I wanna make a mesh with 3 different regions. The region label for two of them is well defined. I need to say for example: if the region is equal to 1 keep it as 1 ; if the region is equal to 2 keep it as 2 ; otherwise change the label region to 3. I know for a mesh with 2 regions we can use "
a ? b : c is equal to
b if the
a is true,
c otherwise. " operator.
May you help me how can I define it for 3 regions?