MATLAB: Triangulation within specified region

delaunay triangulationtriangulation

I am trying to triangulate a specified region along a 2d plane. The region i wish to tringualte is specified by x and y cooridantes and the lines joining each of these points. However when I use delaunyTriangulation it triangulates the entire region, including the parts I wish to leave out. I have inserted an image below.

Is there anyway to specify the boundary or region of which I would like to triangulate or remove the large unwated trinagles from the triangulation?

Thanks

Best Answer

Read about delaunayTriangulation , you can provide edge constraints. On providing these constraints; you can avoid such triangles.

DT = delaunayTriangulation(x,y,C)

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MATLAB: Find the vertices from delaunay triangulation

x = rand(10,1) ; % a randoms data 
y = rand(10,1) ;
dt = delaunayTriangulation(x,y) ;   % delaunay triangulation 
points = dt.Points ;    % points 
tri = dt.ConnectivityList ;    % nodal connectivity 
x = points(:,1) ;  
X = x(tri) ;
y = points(:,2) ;
Y = y(tri) ;

MATLAB: Find area of the filled region of a graph

trapz(x,y)

Best Answer

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MATLAB: Find the vertices from delaunay triangulation

MATLAB: Find area of the filled region of a graph

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