rChartsCalmap

This is an htmlwidgets binding for the excellent Cal-Heatmap plugin, developed by Wan Qi Chen. This binding was motivated by a tweet by Alex Bresler and uses data provided by him on points scored by Paul George.

You can install it from github using devtools.

library(devtools)
install.packages('htmlwidgets')
install_github("ramnathv/rChartsCalmap")

Quick Start

Let us start with some data on points scored by Paul George.

dat <- read.csv('http://t.co/mN2RgcyQFc')[,c('date', 'pts')]
library(rChartsCalmap)
r1 <- calheatmap(x = 'date', y = 'pts',
  data = dat, 
  domain = 'month',
  start = "2012-10-27",
  legend = seq(10, 50, 10),
  itemName = 'point',
  range = 7
)
r1

Here is another example showing stock price of APPLE.

library(quantmod)
getSymbols("AAPL")
xts_to_df <- function(xt){
  data.frame(
    date = format(as.Date(index(xt)), '%Y-%m-%d'),
    coredata(xt)
  )
}

dat = xts_to_df(AAPL)
calheatmap('date', 'AAPL.Adjusted', 
  data = dat, 
  domain = 'month',
  legend = seq(500, 700, 40),
  start = '2014-01-01',
  itemName = '$$'
)