# Polycut2

Version 1.1.0.0 (5.82 KB) by
Remove polygon holes by connecting contours and holes
Updated 13 Oct 2015

POLYCUT2(lat,long) connects the contour and holes of polygons. In contrast to POLYCUT, POLYCUT2 finds an output polygon with smaller total contour length and avoids cases where the cuts interesect with the polygon contours.
Example:
% outer contour
ov = [0,0; 0,1; 2,1; 2,2; 0,2; 0,3; 3,3; 3,0];
% hole 1
iv1 = [0.5,0.3; 1.5,0.3; 1.5,0.7; 0.5,0.7];
% hole 2
iv2 = [0.5,2.3; 1.5,2.3; 1.5,2.7; 0.5,2.7];
v = [ov;nan(1,2);iv1;nan(1,2);iv2];
[v1(:,1),v1(:,2)] = polycut(v(:,1),v(:,2));
[v2(:,1),v2(:,2)] = polycut2(v(:,1),v(:,2));

% red is old method, blue is new one
figure;
line(v1(:,1),v1(:,2),'Color','red');
figure;
line(v2(:,1),v2(:,2),'Color','blue');

### Cite As

Paul (2024). Polycut2 (https://www.mathworks.com/matlabcentral/fileexchange/53469-polycut2), MATLAB Central File Exchange. Retrieved .

##### MATLAB Release Compatibility
Created with R2015a
Compatible with any release
##### Platform Compatibility
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Version Published Release Notes
1.1.0.0

Fixed case with degenerate holes (< 2 vertices)

1.0.0.0