roody questions

• Subset datasets by variable before using expand.grid to calculate distance matrix
• Conditionally remove Storefront handheld menu for a single page
• Using data.table to create a column of regression coefficients
• Matching and replacing strings from a list with another list in R
• Assigning values to rows from a vector
• Aggregating in R over 80K unique ID's
• Using `car` to recode across range of columns
• Creating categorical variables from mutually exclusive dummy variables
• Removing non-English text from Corpus in R using tm()
• How to winsorize (or remove univariate outliers) in a longitudinal dataset

roody answers