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ggplot2

ggplot2 and the grammar of graphics

September 22, 2009 by David Smith
with 157 views
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I really enjoyed Hadley Wickham's talk for the Bay Area UseR group last week. I've really been getting into ggplot2 lately, but it was Hadley's example of plotting housing sales data for the San Francisco area really made it click for me. When you first start using ggplot2, the syntax can seem a little, well, arcane: rather than using... [read more]

Interactive stock visualizations with R

September 7, 2009 by David Smith
with 159 views
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Jeroen Ooms, who recently completed his Masters in Statistics at Utrech University, has created an outstanding web-based drag-and-drop application for visualizing financial data. With his "StockPlot" t application, you can select any stock from a number of world exchanges (including NASDAQ, DAX, FTSE), and drag it to a worksheet to see... [read more]

Lattice and ggplot graphics, side by side

July 9, 2009 by David Smith
with 204 views
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One of the confusing things about R for newcomers is the graphics system. Or rather, systems: there are three major ways of creating a graph in R. There's the base graphics system, which was adopted from S and has been in R from the beginning, and is documented in the Introduction to R manual. But all the cool R programmers these days... [read more]