How to store 2D variables in matrix
5 次查看(过去 30 天)
显示 更早的评论
I want to have a variable which can store coordinates of various "N" points.
Then i want to randomly select "n" number of the points without repetition.
n<=N
0 个评论
回答(1 个)
Bjorn Gustavsson
2019-10-27
For the storing the point coordinates you might look at either cell-arrays:
r1 = [1,2,3];
r2 = [3,2,5];
r3 = [4.5,pi,1,5]; % if some of your point-coordinates are of different sizes
Point_array = {r1,r2,r3} ; % and so on
or simply a higherdimensional array:
r1 = [1,2,3];
r2 = [3,2,5];
r3 = [4.5,pi,1]; % if some of your point-coordinates are of different sizes
Point_array(:,3) = r3;
Point_array(:,2) = r2;
Point_array(:,1) = r1; % and so on
For the selection of n points out of that one, have a look at the file exchange for: nextchoose and nextperm. They solve most of my problems with tasks like that.
HTH
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!