Top network posts

• 107 Automatically expanding an R factor into a collection of 1/0 indicator variables for every factor level
• 31 Need to export fields containing linebreaks as a CSV from SQL Server
• 21 Splitting a comma-separated field in Postgresql and doing a UNION ALL on all the resulting tables
• 19 Output a vector in R in the same format used for inputting it into R
• 18 Idiomatic R code for partitioning a vector by an index and performing an operation on that partition
• 16 Exempt code chunks in an Sweave document from emacs spell check
• 13 Supervised learning with "rare" events, when rarity is due to the large number of counter-factual events
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