boundary
Vertex coordinates of polyshape boundary
Description
[
returns the x-coordinates and the
y-coordinates of each boundary of a x,y] = boundary(polyin)polyshape.
The vectors x and y contain the list of
coordinates for each boundary, delimited by NaN. The
boundary function automatically appends the first vertex
coordinates of polyin to the end of x and
y to close the polygon.
Examples
Polygon Boundary Vertices
Create a polygon containing two boundaries, and display the vertex coordinates of both boundaries. The list of vertices for the boundaries are delimited by NaN.
x1 = [0 1 2];
y1 = [0 1 0];
x2 = [2 3 4];
y2 = [1 2 1];
polyin = polyshape({x1,x2},{y1,y2});
plot(polyin)
[x,y] = boundary(polyin)
x = 9×1
0
1
2
0
NaN
2
3
4
2
y = 9×1
0
1
0
0
NaN
1
2
1
1
Input Arguments
Output Arguments
See Also
addboundary | numboundaries | polyshape | rmboundary | sortboundaries
Introduced in R2017b