indicator function on subdomain
I am a new user of Freefem++ and I have the following problem. I have defined a domain (a square) and then a mesh on this domain. I now want to define a function (func) that is a sum of indicator functions taking the value 1 on disks that are located in the domain (but these disks are not defined in the mesh!).
I have tried several things without success...
If someone can help me I would be glad :)
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