pdesurf (Partial Differential Equations Toolbox)

Shorthand command for surface plot.

pdesurf(p,t,u)

Description

pdesurf(p,t,u)

plots a 3-D surface of PDE node or triangle data. If u is a column vector, node data is assumed, and continuous style and interpolated shading are used. If u is a row vector, triangle data is assumed, and discontinuous style and flat shading are used.

h=pdesurf(p,t,u)

additionally returns handles to the drawn axes objects.

For node data, this command is just shorthand for the call

pdeplot(p,[],t,'xydata',u,'xystyle','interp',...
         'zdata',u,'zstyle','continuous','colorbar','off');

and for triangle data it is

pdeplot(p,[],t,'xydata',u,'xystyle','flat',...
         'zdata',u,'zstyle','discontinuous','colorbar','off');

If you want to have more control over your surface plot, use pdeplot instead of pdesurf.

Examples

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

» [p,e,t]=initmesh('lshapeg'); 
» [p,e,t]=refinemesh('lshapeg',p,e,t); 
» u=assempde('lshapeb',p,e,t,1,0,1); 
» pdesurf(p,t,u)