Posts

Posts from the R category are syndicated on R Bloggers.

Mastodon author attribution for a Quarto blog

Mastodon

Quarto

Now that Mastodon 4.3 has been released, it makes sense to think about one of the new features there: Author attribution. The idea is, that when a link from a website is…

Algorithms for weighted sampling without replacement (Part 1)

RNG

R

Some time ago I learned from a blog post by Thomas Lumley that R uses “sequential sampling” when using weighted sampling without replacement. As a consequence, the…

Using tikzDevice with Quarto documents

R

CRAN

package

LaTeX

Quarto

Recently Esther posted about something that is dear to my heart. Keeping fonts in sync between text and graphics:

dqrng v0.4.1

R

CRAN

package

Only two weeks after version 0.4.0 I had to publish version 0.4.1 of dqrng on CRAN.

dqrng v0.4.0

R

CRAN

package

Today dqrng version 0.4.0 has been published on CRAN and is now propagating through the mirrors. At the moment we are still working through some breakage with reverse…

Upcoming changes in dqrng

R

CRAN

package

The next version of dqrng is going to include many changes, so it might make sense to start blogging about them before the actual release. This release will be version 0.4.0…

Migrating to quarto

R

Quarto

Late to the party I have also migrated my blog to Quarto:

Bug fixes for dqrng and tikzDevice

CRAN

R

package

Today dqrng version 0.3.2 made it unto CRAN and is now propagating to the mirrors. In addition tikzDevice version 0.12.6 made it unto CRAN as well. Both releases are minor…

Algorithms for unweighted sampling without replacement

R

RNG

Numerics

package

I am currently working on weighted sampling for dqrng, c.f. #72, for which also have to decide on the algorithm(s) to use for weighted sampling without replacement. Before…

Using dqrng as user-supplied RNG

R

RNG

package

My dqrng package has some quite old issues, one is “More distribution functions” where I brought forward the idea to support additional distribution functions within dqrng…

Roulette-wheel selection for dqrng (part 2)

R

RNG

package

I have blogged about weighted sampling before. There I found that the stochastic acceptance method suggested by Lipowski and Lipowska (2012) (also at https://arxiv.org/abs/11…

Choosing a new default RNG for dqrng

R

RNG

package

Currently the dqrng package supports only xoroshiro128+ and xoshiro256+ from https://prng.di.unimi.it/ (see also Blackman and Vigna 2021). These RNGs should only be used for…

dqrng v0.3.1 and tikzDevice v0.12.5

CRAN

package

R

Today dqrng version 0.3.1 made it unto CRAN and is now propagating to the mirrors.

swephR v0.3.1

CRAN

package

R

This morning swephR version 0.3.1 made it unto CRAN and is now propagating to the mirrors.

Share on Mastodon using Tootpick

Mastodon

In addition to other social media sites I wanted to enable sharing on Mastodon as well. The main difficulty is that as part of the Fediverse there is no central server that…

tikzDevice v0.12.4

R

package

LaTeX

CRAN

Yesterday tikzDevice version 0.12.4 made it unto CRAN and is now propagating to the mirrors.

Roulette-wheel selection for dqrng

R

RNG

package

There is a long standing issue with my {dqrng} package: weighted sampling. Since implementing fast un-weighted sampling methods quite some time ago, I have now started…

dqrng v0.3.0

package

R

RNG

Today dqrng version 0.3.0 made it unto CRAN and is now propagating to the mirrors.

swephR v0.3.0

CRAN

package

R

This afternoon swephR version 0.3.0 made it unto CRAN and is now propagating to the mirrors.

tikzDevice v0.12.3

R

package

LaTeX

CRAN

Yesterday tikzDevice version 0.12.3 made it unto CRAN and is now propagating to the mirrors.

XY problems

C++

R

Rcpp

One can easily fall for an XY problem even when one tries to avoid it.

Numerical integration over an infinite interval in Rcpp (part 2)

R

Numerics

Rcpp

In a previous post I have shown that without intervention RcppNumerical does not handle integration over infinite ranges. In this post I want to generalize the method to integrals where only one of the limits is infinite. In addition, I want to make it more user friendly.

swephR v0.2.1

R

package

This morning swephR version 0.2.1 made it unto CRAN and is now propagating to the mirrors.

swephR v0.2.0

R

package

This morning swephR version 0.2.0 made it unto CRAN and is now propagating to the mirrors.

Numerical integration over an infinite interval in Rcpp

R

Rcpp

Numerics

C++

On Stack Overflow the question was asked how to numerically integrate a function over a infinite range in Rcpp, e.g. by using RcppNumerical. As an example, the integral

RcppArrayFire v0.1.0: Sparse Matrices and support for Mac OS

R

ArrayFire

GPU

package

The RcppArrayFire package provides an interface from R to and from the ArrayFire library, an open source library that can make use of GPUs and other hardware accelerators…

Using qpdfview with AUCTeX

emacs

LaTeX

AUCTeX

I recently set up a new computer using Debian Buster with LXQt as desktop environment, which uses qpdfview as default PDF viewer. Obviously I wanted to make use of it when…

dqrng v0.2.1

R

RNG

I have blogged about dqrng before, but I forgot to write about the v0.2.0 release, even though that brought a lot of changes including the fast sampling methods to CRAN: