subsetting code snippets in r

create sub dataframe according to columns values in r

delete empty rows in r

divide row by another row if it is a certain comun in r

filter a dataframe based on two values from a column in r

filter a dataframe from a specific value in a column in r

get the first element of the first list in a list of 48 lists. in r

how to get 10th item from 2nd column in r

select all the col in df exept the last in r

select columns from a df in r

subset a list using time in r

subset of variable whose names contain pattern in r

subset of variables that have pattern in r

subset using loop in r in r

write me how to keep all the column from a df containing the word "blank" in r