can I abbreviationv these steps to few steps?

v_now=zeros(111,34);           
v_now(1,2:33)=100;                  
v_now(6,14:21)=100; 
v_now(5,2:5)=0; 
v_now(5,30:33)=;

[Matt Kindig]

You could use sub2ind() to convert all of the row/column indices to linear indices, and then set

v_now(linear_indexes)= 100

However, I think this approach would make it more complex than the way you have it now, so I'd leave it as you've shown.

[Mary Jon]

ok,

[Image Analyst]

It already is a few steps.

[Mary Jon]

ok

[Walter Roberson]

You could remove the v_now(5,2:5)=0; as those locations were already set to 0 because you used zeros() to initialize the matrix.