Simple operations with struct

How to exclude elements of a struct with a value less than a limit?

For example, if a struct has only one field and this field has the values 220000 and 40000. How to exclude (make 0) only the values less than 50000?

[Image Analyst]

Original question before it gets edited away:

How to exclude elements of a struct with a value less than a limit?

For example, if a struct has only one field and this field has the values 220000 and 40000. How to exclude (make 0) only the values less than 50000?

Answer 1

[Ameer Hamza]

idx = [struct_name.fieldname] > 50000;
new_struct = struct_name(idx);

new_struct will only contain elements where the field name is greater than 50000.

If you don't want to delete those elements, and just want to set them to 0,

new_struct = struct_name;
idx = [new_struct.fieldname] > 50000;
[new_struct(idx).fieldname] = deal(0);

In this case, new_struct will have same elements as original struct_name but the elements set to 0.

Answer 2

[David Hill]

yourStuck.field(yourStuck.field<50000)=0;

[Ameer Hamza]

David, this syntax is not supported in MATLAB

s(1).a = 1;
s(2).a = 2;
s(3).a = 3;
s(4).a = 4;

s.a(s.a < 3) = 0;

Error using  < 
Too many input arguments.

Error in Test (line 6)
s.a(s.a < 3) = 0;