Concentric Squares with random points
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Hi to everybody
Someone could I help me how to create a script for two concentric squares so that I have a set of points in the difference of areas?
I have this initial code:
With the last script I reach to create two areas but I need only the points in the difference of areas
Thank you to everybody!
Thank you guys!!!
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KSSV
2020-5-23
clc; clear all ;
% Inner Square
S1 = [-5 -5 ; 5 -5 ; 5 5 ; -5 5] ;
% Outer Square
S2 = [-10 -10 ; 10 -10 ; 10 10 ; -10 10] ;
% Generqate random points
a = -10 ; b = 10 ;
N = 100000 ;
x = (b-a)*rand(N,1)+a ;
y = (b-a)*rand(N,1)+a ;
% poins which lie inside S1
idx = inpolygon(x,y,S1(:,1),S1(:,2)) ;
% plot
x = x(~idx) ; y = y(~idx) ;
plot(x,y,'.b')
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