How to use the inpolygon function ??
显示 更早的评论
Hi Matlab Users,
I have 4 Ponints given
X1=[0,0], X2=[2,0], X3=[2,2] and X4=[0,2]
and one point, lets say P=[1,1], that has to be tested whether it is in the convex hull of X1 to X4. How do i actually do that??
Sry, but i don´t understand the explanation for the inpolygon function when it comes to this simple example above.
I'd appreciate your help, With best regards, john
采纳的回答
Azzi Abdelmalek
2013-5-18
编辑：Azzi Abdelmalek
2013-5-18
X1=[0,0], X2=[2,0], X3=[2,2],X4=[0,2]
X=[X1(1),X2(1),X3(1),X4(1)]
Y=[X1(2),X2(2),X3(2),X4(2)]
inpolygon(1,1,X,Y) % returns 1 because the point (1,1) is inside the polygon
inpolygon(10,1,X,Y)% %returns 0 because the point (10,1) is outside the polygon
4 个评论
John
2013-5-18
KalMandy
2016-11-9
Hi, Can I use inpolygon to find out if a point lies on the polygon (on one of it's edges/boundaries)?
Steven Lord
2016-11-9
See the second output argument of the inpolygon function.
KalMandy
2016-11-9
Found it, Thanks!
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Computational Geometry 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
