d3.interpolateRound(a, b) Returns an interpolator between the two numbers a and b; the interpolator
d3.interpolateTransformCss(a, b) Returns an interpolator between the two 2D CSS transforms represented by a
d3.interpolateHclLong(a, b)
d3.interpolateRgbBasis(colors) Returns a uniform nonrational B-spline interpolator through the specified array of colors
d3.interpolateCubehelix(a, b)
d3.interpolateTransformSvg(a, b) Returns an interpolator between the two 2D SVG transforms represented by a
d3.interpolateBasisClosed(values) Returns a uniform nonrational B-spline interpolator through the specified array of values
d3.interpolateZoom(a, b) Returns an interpolator between the two views a and b of a two-dimensional
d3.interpolate(a, b) Returns an interpolator between the two arbitrary values a and b. The interpolator
d3.interpolateDate(a, b) Returns an interpolator between the two
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