# Multiply structure by a constant

18 views (last 30 days)
rockstar49 on 12 Jan 2023
Commented: Bora Eryilmaz on 12 Jan 2023
Like to multiply a structure with fields by a constant, but it giving an error. Is there another way to do this?

Matt J on 12 Jan 2023
Edited: Matt J on 12 Jan 2023
s.a=1; s.b=2,
s = struct with fields:
a: 1 b: 2
S=structfun(@(f)10*f,s,'uni',0) %multiply by 10
S = struct with fields:
a: 10 b: 20

Bora Eryilmaz on 12 Jan 2023
You have to cycle through the individual fields of the structure:
s = struct('a', [1 2 3 4], 'b', -1)
s = struct with fields:
a: [1 2 3 4] b: -1
for f = fieldnames(s)'
s.(f{1}) = 4 * s.(f{1});
end
s
s = struct with fields:
a: [4 8 12 16] b: -4
rockstar49 on 12 Jan 2023
It is mainly 1 by 1 value, do you still need to do this as i have variable names
Bora Eryilmaz on 12 Jan 2023
Not sure what you mean by "variable names". Are you referring to the variable name of the struct or the fields of the struct?

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