A puzzling Le Monde mathematical puzzle for which I could find no answer in the allotted time!: A most democratic electoral system allows every voter to have at least one representative by having each of the N voters picking exactly m candidates among the M running candidates and setting the ...

A brandnew and very exciting (to us, at least) package called pinp just arrived on CRAN, following a somewhat unnecessarily long passage out of incoming. It is based on the PNAS LaTeX Style offered by the Proceeding of the National Academy of Science...

Creating a meaningful visualization from data with long lists can be challenging. While word clouds are often the popular choice, they are not always the best option. This post illustrates seven alternatives to word clouds...

I’ve blathered about trust before 1 2, but said blatherings were in a “what if” context. Unfortunately, the if has turned into a when, which begged for further blathering on a recent FOSS ecosystem cybersecurity incident. The gg_spiffy @thomasp85 linked to a post by the SK-CSIRT detailing the discovery and ...

I’m working on the next update of my sjPlot-package, which will get a generic plot_model() method, which plots any kind of regression model, with different plot types being supported (forest plots for estimates, marginal effects and predictions, including displaying interaction terms, …). The package also supports rstan resp. rstanarm ...

Before we begin working on the specifics of our data project, it is important to have a clear understanding of some of the basic concepts that need to be in place to guide our work. In this post I will cover some of these topics including the impor...

I know there are plenty of these online, but I just thought about having my own for quick reference…

ncols <- ceiling(sqrt(length(colors())))^2
dat <- matrix(1:ncols, sqrt(ncols))
image(dat, col = colors()[1:ncols])
pos <- seq(0, 1, length.out = sqrt(ncols))
pos <- lapply(pos, function(x) cbind(x, pos))
pos <- do.call(rbind, pos)

ncols <- length(colors())
text(x=pos[1:ncols,2], y=pos[1:ncols,1], labels = 1:ncols, cex=.75, srt=60)

A collection of liars in this Le Monde mathematical puzzle: A circle of 16 liars and truth-tellers is such that everyone states that their immediate neighbours are both liars. How many liars can there be? A circle of 12 liars and truth-tellers is such that everyone state that their immediate neighbours are ...