standard deviation of two elements of a 3d matrix

Greetings,

I have a 672 x 32 x 2800 matrix that I need to chop into a 672 x 2800 matrix but the rows need to be the standard deviation of the columns in the original 3d matrix. Here is what I am doing which is all wrong

new_col_data = zeros(672,2800);
new_col_data = [std(data, 0, 2),:]

I cannot figure this out. Can someone please tell me what is wrong?

Thank you

Answer 1

[Shashank Prasanna]

A = rand(672,32,2800); % Some random data:
B = std(A,[],2); % Compute the standard deviation
B = squeeze(B); % Squeeze it

Answer 2

[Sean de Wolski]

Sounds like you want to squeeze it!

squeeze(std(rand(60,30,45),0,2))

Answer 3

[William]

I tried this:

>> new_col_data = squeeze(std(data,0,2),:);
Error using var (line 59)
First argument must be single or double.

Error in std (line 32)

Something went wrong. I do not have a single dimension in this matrix

[Sean de Wolski]

Mine doesn't have a squeeze(blah,:). It's supposed to jsut be squeeze(blah)