COMSOL Multiphysics™

postsurf
postsurf
Purpose Shorthand command for surface plot in 2D and 3D.
Syntax
Description
postsurf(fem,expr1,...)
postsurf(fem,expr1,expr2...)
h = postsurf(fem,...)
postsurf(fem,expr1,expr2...) plots a surface plot on subdomains in 2D
colored according to the expression expr1 and with height according to expr2. For
a 3D model, it plots a colored surface plot on the boundaries, colored according to
expr1. The function accepts all property/value pairs that postplot does. In 2D,
this command is just shorthand for the call
postplot(fem,'tridata',expr1,...
'triz',expr2,...
'tribar','on',...
'axisequal','on',...)
and in 3D, it is shorthand for
postplot(fem,'tridata',expr1,...
'tribar','on',...
'geom','on',...
'axisequal','on',...)
h = postsurf(fem,...) additionally returns handles to the plotted handle
graphics objects.
If you want to have more control over your surface plot, use postplot instead of
postsurf.
Example
Surface plot of the solution to the equation –∆u = 1 over the geometry defined by
the L-shaped membrane. Use Dirichlet boundary conditions u = 0 on ∂ Ω .
sq1 = square2(0,0,1);
sq2 = move(sq1,0,-1);
sq3 = move(sq1,-1,-1);
clear fem
fem.geom = sq1+sq2+sq3;
fem.mesh = meshinit(fem);
fem.equ.c = 1;
fem.equ.f = 1;
fem.bnd.h = 1;
fem.xmesh = meshextend(fem);
fem.sol = femstatic(fem);
postsurf(fem,'u')
See Also
postplot, postanim, postcont, postlin, postarrow, postarrowbnd,
postflow, postprinc, postprincbnd, postslice, postiso, posttet
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