Errata

Chapter 5

Section 5.3.3, foot of page 147, code chunk 72, tabulation of five number summaries. Because over() now returns a data frame, the coordinates method fails for extracting the number of data objects returned; corrected in cm2_mod.R. Page 143, Chunk 57: maptools should be loaded explicitly. Page 145-146: From version 2.3-0 of raster (released 6 Sptember 2014), the argument small=FALSE should be added to match the over method in sp; before 2.3-0, the default was FALSE, but was changed to TRUE at this release.