Coefficient functions are defined as list of constants or functions. Each element corresponds to a sub-domain, or a part of the boundary (specified by the boundary condition number).
define coefficient coef_lam 10,15, -5, (5*x), (sin(y)),
Coefficients can be specified by materials. Use the '-material' flag for CSG geometries.
define coefficient coef_nu material iron 10000 air 1 default 1All subdomains consisting of material 'iron' get the constant coefficient 10000, the 'air' domain as well as all others get 1.