I have a matrix. I need to replace value 1 with 5 of row 3 from column 2 to 4. and I need to replace value 1 with 5 of column 5 from row 2 to 4. I = 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 How to do this easily?Thanks in advance.

replace a portion of a matrix

Mohammad Golam Kibria

2011 5 18

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I have a matrix. I need to replace value 1 with 5 of row 3 from column 2 to 4. and I need to replace value 1 with 5 of column 5 from row 2 to 4.

I =

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

How to do this easily?Thanks in advance.