D3: Create a continuous color scale with many strings/inputs for the range and dynamically changing values of the domain

Question

I am trying to create a linear color scale for a heatmap. I want to color scale to go through a large set of specific colors, where the first color corresponds to the min of the

Answer 1

Use threshold scales. Here is a quick example:

coffee> d3 = require 'd3'
coffee> color = d3.scale.threshold().domain([5,30,100]).range(["red","orange","green"]);
coffee> color 6
'orange'
coffee> color 3
'red'
coffee> color 33
'green'