Simplify Geometry¶
Use this dialog to simplify the geometry of lines and polygons using the Ramer–Douglas–Peucker algorithm.
Where to find the dialog¶
Right-click in the horizontal list field for lines and polygons, and select Tools - Simplify geometry...
Description¶
The algorithm reduces the number of points in a curve represented by a series of points. It starts by connecting the first and last points with a straight line, then finds the point farthest from this line. If the distance is greater than a given threshold (accuracy), the point is kept, and the process is repeated recursively for the new line segments.
Info
The algorithm is well illustrated on Wikipedia: Ramer–Douglas–Peucker algorithm.