Passing one element from array of structures

I have an array of structures, all with the same fields, and I am trying to pass them one at a time into another function.

What I am doing:

f1 = linspace(1,10,10)
f2 = linspace(11,20,10)

[F1,F2] = meshgrid(f1,f2)

s(numel(F1)).field1 = 0
for ii =1:numel(F1)
    s(ii).field1 = F1(ii)
    s(ii).field2 = F2(ii)
    s(ii).field3 = 0
    s(ii) = funct1(s(ii))
end

Where funct1 is my function that generates a value for s(ii).field3 based on the values of field1 and field2

I get the error:

Error using subsindex Function 'subsindex' is not defined for values of class 'struct'.

I have also tried: s = arrayfun(@(x) funct1(x), s) but got the same error

What am I doing wrong and how can I fix it?

Answer 1

[Brian B]

What is in funct1? If I define

 funct1 = @(s)s;

then your code works without error.

[Brian B]

My guess is that somewhere you are trying to use a struct as the index, as in

 F1(s(1))

which does indeed produce the error you have.