reshape2

Simplest possible heatmap with ggplot2

September 27, 2012 | is.R()

Featuring the lovely “spectral” palette from Colorbrewer. This really just serves as a reminder of how to do four things I frequently want to do: Make a heatmap of some kind of matrix, often a square correlation matrix Reorder a factor vari... [Read more...]

Visually-weighted regression plots, with Zelig

September 25, 2012 | is.R()

As a follow-up to yesterday’s post on producing visually-weighted regression plots, here is some code which illustrates the production of similar plots, but using Zelig’s convenient modeling and simulation functions. This code was produced... [Read more...]

Simple visually-weighted regression plots

September 24, 2012 | is.R()

There has recently been a lot of discussion of so-called “visually-weighted regression” plots. Folk hero Hadley Wickham suggests that such plots would be easy to implement with ggplot2, and so I have attempted to prove him right. The approa... [Read more...]

Good riddance to Excel pivot tables

January 30, 2011 | Scott Chamberlain

Excel pivot tables have been how I have reorganized data...up until now. These are just a couple of examples why R is superior to Excel for reorganizing data:################ Good riddance to pivot tables ############library(reshape2)library(plyr)&nbsp...
[Read more...]

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