Blog Archives

Shiny + archivist = reproducible interactive exploration

June 26, 2016
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Shiny + archivist = reproducible interactive exploration

Shiny is a great tool for interactive exploration (and not only for that). But, due to its architecture, all objects/results that are generated are stored in a separate R process so you cannot access them easily from your R console. In some cases you may wish to retrieve a model or a plot that you … Czytaj dalej...

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eRum 2016 — last days of call for papers

June 9, 2016
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eRum 2016 —  last days of call for papers

Only 6 days left to the end of the call for papers for eRum 2016! Register and submit your talk proposal at www.erum.ue.poznan.pl. European R users meeting will be a great place to learn and share ideas on R. Moreover, we have already confirmed the following invited talks: Browse Till You Die: Scalable Hierarchical Bayesian … Czytaj dalej...

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Frequency analysis challenge – a console-based game for R/python

June 6, 2016
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Frequency analysis challenge – a console-based game for R/python

Six months ago we’ve introduced ‘The Proton’ – a console based R game with six data wrangling puzzles. Around 15-30 minutes of fun with data. The game is on CRAN in the package BetaBit. And just few days ago we’ve added a second game – frequon(). Eight puzzles related with frequency analysis of encoded messages. … Czytaj dalej...

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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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