points2d

A point is defined by its two cartesian coordinate, put into a row vector of 2 elements:

P = [x y];

Collections of points are stored in a matrix with two columns, one for the x-coordinate, one for the y-coordinate.

PTS = [x1 y1 ; x2 y2 ; x3 y3];

Example:

P = [5 6];

Functions operating on points

centroid              - Compute centroid (center of mass) of a set of points
midPoint              - Middle point of two points or of an edge
boundingBox           - Bounding box of a set of points
clipPoints            - Clip a set of points by a box
circumCenter          - Circumcenter of three points
isCounterClockwise    - Compute relative orientation of 3 points
polarPoint            - Create a point from polar coordinates (rho + theta)
angle2Points          - Compute horizontal angle between 2 points
angle3Points          - Compute oriented angle made by 3 points
angleSort             - Sort points in the plane according to their angle to origin
distancePoints        - Compute distance between two points
minDistancePoints     - Minimal distance between several points
hausdorffDistance     - Hausdorff distance between two point sets
nndist                - Nearest-neighbor distances of each point in a set
transformPoint        - Transform a point with an affine transform
drawPoint             - Draw the point on the axis.

See Also

• vectors2d