Bryan Shalloway questions

Bryan Shalloway answers

• purl() within knit() duplicate label error
• cut extracting the minimum and maximum of cut levels as columns in data.frame
• debugging: function to create multiple lags for multiple columns (dplyr)
• Deleting reversed duplicates with R
• Using dplyr and broom to compute kmeans on a training and test set
• Which is the correct folder to store images used in vignettes for R packages ?
• Specify download folder in RSelenium does not work