How can I pass from 2D matrix to 3D matrix?

Hi,

I'm trying to pass to a 3D matrix having a 2D matrix of this type: signal 1024x512. Each row is a signal obtained by a Radar measurement lasting 14.2 of a subject that breaths and is then transformed in frequency domain with an amplitude (columns).

My 3D matrix should have as three dimensions: waveform number, amplitude, frequency.

I don't know how to put togheter these 3 parameters...

Thank you

Regards

Answer 1

[KALYAN ACHARJYA]

Pass the 2D matrix to 3D as plane (2D insert to 3D), you can do that using Multidimentional Arrays.

Is this your are looking for?

[wolss]

unfortuntely I don't know how represent in one of the third dimensions the frequency, because the number of waveform is supposed to be the x, the amplitude the y but the frequency.... is represented into the signal 2D but I don't know how to "export" it in 3D...

[KALYAN ACHARJYA]

x,y, z..see the following figure, you can figure out the 3D array representation, all individual planes work as 2D array.

Answer 2

[Image Analyst]

Maybe

array3D = array2D; % (only do for the first 2D matrix);
array3D = cat(3, array3D, array2D); % Append array2D onto existing 3D matrix.