filling a internal value of a matrix

Hi I have the following matrix

I=

     0     1     0     0     
     0     0     1     1    
     0     1     0     0    
     0     0     1     0

I want the following output:

     0     1     0     0     
     0     1     1     1    
     0     1     1     0    
     0     0     1     0

Is there any easy way to do that,easily?

Thanks

Answer 1

[Matt Fig]

This function will help you: FINDSUBMAT. Here is an example:

   I=[0 1 0 0
      0 0 1 1
      0 1 0 0
      1 0 0 0
      0 0 1 0
      1 0 0 0
      0 0 1 0];
  idx = findsubmat(I,[1 0 1]');  % Available at the above link...
  I(idx+1) = 1
  I =

       0     1     0     0
       0     1     1     1
       0     1     0     0
       1     0     0     0
       1     0     1     0
       1     0     1     0
       0     0     1     0

Answer 2

[Paulo Silva]

I(6)=1;
I(11)=1;

or

 I([6 11])=1

[Mohammad Golam Kibria]

What to do if I want to fill all those zeros with of the

form :

1

0

1

=

1

1

1

[Walter Roberson]

Please give an example of the desired output matrix.

[Mohammad Golam Kibria]

I=

0 1 0 0

0 0 1 1

0 1 0 0

0 0 0 0

0 0 1 0

0 0 0 0

0 0 1 0

output:

0 1 0 0

0 1 1 1

0 1 0 0

0 0 0 0

0 0 1 0

0 0 1 0

0 0 1 0

This is an example, your previous code will work for

this simple matrix, but in case when my matrix is larger

and I dont know where this type of pattern

1

0

1

exists and then replace the middle 0 to 1 as above