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C++ API

Function File: h = PlotVal(mesh Th, ...)

To plot a nodal variable on a 2D mesh

Parameters

Th : mesh structure

Val : 2-by-Th.nq array of doubles

Optional parameters (of type addParameter)

CameraPosition

array of two doubles to set the camera position. Default value is view(2)

colormap

To set colormap value to ’jet’, ’hsv’, ’gray’, ’colorcube’,’cool’,’spring’,’summer’, ... Default value is ’jet’.

shading

To use shading interp if true. Default value is true

colorbar

To set colorbar visible if true. Default value is true

labels

array of labels (integer) to plot only specific regions.

caxis

array of four doubles to set the axis. Default value is an empty array.

Example 

  PlotVal(Th,u,'colormap','cool');

Demonstration 1

The following code

 Th=GetMeshOpt('disk4-1-50.msh',2);
 x=Th.q(1,:);y=Th.q(2,:);
 u=2+cos(pi*(x.^2+y.^2));
 PlotVal(Th,u,'colormap','cool');
 set(legend(),'FontSize',24);

Produces the following figure

Figure 1

Demonstration 2

The following code

 Th=GetMeshOpt('magnetism.msh',2,'format','gmsh');
 x=Th.q(1,:);y=Th.q(2,:);
 u=2+cos(pi*(x.^2+y.^2));
 PlotVal(Th,u,'labels',[3,5]);
 set(legend(),'FontSize',24);

Produces the following figure

Figure 1

Package: ovisumesh