How can I covert 10x10 matrix to a 10x10x1 matrix?

I'm writing a matrix to an HDF5 file, I've created the file as a matrix sized 10x10x500.

I have a 10x10 matrix, and want to iteratively write out each 10x10 matrix to my HDF5 file, but h5write complains that my 10x10 matrix needs to be a 10x10xN sized matrix.

Is there a way to change a 10x10 matrix to a 10x10x1 so the dimensions match for writing with h5write? None of: reshape, permute, or cat work.

I could cache all 500 10x10 matrices in memory and write them out, but my real-life example is much bigger than 10x10x500. It'd be easier if I could do it iteratively.

[John D'Errico]

A 10x10 matrix is ALREADY a 10x10x1 matrix. In fact, it is a 10x10x1x1x1x1x1x1... matrix. Those singleton dimensions go on to infinity.

A = rand(10,10);

size(A,3)
ans =
     1

size(A,12)
ans =
     1

Ok, infinity is a long walk.

[per isakson]

There is something is wrong with the way you call h5create and h5write - I guess.