Dollar sign before a variable...

Subset rows in a data frame based on a vector of values...

Use of ~ (tilde) in R programming Language...

R memory management / cannot allocate vector of size n Mb...

Row-wise count of values that fulfill a condition...

subset rows with (1) ALL and (2) ANY columns larger than a specific value...

Only read selected columns...

do-while loop in R...

How to perform natural (lexicographic) sorting in R?...

How to check the OS within R...

What's the biggest R-gotcha you've run across?...

Debugging unexpected errors in R -- how can I find where the error occurred?...

Why can't R's ifelse statements return vectors?...

Subset data frame based on number of rows per group...

Why does summarize or mutate not work with group_by when I load `plyr` after `dplyr`?...

How to order data by value within ggplot facets...

Read SAS sas7bdat data into R...

Remove backslashes from character string...

Index values from a matrix using row, col indices...

Issue when passing variable with dollar sign notation ($) to aes() in combination with facet_grid() ...

Create an empty data.frame...

Convert integer to class Date...

Filter data.frame rows by a logical condition...

Warning message: In `...` : invalid factor level, NA generated...

What are the differences between concatenating strings with cat() and paste()?...

How should I deal with "'someFunction' is not an exported object from 'namespace:so...

Storing R Objects in a relational database...

How to find common elements from multiple vectors?...

Understanding the order() function...

Logical operators (AND, OR) with NA, TRUE and FALSE...