How can I change values in my matrix according to conditions.

I have a zeros(size,size) matrix that i want the values to change depending on my conditions. I have two conditions:

Support = FixedFixed or Support = PinnedPinned

When Support = FixedFixed my matrix coordinates should be

   a(1,1) = 7;
   a(1,2) = -4;
   a(1,3) = 1;
   a(size,size-2)=1;
   a(size,size-1)=-4;
   a(size,size)=7;

and when Support = PinnedPinned my matrix should be

   a(1,1) = 5;
   a(1,2) = -4;
   a(1,3) = 1;
   a(size,size-2)=1;
   a(size,size-1)=-4;
   a(size,size)=5;

can anyone help me code this?

Answer 1

[Chad Greene]

Try a switch.

switch SupportType 
   case 'PinnedPinned' 
     a(1,1) = 5;
     a(1,2) = -4;
     a(1,3) = 1;
     a(size,size-2)=1;
     a(size,size-1)=-4;
     a(size,size)=5;

   case 'FixedFixed' 
     a(1,1) = 7;
     a(1,2) = -4;
     a(1,3) = 1;
     a(size,size-2)=1;
     a(size,size-1)=-4;
     a(size,size)=7; 
  end