An upgrade of mbostock‘s block: Heatmap (2D Histogram, CSV) to D3 4.0, with the addition of a select menu for D3 Sequential Scale Interpolators. Inspired by d3-scale issue: sequential.interpolate? #67. Draws the idea of trying out color schemes from colorbrewer2.org.
Also includes scales from d3-scale-chromatic.
forked from curran‘s block: Heatmap (2D Histogram, CSV) 4.0