. The problem is, for each simulation, I will generate some number of randomly located charges within my geometry, so the charge distribution will take the form of 
, where 
and 
are the location of the 
charge, q, and A is the area of the traingular mesh element containing that charge (in general, a function of x and y). All of the documentation about creating an f-coefficient function (i.e. 
) seems to only allow coding an f-function with predetermined charge locations. In other words, the f function must be of the form f(location,state), and can take no additional inputs to specify the locations of the charges. This seems like a pretty straightforward problem I'm trying to simulate. Is there an easy way to create an f-coefficient function that models point sources within various mesh traingles? Thank you!
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