How do i extract points from roi using roipoly?

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Prakash Raut 2020-10-29

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https://ww2.mathworks.cn/matlabcentral/answers/630728-how-do-i-extract-points-from-roi-using-roipoly

编辑： Prakash Raut 2020-10-30

1.jpg

So i have set of random x and y cordinate , i draw roi by roipoly. How can i just get the x and y coordinates of the points that are inside of roi( as shown in attached)? or any other way i could do ?

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Cris LaPierre 2020-10-30

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Assign the output of roipoly to a variable. See the syntax section of the documentation page. You probably want the following syntax:

[BW,xi2,yi2] = roipoly(___)

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Prakash Raut 2020-10-30

Thanks Cris for your reply but i want to extract coordinates of points that are inside the roi (see attached), not the coordinates of the polygon(roi). Any suggestion would be really helpful.