How to repeat rows in fields of structure

The existing strucure has to be expanded along rows of fields. The actual structure contains many fieldsnames and rows in them.

s.a=[1;2;3];
s.b=[9 1; 5 4; 3 7];

The rows have to be repeated to certain number of rows say 53.

I have used arrayfun and repmat, but error of size mismatch is shown.

Without use of for loop, how is it possible.

Answer 1

[Guillaume]

Note that practically, there is no difference between arrayfun, structfun, etc. and a loop. If anything, arrayfun can be slower than a loop.

I suspect that what you want is structfun which applies the same function to each field of the structure:

news = structfun(@(fld) repmat(fld, 53, 1), s, 'UniformOutput', false)

[Mukund]

Following error is shown: "Error using struct Field names must be non-empty character vectors"

[Guillaume]

Major typo! The struct in my example should have been structfun, as you could have infered from the explanation on the line just above.

[Mukund]

Another error: Undefined function or variable 'field'. Error in @(fld)repmat(field,53,1). Correction:

news=structfun(@(field)repmat(field,53,1),s,'UniformOutput',false)

However, rows in field reaches to 159 instead of 53.

[Guillaume]

Sorry yes, I changed the name of the variable midway through the function. I must have been tired when I wrote that answer.

I'm not actually sure I understood what you actually want to do with each field. I thought you wanted to replicate the rows 53 times. If that's not what you want to do, you need to change the body of the function used in structfun to do what you actually want to do.