天）
Mr M.
Mr M. 2018-10-15
编辑： Stephen23 2018-10-15
I have s{1}.name = 'abc', s{2}.name = 'xyz', ..., s{n}.name = 'something'. And I would like to know the existance of a strin mystr ='aaa' among these names, and its index. Is it possible to do without a for cycle?

请先登录，再回答此问题。

回答（2 个）

madhan ravi
madhan ravi 2018-10-15
编辑：madhan ravi 2018-10-15
index = find(strcmp({structname.field}, 'string')==1)
Read the link below: https://www.mathworks.com/matlabcentral/answers/32166-find-a-string-element-in-a-structure-matrix#answer_202066
  1 个评论
Mr M.
Mr M. 2018-10-15
编辑：Mr M. 2018-10-15
dot indexing is not supported for variables of this type
synatax error:
mparams{1}.name = 'a'; params{1}.value = 13; params{2}.name = 'b'; params{2}.value = 42; {params.name}

请先登录，再进行评论。

Stephen23
Stephen23 2018-10-15
编辑：Stephen23 2018-10-15
Storing lots of separate scalar structures in a cell array is less convenient than just using one non-scalar structure. You should replace the cell array of scalar structures with one single non-scalar structure, then your task is trivial:
c{1}.name = 'abc';
c{2}.name = 'xyz';
c{3}.name = 'something';
s = [c{:}] % convert cell of scalar structures to non-scalar structure.
x = strcmp('xyz',{s.name})
Even better would be to avoid the cell array entirely, and just use a non-scalar structure right from the start:
s(1).name = 'abc';
s(2).name = 'xyz';
s(3).name = 'something';
x = strcmp('xyz',{s.name})
Read more about how this works:
https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html
https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

类别

在 Help Center 和 File Exchange 中查找有关 Characters and Strings 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