Voronoi diagram
Note:
Qhull-specific options are no longer supported. Remove the |
Note:
The behavior of |
voronoi(x,y)
voronoi(x,y,TRI)
voronoi(dt)
voronoi(AX,...)
voronoi(...,'LineSpec')
h = voronoi(...)
[vx,vy] = voronoi(...)
voronoi(x,y)
plots the
bounded cells of the Voronoi diagram for the points x
,y
.
Lines-to-infinity are approximated with an arbitrarily distant endpoint.
voronoi(x,y,TRI)
uses the
triangulation TRI
instead of computing internally.
voronoi(dt)
uses the Delaunay triangulation dt
instead
of computing it.
voronoi(AX,...)
plots into AX
instead
of gca
.
voronoi(...,'LineSpec')
plots
the diagram with color and line style specified.
h = voronoi(...)
returns h
,
which is a vector of two chart line handles. One represents the points
and the other represents the Voronoi edges.
[vx,vy] = voronoi(...)
returns
the finite vertices of the Voronoi edges in vx
and vy
.
Note
For the topology of the Voronoi diagram, i.e., the vertices
for each Voronoi cell, use [v,c] = voronoin([x(:) y(:)]) |
Consider a set of coplanar points P. For each point P_{x} in the set P, you can draw a boundary enclosing all the intermediate points lying closer to P_{x} than to other points in the set P. Such a boundary is called a Voronoi polygon, and the set of all Voronoi polygons for a given point set is called a Voronoi diagram.
Use one of these methods to plot a Voronoi diagram:
If you provide no output argument, voronoi
plots
the diagram.
To gain more control over color, line style, and other
figure properties, use the syntax [vx,vy] = voronoi(...)
.
This syntax returns the vertices of the finite Voronoi edges, which
you can then plot with the plot
function.
To fill the cells with color, use voronoin
with n = 2
to
get the indices of each cell, and then use patch
and
other plot functions to generate the figure. Note that patch
does
not fill unbounded cells with color.