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

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

Answer 1

[Stephen23]

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

[Hugo Huerta]

Great. Thank you!