function faster than inpolygon()?

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Reema Alhassan 2018-7-3

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https://ww2.mathworks.cn/matlabcentral/answers/408537-function-faster-than-inpolygon

评论： Reema Alhassan 2018-7-3

Is there a function faster than inpolygon()? or another way to do the intersection ? because it sometimes takes too much time (the program sill busy forever ).

Thank you.

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KSSV 2018-7-3

intersection? How you are using inpolygon?

Reema Alhassan 2018-7-3

在 MATLAB Online 中打开

here is the code to understand what I mean :

[A,x,y,I]=geoimread('Cutted1.tif')
rx = shape(1).X(1:end-1);
ry = shape(1).Y(1:end-1);
[X,Y] = meshgrid(x,y);
mask =inpolygon(X,Y,rx,ry);
result= mask.*A;