save matrixs in different names

Good morning\evening

 I have written this code that gave me 30 [1*30] matrix

I try to save each matrix [1*30] in different names so I can later combine them in one matrix[30*30] using [mat1;mat;...;]

I tried it using for loop in different ways but i have errors

Can you help me =)?!

**********************************

function C=OneCamera(x,y)
LCamera = 5;
WCamera = 6;

LArea = 5;
WArea = 6;

for x=1:LCamera
    for y=1:WCamera

for i=1:LArea
for j=1:WArea

      d=(i-x)^2+(j-y)^2;

      if d<16 
           C(i,j)=1;
      else 
           C(i,j)=0;
      end;

end;

end 

x
y
C

A= reshape (C',1,30)

end
    end

end

[Fangjun Jiang]

use {}Code format next time.

[Fangjun Jiang]

Don't name your matrix mat1, mat2, mat3,... In your case, you define your matrix as 30x30 and each time you can set the value for each row. See this post http://www.mathworks.com/matlabcentral/answers/143-how-do-i-make-a-series-of-variables-a1-a2-a3-a10

[Walter Roberson]

Duplicate is at http://www.mathworks.com/matlabcentral/answers/17790-combine-30-1-30-matrix-to-one-matrix-30-30

Answer 1

[Dr. Seis]

It may not be efficient, but before your "for" loops you can define an empty matrix:

mat = [];

Then inside your "for" loop after you define your 1x30 matrix "A", you would just need to do:

mat(end+1,:) = A;

Is this a possible work around?

For larger matrices you would do well to preallocate the size of the matrix - for example:

mat = zeros(30,30);

Then populate each row of that matrix after each iteration.

[Ayda]

thanks a lot