MATLAB: Transpose a structure with named fields

MATLABstructtabletranspose

I have a struct that looks like this:

i.g. labeled fields

I have been trying to apply this example:

% Fake data
s(1).f = rand(1,100); 
s(2).f = rand(1,100); 
s(3).f = rand(1,100); 
c = arrayfun(@(x)x.f.', s, 'UniformOutput', 0); 
s = cell2struct(c, 'f');

but I think it doesn't work becuase I have labeled feilds.

Any ideas?

Best Answer

if all of them are scalar then this will work

s_mod=structfun(@transpose,s,'UniformOutput',false)

Related Solutions

MATLAB: How to get the specific member data from a struct array

From the doc on struct

"When you access a field of a nonscalar structure, such as s.f, MATLAB® returns a comma-separated list. In this case, s.f is equivalent to s(1).f, s(2).f, s(3).f."

So your d = c.name is equivalent to

d = c(1).name, c(2).name, c(3).name.

Try

[d,e,f] = c.name

to see the difference. See here for more info on how to access data in a struct.

struct(2,3) doesn't work because it's trying to create a 1x1 struct array with field:2 and value:3. Field needs to be a char array.

MATLAB: Transposing a 1×100 double to be a 100×1 double inside a Structure

By hand? At the very least do it in a loop! :)

Here's a simple method that you could do in 1 line of code. I wrote it in 2 lines for readability. Method: transpose data, store it in cell array, reassign it to structure/field. Note that this example uses transpose rather than the complex conjugate transpose .

% Fake data
s(1).f = rand(1,100); 
s(2).f = rand(1,100); 
s(3).f = rand(1,100); 
c = arrayfun(@(x)x.f.', s, 'UniformOutput', 0); 
s = cell2struct(c, 'f');

Best Answer

Related Solutions

MATLAB: How to get the specific member data from a struct array

MATLAB: Transposing a 1×100 double to be a 100×1 double inside a Structure

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