how to use a polybuffer without changing the polygon's shape?
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I've used polybuffer. but when the d(distance) is a largen number, the buffer is someting like circle(round).
so I used sqaure too, but it retunred hexagon, not a rectangular even i made a polygon with 4 coordinates.
This is what i want. I want the polybuffer to be as same shape as a polygon.