Articles by Peter Solymos

Progress bar overhead comparisons

October 15, 2016 | Peter Solymos

As a testament to my obsession with progress bars in R, here is a quick investigation about the overhead cost of drawing a progress bar during computations in R. I compared several approaches including my pbapply and Hadley Wickham’s plyr. [Read more...]

How to add pbapply to R packages

September 16, 2016 | Peter Solymos

As of today, there are 20 R packages that reverse depend/import/suggest (3/14/3) the pbapply package. Current and future package developers who decide to incorporate the progress bar using pbapply might want to customize the type and style of the progress bar in their packages to better suit the needs of ... [Read more...]

What is the cost of a progress bar in R?

September 11, 2016 | Peter Solymos

The pbapply R package adds progress bar to vectorized functions, like lapply. A feature request regarding progress bar for parallel functions has been sitting at the development GitHub repository for a few months. More recently, the author of the pbmcapply package dropped a note about his implementation of forking functionality ... [Read more...]

How to add pbapply to R packages?

September 6, 2016 | Peter Solymos

As of today, there are 20 R packages that reverse depend/import/suggest (3/14/3) the pbapply package. Current and future package developers who decide to incorporate the progress bar using pbapply might want to customize the type and style of the progress bar in their packages to better suit the needs of ... [Read more...]

Trends in daily R package downloads

August 23, 2016 | Peter Solymos

This post was prompted by this blog about using the cranlogs package by Gabor Csardi. But my own interest as long time package developer dates back to this post by Ben Bolker. I like to see that my packages are being used. So I thought why stop at counting downloads ... [Read more...]

Data set with all the conceivable errors

June 14, 2016 | Peter Solymos

As I was preparing for an R intro course I came up with the idea of creating a fake data set that is stuffed full of all the conceivable errors one can imagine. Just in case my imagination falls short, I’d appreciate all the suggestions in the comments so ... [Read more...]

Timer progress bar added to pbapply package

March 4, 2016 | Peter Solymos

pbapply is a lightweight R extension package that adds progress bar to vectorized R functions (*apply). The latest addition in version 1.2-0 is the timerProgressBar function which adds a text based progress bar with timer that all started with this pull request. [Read more...]

mefa4 R package update

March 2, 2016 | Peter Solymos

The mefa4 R package is aimed at efficient manipulation of very big data sets leveraging sparse matrices thanks to the Matrix package. The recent update (version 0.3-3) of the package includes a bugfix and few new functions to compare sets and finding dominant features in compositional data as described in ... [Read more...]

Budapest Use R!

July 16, 2014 | Peter Solymos

I presented a guest lecture ‘Data cloning: bridging the Bayesian and frequentist statistical paradigms’, at the Budapest R User Group meetup, Budapest, Hungary. [Read more...]

ISEC 2014 in Montpellier

July 1, 2014 | Peter Solymos

Discussing problems vs. finding solutions: an operational framework for dealing with imperfect detection in species distribution modelling, International Statistical Ecology Conference 2014, Montpellier, France. [Read more...]
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