MATLAB Central Newsreader - initialising a 3D matrix

initialising a 3D matrix

Madhumitha Iyer — Mon, 09 Nov 2009 01:39:01 -0500

[0 0;0 1;1 0;1 1]
ans =
     0 0
     0 1
     1 0
     1 1
>> size(ans)
ans =
     4 2
Hellp all,
   From the above code we see that the matrix defined is a 4*2 matrix.Now if I want to extend this to a 4*2*50 matrix and initialise it with whatever values I want how can I do it in matlab?Pls tell me.thanx

Re: initialising a 3D matrix

dpb — Mon, 09 Nov 2009 01:52:44 -0500

Madhumitha Iyer wrote:
> [0 0;0 1;1 0;1 1]
> ans =
> 0 0
> 0 1
> 1 0
> 1 1
>>> size(ans)
> ans =
> 4 2
> Hellp all,
> From the above code we see that the matrix defined is a 4*2
> matrix.Now if I want to extend this to a 4*2*50 matrix and initialise
> it with whatever values I want how can I do it in matlab?Pls tell
> me.thanx

x = zeros(4,2,50);

Write code of whatever form needed to initialize it. If you mean you
want all 50 planes identical

y = repmat(x, [1 1 50]);

is one way
--

Re: initialising a 3D matrix

Madhumitha Iyer — Mon, 09 Nov 2009 02:31:02 -0500

Thank you for this information.It was really helpful.

"Madhumitha Iyer" <pyarsa_madhu@yahoo.co.in> wrote in message <hd7rrl$b8c$1@fred.mathworks.com>...
> [0 0;0 1;1 0;1 1]
> ans =
> 0 0
> 0 1
> 1 0
> 1 1
> >> size(ans)
> ans =
> 4 2
> Hellp all,
> From the above code we see that the matrix defined is a 4*2 matrix.Now if I want to extend this to a 4*2*50 matrix and initialise it with whatever values I want how can I do it in matlab?Pls tell me.thanx