Last Updated: July 14, 2018
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d3.js interpolation options

  • linear - piecewise linear segments, as in a polyline.
  • linear-closed - close the linear segments to form a polygon.
  • step-before - alternate between vertical and horizontal segments, as in a step function.
  • step-after - alternate between horizontal and vertical segments, as in a step function.
  • basis - a B-spline, with control point duplication on the ends.
  • basis-open - an open B-spline; may not intersect the start or end.
  • basis-closed - a closed B-spline, as in a loop.
  • bundle - equivalent to basis, except the tension parameter is used to straighten the spline.
  • cardinal - a Cardinal spline, with control point duplication on the ends.
  • cardinal-open - an open Cardinal spline; may not intersect the start or end, but will intersect other control points.
  • cardinal-closed - a closed Cardinal spline, as in a loop.
  • monotone - cubic interpolation that preserves monotonicity in y.

From: https://github.com/mbostock/d3/wiki/SVG-Shapes#wiki-line_interpolate