Spline

Property	Default	Meaning
points	[]	Ordered points; null and nonfinite values split the path
tension	1	Catmull–Rom tangent strength; 0 makes straight segments
closed	false	Close each finite run
space	Automatic	Use ambient data coordinates or local geometry

A cubic spline through points. tension defaults to 1; zero makes straight segments. closed joins the final point to the first. Null/nonfinite samples separate runs. Uniform Catmull–Rom tangents may overshoot sample extrema; inference covers samples. Custom endpoint directions and monotone interpolation are deferred.

Point inputs accept {x,y} or [x,y]; see Point values.

Inside Graph, numeric geometry uses data coordinates; outside it, geometry uses local fractions/px/em. space="local" opts out of an ambient graph, and space="data" requires one. Pixel strokes keep their size.

Projected point inputs also accept named numeric records such as {theta, r} or {x, y, z}; GeoMap uses {lon, lat}. Every dimension reaches the projection. See Projections for units and visibility rules.