creatting a polygon in matlab

조회 수: 3 (최근 30일)
Mili Kian
Mili Kian 2020년 10월 4일
댓글: Matteo Lo Preti 2020년 10월 4일
hi
im going to create a polygon that is combination with points and function.
look at this picture
fourmula of top function is : y = 10+1*exp((-(x-15).^2)/10);
i want to creat a polygon the hatched figured
please help, thanks

채택된 답변

Matteo Lo Preti
Matteo Lo Preti 2020년 10월 4일
x = linspace(0,30,50);
y = 10+1*exp((-(x-15).^2)/10);
x = [30 30 0 x];
y = [10 0 0 y];
warning('off', 'MATLAB:polyshape:repairedBySimplify')
polygon = polyshape(x,y);
figure;
plot(polygon);
  댓글 수: 2
Mili Kian
Mili Kian 2020년 10월 4일
thanks alot.
and im sorry,
i have another question i have a lot of points and i want to find if this points is in polygon or not ?
my points are:
X Y
0.50000000 0.50000000
0.50000000 1.5000000
0.50000000 2.5000000
0.50000000 3.5000000
0.50000000 4.5000000
0.50000000 5.5000000
0.50000000 6.5000000
0.50000000 7.5000000
0.50000000 8.5000000
0.50000000 9.5000000
0.50000000 10.500000
0.50000000 11.500000
0.50000000 12.500000
0.50000000 13.500000
0.50000000 14.500000
0.50000000 15.500000
1.5000000 0.50000000
1.5000000 1.5000000
1.5000000 2.5000000
1.5000000 3.5000000
1.5000000 4.5000000
1.5000000 5.5000000
1.5000000 6.5000000
1.5000000 7.5000000
1.5000000 8.5000000
1.5000000 9.5000000
1.5000000 10.500000
1.5000000 11.500000
1.5000000 12.500000
1.5000000 13.500000
1.5000000 14.500000
1.5000000 15.500000
2.5000000 0.50000000
2.5000000 1.5000000
2.5000000 2.5000000
2.5000000 3.5000000
2.5000000 4.5000000
2.5000000 5.5000000
2.5000000 6.5000000
2.5000000 7.5000000
2.5000000 8.5000000
2.5000000 9.5000000
2.5000000 10.500000
2.5000000 11.500000
2.5000000 12.500000
2.5000000 13.500000
2.5000000 14.500000
2.5000000 15.500000
3.5000000 0.50000000
3.5000000 1.5000000
3.5000000 2.5000000
3.5000000 3.5000000
3.5000000 4.5000000
3.5000000 5.5000000
3.5000000 6.5000000
3.5000000 7.5000000
3.5000000 8.5000000
3.5000000 9.5000000
3.5000000 10.500000
3.5000000 11.500000
3.5000000 12.500000
3.5000000 13.500000
3.5000000 14.500000
3.5000000 15.500000
4.5000000 0.50000000
4.5000000 1.5000000
4.5000000 2.5000000
4.5000000 3.5000000
4.5000000 4.5000000
4.5000000 5.5000000
4.5000000 6.5000000
4.5000000 7.5000000
4.5000000 8.5000000
4.5000000 9.5000000
4.5000000 10.500000
4.5000000 11.500000
4.5000000 12.500000
4.5000000 13.500000
4.5000000 14.500000
4.5000000 15.500000
5.5000000 0.50000000
5.5000000 1.5000000
5.5000000 2.5000000
5.5000000 3.5000000
5.5000000 4.5000000
5.5000000 5.5000000
5.5000000 6.5000000
5.5000000 7.5000000
5.5000000 8.5000000
5.5000000 9.5000000
5.5000000 10.500000
5.5000000 11.500000
5.5000000 12.500000
5.5000000 13.500000
5.5000000 14.500000
5.5000000 15.500000
then what am i do?
Matteo Lo Preti
Matteo Lo Preti 2020년 10월 4일
Hi, have a look at the inpolygon function!

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추가 답변 (1개)

Alan Stevens
Alan Stevens 2020년 10월 4일
You could also use the patch function
x = [0 0:30 30 0];
y = [0 10+exp((-(x(2:end-2)-15).^2)/10) 0 0];
patch(x,y,'r')

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