Data for the trends and activities summarized here were obtained from popular websites used by the R community such as Google, GitHub, StackOverflow, Rstudio, METACRAN and R-Bloggers StackOverflow Number of StackOverflow Questions tagged R: 4,565 (8%  down from July) Number of Answers for R questions: 4,630 (3%  up from... Read more

Miles McBain has a nice post about quoting in R and the tidyeval procedure. In it, there’s this footnote In truth there are other types of calls, and the ones Lisp nuts really bang on about are macro calls In this post I want to talk about the similarities... Read more

In the ‘regression tests’ that are part of any change to the base-R source code, there’s a file called p-r-random-tests.R. People notice it from time to time because the tests sometimes fail. That’s what is supposed to happen. Testing random number generators is hard, because it’s hard to specify what... Read more

Hi there! tl;dr: Exploratory data analysis (EDA) the very first step in a data project. We will create a code-template to achieve this with one function. Introduction EDA consists of univariate (1-variable) and bivariate (2-variables) analysis. In this post we will review some functions that lead us to the... Read more

The following code example contains an easy error in using the R function unique(). vec1 <- c("a", "b", "c") vec2 <- c("c", "d") unique(vec1, vec2) # "a" "b" "c" Notice none of the novel values from vec2 are present in the result. Our mistake was: we (improperly) tried to use unique() with multiple value arguments,... Read more

R Tip: use isTRUE(). A lot of R functions are type unstable, which means they return different types or classes depending on details of their values. For example consider all.equal(), it returns the logical value TRUEwhen the items being compared are equal: all.equal(1:3, c(1, 2, 3)) # TRUE However, when the items being compared... Read more