How to find string structure elements?

May be it is obvious, but I could not find out.

Let's say I have a structure 'people' with fields 'Surname' and 'Family_Name', like this:

people(1).Surname='Judit';
people(1).Family_Name='White';
people(2).Surname='Margaret';
people(2).Family_Name='Brown';
people(3).Surname='Judit';
people(3).Family_Name='Brown';

and so on, thousends.

How to find all Judits (or Browns)? I know I can make loops but is there any faster and shorter code?

Csaba

Answer 1

[Azzi Abdelmalek]

people(1).Surname='Judit';
people(1).Family_Name='White';
people(2).Surname='Margaret';
people(2).Family_Name='Brown';
people(3).Surname='Judit';
people(3).Family_Name='Brown';
%--------------------------------
a={people.Surname}
b={people.Family_Name}
id={'Judit' 'Brown'}
idx1=ismember(a,id)
idx2=ismember(b,id)

[Stephen Cobeldick]

The syntax for converting the field to a cell array is documented here:

https://www.mathworks.com/matlabcentral/answers/29282-non-scalar-structures

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

[Csaba]

Thank you!

Answer 2

[upol]

Why this gives problem in C Coder. Error: Directly accessing field or property of nonscalar struct or object not supported for code generation.

s1=string({OPS_FLT(:).ACFT_ID})

s2=OPS_FLT(2).ACFT_ID

uuindex=find(strcmpi(s1,s2))

({OPS_FLT(:).ACFT_ID}) has already been defined as

OPS_FLT(1).ACFT_ID="apple"

OPS_FLT(2).ACFT_ID="orange"

I am trying to find orange from the array. It works in Matlab but not in C Coder