COMSOL Multiphysics™

postcrossplot
postcrossplot(fem,2,6,'surfdata','ux','cont','on',...
'surfedgestyle','k','refine',1,...
'solnum',[1,4,7,11])
Plot along a line intersecting the geometry:
linpts = [-1 1;-1 1;0 1];
postcrossplot(fem,1,linpts,'lindata','u','npoints',100)
Same but with time extrusion:
postcrossplot(fem,1,linpts,'surfdata','u','npoints',100,...
'camlight','on')
Plot along some connected edges:
postcrossplot(fem,1,[4 5 8 11],'lindata','t1x')
% Compare this with the postplot call
postplot(fem,'lindata','t1x','edl',[4 5 8 11],'linbar','on',...
'geom','off')
Point plot on n points in geometry:
n = 30;
pts = [linspace(-1,1,n);linspace(0,1,n);linspace(0,1,n)];
postcrossplot(fem,0,pts,'pointdata','u')
2D Examples
Time-dependent problem (Heat equation)
clear fem
fem.geom = geomcsg({rect2});
fem.mesh = meshinit(fem);
fem.equ.c = 1; fem.equ.f = 1; fem.equ.da = 1;
fem.bnd.h = 1;
fem.shape = 2;
fem.xmesh = meshextend(fem);
fem.sol = femtime(fem,'tlist',0:0.01:0.1);
Plot solution along the diagonal for all time-steps:
postcrossplot(fem,1,[0 1;1 0],'lindata','u')
Plot solution at time step 4 in several parallel cross-sections:
postcrossplot(fem,1,[0 1;1 0],'lindata','u*x','solnum',4,...
'spacing',5,'lincolor','r')
Plot along three boundaries for the first five time steps:
postcrossplot(fem,1,[1 2 3],'lindata','ux','cont','on',...
'solnum',1:5)
Same but with time-extrusion:
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