Marek questions

Marek answers

• Extracting indices for data frame rows that have MAX value for named field
• Trying to loop through a dataframe and reference multiple fields
• Replace values in a dataframe based on another factor which contains NA's in R
• How to Plot "Reverse" Cumulative Frequency Graph With ECDF
• draw one or more plots in the same window
• What does the rpart "Error in as.character(x) : cannot coerce type 'builtin' to vector of type 'character' " message mean?
• Transparent way to deal with data files larger then memory? [duplicate]
• How to count the number of combinations of boolean data in R
• Write list of data.frames to separate CSV files with lapply
• package 'stringi' does not work after updating to R3.2.1