Index of point in matlab plot

Question

Arvind Kumar Pathak 2019-5-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/463080-index-of-point-in-matlab-plot

评论： KSSV 2019-5-20

x = rand(10,3);
plot3(x(:,1),x(:,2),x(:,3),'R.')
hold on
pause;
y = rand(10,3);
plot3(y(:,1),y(:,2),y(:,3),'B.')
%%%%

After ploting the x and y values, I want to click any point on the plot and it well give the information that perticular point lies in x matrix oy y matrix and tells the point no also respectively.

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Answer 1

KSSV 2019-5-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/463080-index-of-point-in-matlab-plot#answer_375843

在 MATLAB Online 中打开

x = rand(10,3);
y = rand(10,3);
hold on
plot3(x(:,1),x(:,2),x(:,3),'R.')
plot3(y(:,1),y(:,2),y(:,3),'B.')
idx = knnsearch(x,y) ; 
position_of_y = (1:size(y,1))' ;
nearest_of_y_in_x = idx ;
T = table(position_of_y,nearest_of_y_in_x) ;
text(y(:,1),y(:,2),y(:,3),num2str(position_of_y))
text(x(:,1),x(:,2),x(:,3),num2str(nearest_of_y_in_x))