Visualizing Mesh Quality
The following commands show how to visualize the mesh quality for a mesh on the unit circle:
model = ModelUtil.create('Model');
comp1 = model.component.create('comp1', true);
geom1 = comp1.geom.create('geom1', 2);
geom1.feature.create('c1', 'Circle');
geom1.runAll;
 
mesh1 = comp1.mesh.create('mesh1');
mesh1.feature.create('ftri1', 'FreeTri');
mesh1.run;
 
meshdset1 = model.result.dataset.create('mesh1', 'Mesh');
meshdset1.set('mesh', 'mesh1');
 
pg1 = model.result.create('pg1', 2);
 
meshplot1 = pg1.feature.create('mesh1', 'Mesh');
meshplot1.set('data', 'mesh1');
meshplot1.set('filteractive', 'on');
meshplot1.set('elemfilter', 'quality');
meshplot1.set('tetkeep', 0.25);
mphplot(model,'pg1','rangenum',1);
 
meshplot1.set('elemfilter','qualityrev');
mphplot(model,'pg1','rangenum',1);
These commands display the worst 25% and the best 25% elements in terms of mesh element quality. In Figure 3-17, the triangular mesh elements in the right-hand side plot are more regular than those in the left-hand side plot; this reflects the fact that a quality measure of 1 corresponds to a uniform triangle, while 0 means that the triangle has degenerated into a line.
Figure 3-17: Visualizations of the mesh quality: worst 25% (left) and best 25% (right).
Code for use with MATLAB®
model = ModelUtil.create('Model');
comp1 = model.component.create('comp1', true);
geom1 = comp1.geom.create('geom1', 2);
geom1.feature.create('c1', 'Circle');
geom1.runAll;
mesh1 = comp1.mesh.create('mesh1', 'geom1');
mesh1.feature.create('ftri1', 'FreeTri');
mesh1.run;
meshdset1 = model.result.dataset.create('mesh1', 'Mesh');
meshdset1.set('mesh', 'mesh1');
pg1 = model.result.create('pg1', 2);
meshplot1 = pg1.feature.create('mesh1', 'Mesh');
meshplot1.set('data', 'mesh1');
meshplot1.set('filteractive', 'on');
meshplot1.set('elemfilter', 'quality');
meshplot1.set('tetkeep', 0.25);
mphplot(model,'pg1','rangenum',1);
meshplot1.set('elemfilter','qualityrev');
mphplot(model,'pg1','rangenum',1);