How to add rows and colums of zero?

I want to compare two matrices for that the number of rows and columns should be similar

The two matrices to be compared are as follows

A=[3 4 5; 3 4 5; 3 4 5]
B=[1 2 3 4 5 ; 1 2 3 4 5; 1 2 3 4 5]

Consider the numbers also as their position in the matrix for ease of understanding

That means we need two rows and two colums of zero at the start

the expected matrix of is as follows

A=[0 0 3 4 5;0 0 3 4 5;0 0 3 4 5]

P.S. The number of colums and rows of zero are not always the same. that could be varying like 3 colums and 1 rows and further

Answer 1

[madhan ravi]

 A = padarray(A,[abs(size(B,1)-size(A,1)) abs(size(B,2)-size(A,2))],0,'pre') % requires image processing toolbox
 

Gives:

 A =

     0     0     3     4     5
     0     0     3     4     5
     0     0     3     4     5

[Shubham Mohan Tatpalliwar]

colums can also be added with

AA =[zeros(size(A,1),2) A(:,:)]

[Shubham Mohan Tatpalliwar]

But i dont know about the rows or a code with wich i can add both rows and colums of zero

[madhan ravi]

Did you try my answer?

n=2; % no of zeros(rows & columns) to be padded 
A=[zeros(n,size(B,2));zeros(size(A,1),n) A]

Gives:

A =

     0     0     0     0     0
     0     0     0     0     0
     0     0     3     4     5
     0     0     3     4     5
     0     0     3     4     5