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How are the Paths specified in PostgreSQL geometric types?
Paths can be open, where the first and last points in the list are considered not connected, or closed, where the first and last points are considered connected. Values of type path are specified using any of the following syntaxes: where the points are the end points of the line segments comprising the path.
How is a line segment represented in PostgreSQL?
Line segments are represented by pairs of points that are the endpoints of the segment. Values of type lseg are specified using any of the following syntaxes: where (x1,y1) and (x2,y2) are the end points of the line segment. Line segments are output using the first syntax.
How are type points specified in PostgreSQL 9.5?
Values of type point are specified using either of the following syntaxes: where x and y are the respective coordinates, as floating-point numbers. Points are output using the first syntax. 8.8.2. Lines Lines are represented by the linear equation A x + B y + C = 0, where A and B are not both zero.
How do you represent a circle in PostgreSQL?
Circles are represented by a center point and radius. Values of type circle are specified using any of the following syntaxes: < (x, y), r > ((x, y), r) (x, y), r x, y, r where (x,y) is the center point and r is the radius of the circle.
How are the values of polygons specified in PostgreSQL?
Values of type polygon are specified using any of the following syntaxes: where the points are the end points of the line segments comprising the boundary of the polygon. Polygons are output using the first syntax.
How to create a type box in PostgreSQL?
Values of type box are specified using any of the following syntaxes: where (x1,y1) and (x2,y2) are any two opposite corners of the box. Boxes are output using the second syntax. Any two opposite corners can be supplied on input, but the values will be reordered as needed to store the upper right and lower left corners, in that order.