A `Curve`

is a one-dimensional geometry,
usually represented by a sequence of points. Particular
subclasses of `Curve`

define the type of
interpolation between points. `Curve`

is a
noninstantiable class.

`Curve`

Properties

A

`Curve`

has the coordinates of its points.A

`Curve`

is defined as a one-dimensional geometry.A

`Curve`

is simple if it does not pass through the same point twice, with the exception that a curve can still be simple if the start and end points are the same.A

`Curve`

is closed if its start point is equal to its endpoint.The boundary of a closed

`Curve`

is empty.The boundary of a nonclosed

`Curve`

consists of its two endpoints.A

`Curve`

that is simple and closed is a`LinearRing`

.