Matching X and Y co-ordinated from the reference xy
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Hi,
I have list of XY coordinates i.e XY points for the given figure.
further i have extracted the required XY coordinates and now i want to match my current XY values present in reference XY coordinates, is it possible ?
could you please do help me here.
e.g
X = [ 1,2,3,4,5,6,7.6 , 8.9, 5.7 ..]
X = [1, 4,6,9,3,7.6,5.3.5.7... ]
so i want to compare this and get the result with the matched values i.e
final X = [7.6,5.7]
is there a way to do this ?
thank you.
2 Comments
Accepted Answer
Rik
on 9 Dec 2019
Edited: Rik
on 9 Dec 2019
3 Comments
Rik
on 9 Dec 2019
Edited: Rik
on 9 Dec 2019
So you have a list of coordinates that form the boundary of an object? If you have a closed loop, you can use the inpolygon function to find all grid points inside your trace.
%generate an outline
u=20;
t=linspace(0,2*pi,6);x=u+u*cos(t);y=u+20*sin(t);
[X,Y]=ndgrid(1:(2*u));
L=inpolygon(X(:),Y(:),x,y);
X_in=X(L);
Y_in=Y(L);
figure(1),clf(1)
plot(x,y,'b')
hold on
plot(X(L),Y(L),'r*')
plot(X(~L),Y(~L),'r.')
axis([0 2*u+1 0 2*u+1]) %fit axis to displayed data
daspect([1 1 1])%set aspect ratio to 1
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