Discard elements from structure array

I have a structure with one field. I try to remove specific elements using i.e.:

trial(5).Hs_m = []

but the element remains in the structure, just having a value of "[]". Is there a way to remove it?

Answer 1

[Massimo Zanetti]

There is a specific function to remove a field from a structure: rmfield

Here is an example:

S.field1 = 'hello';
S.field2 = 456;
S

   S =
     struct with fields:
     field1: 'hello'
     field2: 456

Now remove one field:

S = rmfield(S,'field1')

   S =
     struct with fields:
     field2: 456

[Chris]

Thank you for the answer! I have to remove an element though, not a field! My structure has a length of 240 and I want to remove i.e. one, so to have up to trial(239).Hs_m

[Massimo Zanetti]

So, why mentioning the field? In this case just remove the structure entry. Following your example, you can remove the 5-th entry with

trial(5) = []

regardless of the field(s).