How to label the interior of region as 2 where as boundary is already labelled as 4 for an object using Matlab coding

I am using grids with width 10. I want the interior to be filled as 2. As shown in attached figure. Than I want to count all filled cells of 4 and 2. Regards for cooperation.

[M.S. Khan]

please need help how to fill the interior of the object.

regards

Answer 1

[KSSV]

AS you have coordinates for the boundary (i.e 4), use inpolygon and get the coordinates lying inside it. Label them or fill the value you want.

[M.S. Khan]

could you plz give me an example