Blog Archives

All your models belong to us: how to combine package archivist and function trace()

May 13, 2016
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Let’s see how to collect all linear regression models that you will ever create in R. It’s easy with the trace() function. A really powerful, yet not that popular function, that allows you to inject any R code in any point of a body of any function. Useful in debugging and have other interesting applications. … Czytaj dalej...

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Call for Papers: eRum 2016 (European R users meeting)

April 28, 2016
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Call for Papers: eRum 2016 (European R users meeting)

The European R users meeting (eRum) is an international conference that aims at integrating users of the R language. eRum 2016 will be held on October 13 and 14, 2016, in Poznan, Poland at the Poznan University of Economics and Business. We already confirm the following invited speakers: Rasmus Bååth, Romain Francois, Ulrike Grömping, Matthias … Czytaj dalej...

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European R users meeting / meeting of R heroes / Poznań 12-14.10.2016

March 22, 2016
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European R users meeting / meeting of R heroes / Poznań 12-14.10.2016

European R users meeting (eRum 2016) will take place between October 12th and 14th. We already have confirmed great invited speakers such as: Rasmus Bååth, Romain François, Ulrike Grömping, Matthias Templ, and Heather Turner, as well as strong representation from Poland: Przemysław Biecek (omg, it’s me!), Marek Gągolewski, Jakub Glinka, Katarzyna Kopczewska, and Katarzyna Stąpor. … Czytaj dalej...

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Why should you backup your R objects?

February 18, 2016
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Why should you backup your R objects?

There is a saying that there are two groups of people: those who are already doing backups and those who will. So, how this is linked with reproducible research and R? If your work is to analyze data then you often face a need to restore/recreate/update results that you have generated some time ago. You … Czytaj dalej...

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Warsaw Meetings of R Users / Warszawskie Spotkania Entuzjastów R

September 20, 2015
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Warsaw Meetings of R Users / Warszawskie Spotkania Entuzjastów R

With the summer holiday season coming to an end, we are back with Warsaw Meetings of R Users (Warszawskie Spotkania Entuzjastów R). Three meetings ahead: September 26 th (this Saturday) – let’s start with data-hack-day (DHD). Having data from Polish Seym (votes and transcripts), we are going to prepare some nice summaries of last cadency. … Czytaj dalej...

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Interview with SERATRON – Lego EV3 robot driven by R

November 30, 2014
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Interview with SERATRON – Lego EV3 robot driven by R

Next meeting of Warsaw R Enthusiasts (SER = Spotkania Entuzjastów R) will take place on December 8. We are going to start with Roger Bivand talk about spatial statitics (R Foundation / NHH, author of many R packages). The second talk, by Bartosz Meglicki (IPI PAN), will introduce the SERATRON – fusion of R and

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Variability of weather forecasts

November 2, 2014
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Variability of weather forecasts

Have you wondered how stable are weather forecasts? Since curiosity + R = fun, let’s do a little test. I’ve used a function getWeatherForecast {SmarterPoland} (github release) to download weather forecasts from the Dark Sky API. Hourly forecasts are downloaded every 10 minutes and stored in this repository based on archivist package (it’s easier to

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Lazy load with archivist

September 22, 2014
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Lazy load with archivist

Version 1.1 of the archivist package reached CRAN few days ago. This package supports operations on disk based repository of R objects. It makes the storing, restoring and searching for an R objects easy (searching with the use of meta information). Want to share your object with article reviewers or collaborators? This package should help.

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Parameterized SQL queries

August 5, 2014
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Mateusz Żółtak asked me to spread the word about his new R package for parameterized SQL queries. Below you can find the copy of package vignette. If you work with SQL in R you may find it useful. Mateusz Żółtak The package RODBCext is an extension of the RODBC database connectivity package. It provides support

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Submissions in the DataVis contest at useR!2014

June 30, 2014
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Wonder how submissions to the DataVis contest at useR!2014 (see contest webpage) look like? There are 8 submissions in the track 1 (schools matter) and 10 submissions in the track 2 (inequalities in academic achievement). You can see all submissions (w...

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