Shenglin Chen questions

Shenglin Chen answers

• Values in a column that are in a %
• R regex - match until first letter-space-digit combination from the end
• how to use select for multiple fields using dplyr
• R dplyr: how to remove smaller groups?
• Convert HH:MM:SS AM/PM string to time
• Replace variable name in string with variable value [R]
• R dplyr summarise one column value based on index of fun(another column)
• how to remove words of specific length in a string in R?
• Replacing the specific values in columns of data frame using gsub in R
• How to replace non integer values in a pandas Dataframe?