Concentric Squares with random points

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Lewis HC
Lewis HC 2020-5-23
评论： Rena Berman 2020-6-1
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!!!
  2 个评论
KSSV
KSSV 2020-5-23
编辑：KSSV 2020-5-23
You have changed the original question.....even you have unaccepted the accepted answer, even you have deleted your comment where you said thanks for the solution....why? It is not ethical of you.

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KSSV
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')
  2 个评论
Lewis HC
Lewis HC 2020-5-23
Thank you friend!!!
Another question...is it posible get a same squares using for, while, else, etc??...thank you friend!!!

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