Errata

On page 32, it says:
"You just want that one value: maximum temperature." The Python code actually scrapes the average max temperature though. If you want just maximum temperature, you should update the nobrs index accordingly. Please keep in mind that the HTML page on Weather Underground could change, too, but the process is still the same.

On page 159, the third line of code reads:
map.market(id=data$id, area=posts$views, group=posts$category, color=posts$comments, main="FlowingData Map")

However, it should be:
map.market(id=posts$id, area=posts$views, group=posts$category, color=posts$comments, main="FlowingData Map")

Page 309: It says "fist store that opened..." instead of "first store that opened..."

Please report mistakes or fixes to me at nathan@flowingdata.com. Thanks. — Nathan