How can the plot be divided into 2 using the graph line?
显示 更早的评论
Hello everyone,
I have a graph that I obtained with the help of the RRT algorithm.
In addition, I have an array of points that are on the plot as you can see.
I want to write a function \ use a classification algorithm (or any other machine learning algorithm) to divide the points into 2 using the graph (points on the right side of the graph and points on the left side)
How can this be done? I tried several options but failed.. :/
I would be very happy to help! :)
采纳的回答
Perhaps something like the following:
load roadPoints
[X,Y]=ndgrid(0:2.5:100);
p1=polyshape([roadPoints;min(roadPoints(:,1)), max(roadPoints(:,2))],'Simplify',true);
p2=polyshape([roadPoints;max(roadPoints(:,1)), min(roadPoints(:,2))],'Simplify',true);
class1=isinterior(p1,X(:),Y(:));
class2=isinterior(p2,X(:),Y(:));
noclass=~(class1|class2);
hold on
scatter(X(class1), Y(class1),'g','filled','MarkerEdgeColor','none');
scatter(X(class2), Y(class2),'c','filled','MarkerEdgeColor','none');
scatter(X(noclass),Y(noclass),'MarkerFaceColor',[0.5,0.5,0.5],'MarkerEdgeColor','none')
plot(roadPoints(:,1), roadPoints(:,2),'r','LineWidth',5);
legend('Class 1', 'Class 2','UnClassified','Location','NorthOutside')
hold off
5 个评论
Yovel
2023-11-2
Matt J
2023-11-2
You're welcome, but please Accept-click the answer if you decide it is what you need.
Yovel
2023-11-5
Hi,
If the route looks like this, the classification of the points is not done correctly..
The calssification shouls be like this:
Thanks for your help! :)
Yovel
2023-11-5
Matt J
2023-11-5
I'm glad, but agan, please Acept-click the answer if it ultimately worked.
更多回答（2 个）
Image Analyst
2023-10-29
It looks like all the points on the right have a y value greater than about 6, so just do
rightIndexes = (y >= 6);
xRight = x(rightIndexes);
yRight = y(rightIndexes);
xLeft = x(~rightIndexes);
yLeft = y(~rightIndexes);
3 个评论
Yovel
2023-11-2
Dyuman Joshi
2023-11-2
Is the route completely random or can a relation/observation be identified?
And you have not defined what is the criteria/logic to be used for dividing points to the left and right side.
Yovel
2023-11-2
I get the route from the RRT algorithm and I later turn it into a discrete route.
Basically, my goal is to build a walking track for a 2-legged robot that can only step in places where there are dots.
I want to create a track for each leg (for the right leg and the left leg)
That's why I want to choose each time 2 points from each side of the track that are closest to the center point of the body (the point of the track is RRT)
类别
在 帮助中心 和 File Exchange 中查找有关 k-Means and k-Medoids Clustering 的更多信息
Translated by 
