(Not recommended) Select triangles using relative tolerance criterion
pdeadgsc is not recommended.
bt = pdeadgsc(p,t,c,a,f,u,errf,tol)
bt = pdeadgsc(p,t,c,a,f,u,errf,tol) returns
indices of triangles to be refined in
adaptmesh to select the triangles to be further
refined. The geometry of the PDE problem is given by the mesh data
For more details, see Mesh Data.
u is the current solution, given
as a column vector.
errf is the error indicator, as
tol is a tolerance parameter.
Triangles are selected using the criterion
scale is calculated as follows:
umax be the maximum of
u, respectively. Let
the side of the smallest axis-aligned square that contains the geometry.
scale = max(fmax*l^2,amax*umax*l^2,cmax*umax).
The scaling makes the
tol parameter independent
of the scaling of the equation and the geometry.