Willie Wheeler's personal blog. Mostly tech.
Playing with the quandmod package in R. It's been around for a while but for me it's shiny and new.
library("quantmod") getSymbols("EXPE", src="google")
candleChart(tail(EXPE, 200), multi.col=TRUE, theme="white")
It supports technical analysis too:
addBBands() # add Bollinger Bands addCCI() # add Commodity Channel Index