https://bl.ocks.org/kmandov/a1abe4aa380fb8b4bd0b4c081a76ce13
var series = [];
for (var i = 0, variance = 0; i < 1500; i++) {
variance += (Math.random() - 0.5) / 10;
series.push(Math.cos(i/100) + variance);
}
https://bl.ocks.org/kmandov/a1abe4aa380fb8b4bd0b4c081a76ce13
var series = [];
for (var i = 0, variance = 0; i < 1500; i++) {
variance += (Math.random() - 0.5) / 10;
series.push(Math.cos(i/100) + variance);
}