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Division of a vector

Latest activity Commented on by darova
on 11 Sep 2019
Goodmorning,
I would like to have help about that question: i've a vector which rapresents different zones in a 2D space.Main problem is that coordinates of differents zone are all togheter in one single vector,whereas i would like to have one different vector for each zone.
Attached i've reported two images which represent current situation:
  • In image 1 - i've reported current situation, in which i've one single vector with the coordinate of the four zones
  • In image 2 - i've reported desired situation, in which i've one vector for each zone.
I would like to know if there is a commande which is able to split vector,recognize different zones.
Attached a SavedWorkspace with one coordinate example, which can be used with following line code to plot the situation.
figure(1);grid on;hold on;
scatter(Zone_1_Overlap_Complete_Not_Zeros(:,1),Zone_1_Overlap_Complete_Not_Zeros(:,2),2);
hold off

  2 Comments

Matt J
on 10 Sep 2019
In your example, the zones all appear to be convex. Will this always be the case?
Goodmorning,
It could happen that some of these zones can not be convex but concave.

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1 Answer

darova
Answer by darova
on 10 Sep 2019
 Accepted Answer

Try clusterdata()
load WorkSpace
X = Zone_1_Overlap_Complete_Not_Zeros(:,1);
Y = Zone_1_Overlap_Complete_Not_Zeros(:,2);
idx = clusterdata([X Y],'maxclust',4);
scatter(X,Y,3,idx,'filled')
See also kmeans()

  2 Comments

Thanks so much,it work perfectly.
Thanks for your support
darova
on 11 Sep 2019
You are welcome

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