D3 no longer provides the d3.schemeCategory20* categorical color schemes. These twenty-color schemes were flawed because their grouped design could falsely imply relationships in the data: a shared hue can imply that the encoded data are part of a group (a super-category), while relative lightness can imply order
To get it to work, I changed it to:
var colors = d3.schemeCategory10;
var colorIndex = Math.round(Math.random() *10);
The original code for
freakout()
has:For D3v5 and newer:
To get it to work, I changed it to: