h3rm4n questions

h3rm4n answers

• How do I get the column number from a dataframe which contains specific strings?
• Filter rows which has at least one of particular values
• Crop out ggplot2 whitespace around plot
• Convert list of vectors to data frame
• R: Summing a sequence of columns row-wise with dplyr
• dplyr - find all max-values of y column and the corresponding x-values