Create an ID (row number) column...

Vectorized IF statement in R?...

Error in if/while (condition) {: missing Value where TRUE/FALSE needed...

Finding All Positions for Multiple Elements in a Vector...

acos(1) returns NaN for some values, not others...

Controlling number of decimal digits in print output in R...

How to read data when some numbers contain commas as thousand separator?...

ggplot2 line chart gives "geom_path: Each group consist of only one observation. Do you need to...

A comprehensive survey of the types of things in R; 'mode' and 'class' and 'type...

General suggestions for debugging in R...

Convert date-time string to class Date...

Convert data.frame column format from character to factor...

The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or ...

Reshaping multiple sets of measurement columns (wide format) into single columns (long format)...

Plot multiple columns on the same graph in R...

Drop unused factor levels in a subsetted data frame...

Fitting a density curve to a histogram in R...

Quickly reading very large tables as dataframes...

R: How to handle times without dates?...

Reorder levels of a factor without changing order of values...

Re-ordering factor levels in data frame...

How to get help in R?...

Confusion between factor levels and factor labels...

rank and order in R...

How to remove all whitespace from a string?...

Convert UNIX epoch to Date object...

Group by multiple columns in dplyr, using string vector input...

Why is `vapply` safer than `sapply`?...

What are the main differences between R data files?...

List distinct values in a vector in R...