The R package
bfast enthralls me. I have posted 3 times on
bfast but still did not understand the impact of the
h parameter. Armed now with some d3.js, angular.js, and rCharts I thought I could see it better with a fancy interactive visualization. Here is the result when applied to the S&P 500 monthly price series since 1950. You should see it embedded in an iframe below. For the full effect, click here.