(d3.scaleBivariate = function () {
function scaleBivariate(value) {
var r = reds(value[0]);
var b = blues(value[1]);
return "rgb(" + r + "," + (r + b) / 2 + "," + b + ")";
}
var blues = d3
.scaleThreshold()
.range([255, 205, 155, 105, 55])
.domain([0, 1, 2, 3, 4, 5]);
var reds = d3
.scaleThreshold()
.range([255, 205, 155, 105, 55])
.domain([0, 1, 2, 3, 4, 5]);
return scaleBivariate;
})