bob questions

• Grouping by year in R
• Instability of nonlinear mixed effects (using nlme package) in R
• Iterating through a javascript object to get key-value pairs
• Mutate new column based on moving window of fixed date interval size, in R
• Checking if there exists a value in vector of dates that lies within a given range
• Parallel processing in R - setting seed with mclapply() vs. pbmclapply()

bob answers