How to filter a structure array based on a numeric value from a field?

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Hugo Huerta
Hugo Huerta 2020-3-25
编辑： Stephen23 2022-2-23
Hi,
I have a structure array with different fields and I am trying to implement filters for it.
For fields with char variables, I am able to filter the structure with the following code.
trips_filter = trips(strcmp({trips.ser_id},'Arki'));
For fields with numeric values, I have not been able to find a way to filter it. I tried several ways to do it with no success, for example the following.
trips_filter2 = trips(trips.dir_id == 1);
For that command Im getting the 'Error using == Too many input arguments'.
Any help?
Thanks

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Stephen23
Stephen23 2020-3-26
编辑：Stephen23 2022-2-23
You will need to concatenate the comma-separated list into one numeric array, e.g.:
trips([trips.dir_id] == 1);
% ^ ^ Concatenate !
Read about how this works:
https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html
https://www.mathworks.com/matlabcentral/answers/1656435-tutorial-comma-separated-lists-and-how-to-use-them

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