Create Matrix using loop

I have a data file containing 2,239,488 values. I need to arrange these values in a 108*108*192 matrix. The data file is arranged in such matter (0,0,0),(1,0,0),(2,0,0)....(107,0,0),(0,1,0),(2,1,0)...(107,1,0),(0,2,0),(1,2,0).......(107,107,191). i.e. my x coordinates runs fasters (inner loop) and the y in the middle loop and finally z is the outer loop until Ive exhausted the 108*108*192 numbers.

Is there a function or code to take my data file and arrange in such matrix?

Thanks, Sydney

Answer 1

[David Hill]

Look at reshape() function.

reshape(yourMatrix,108,108,192);

[Sydney Lavan]

Okay I am receiving an error. "To RESHAPE the number of elements must not change."

My data file is 447899x5 double. (2,239,488 values)

I am not sure why I am receiving this error when my new matrix would be 108*108*192 which is 2,239,488 values.

[David Hill]

447899x5 = 2239495

Give an example of your data file, or attach it to your question.

[Sydney Lavan]

Attached are two screen shots of the beginning and end of my data file. The file is too large to attach.

Now I think the problem is yes there are 2,239,488 values but matlab fills in some zeros could this be the problem when I try to reshape into 108*108*192?

Sydney

[David Hill]

A=yourMatrix;
A=A(:);
A=A(A~=0);
B=reshape(A,108,108,192);

[Sydney Lavan]

Great this worked !

Thank you, Sydney