Dave2e questions

Dave2e answers

• Concatenate all except last two columns in R
• Boxplots in R, plotting multiple points
• ggplot2 warning "removed x rows containing missing values" when drop = FALSE
• Vector of elements not being updated within loop
• How to create blanks for certain entries in a data frame in R?
• How to create function of tossing coin R
• In R, how would I tidy CSV data spread among multiple rows and columns into a three column format?
• Extract best match from string-distance matrix
• How to assign values to levels in factors?
• Getting uneven elements in XML file into dataframe