Andy questions

Andy answers

• Set the scale in ggplot to be 1:1 in r
• Iteratively and efficiently adding elements to a list attribute of vertices in R igraph
• Creating a new dataframe based on another data frame (Using a loop or otherwise)
• R: Multiple lattice levelplots from matrices
• How to delete blank lines with readLines in R?
• frequency table with several variables in R
• retrieve row and column name of particular cell in R
• Filtering single-column data frames
• Replicate a list to create a list-of-lists
• How to avoid writing a row.names column when saving a data.frame using the xlsx package