GuedesBF questions

GuedesBF answers

• Which and rowsums to select particular rows, however considering NAs
• How do you convert all numeric strings in a dataframe to numeric in R?
• Find the value of a column over a set of columns in a data frame in R
• Which is the fastest manner to the derive the conditional minimum value of an R data frame column?
• How to separate and extract numerical values from 1 column in a dataframe?
• In R, how create new dataframe with number of occurrences of each strings on other dataframe, like a product list and products in basket sold
• Group by and run multiple t tests in R
• Check if a dataframe column contains decimal values
• Remove Rows occurring after a String R Data frame
• Problem using lag() within a mutate() function (tidyverse)