Update to metricsgraphics 0.9.0 (now on CRAN)

December 21, 2015
By

(This article was first published on R – rud.is, and kindly contributed to R-bloggers)

It’s been a while since I’ve updated my metricsgraphics package. The hit list for changes includes:

  • Fixes for the new ggplot2 release (metricsgraphics uses the movies data set which is now in ggplot2movies)
  • Updated all javascript libraries to the most recent versions
  • Borrowed the ability to add CSS rules to a widget from taucharts (mjs_add_css_rule)
  • Added a metricsgraphics plugin to enable line chart region annotation (mjs_annotate_region)
  • Enabled explicit coloring line/area charts (it was a new feature in the underlying Metrics-Graphics library)
  • You can use bare or quoted names when specifying the x & y accessors and can also use a variable name
  • You can now use the metricsgraphics title & description capabilities, but doing so voids any predictable/specified widget height/width and the description functionality is really only suited for bootstrap templates

I think all that can be demonstrated in the following snippet:

library(metricsgraphics)
 
dat <- read.csv("http://real-chart.finance.yahoo.com/table.csv?s=AAPL&a=07&b=9&c=1996&d=11&e=21&f=2015&g=d&ignore=.csv",
                stringsAsFactors=FALSE)
 
DATE <- "Date"
 
dat %>%
  filter(Date>="2008-01-01") %>% 
  mjs_plot(DATE, y="Low", title="AAPL Stock (2008-Present)", width=800, height=500) %>% 
  mjs_line(color="#6a3d9a") %>% 
  mjs_add_line(High, color="#ff7f00") %>% 
  mjs_axis_x(xax_format="date") %>% 
  mjs_add_css_rule("{{ID}} .blk { fill:black }") %>%
  mjs_annotate_region("2013-01-01", "2013-12-31", "Volatility", "blk") %>% 
  mjs_add_marker("2014-06-09", "Split") %>% 
  mjs_add_marker("2012-09-12", "iPhone 5") %>% 
  mjs_add_legend(c("Low", "High"))

NOTE: I’m still trying to figure out why WebKit on Safari renders the em dashes and Chrome does not.

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