d3.interpolateBasis(values) Returns a uniform nonrational B-spline interpolator through the specified array of values
d3.interpolateObject(a, b) Returns an interpolator between the two objects a and b. Internally, an
d3.interpolateRgb(a, b)
d3.interpolateRgbBasisClosed(colors) Returns a uniform nonrational B-spline interpolator through the specified array of colors
d3.interpolateCubehelixLong(a, b)
d3.interpolateHcl(a, b)
d3.interpolateHslLong(a, b)
d3.interpolateHsl(a, b)
d3.interpolateRound(a, b) Returns an interpolator between the two numbers a and b; the interpolator
interpolate.gamma(gamma) Given that interpolate is one of
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