Publications by smarterpoland
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 e...
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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 Lego Mindstorms. Below we publis...
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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. E...
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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 may think ,,I have a knitr reports for ever...
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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, ...
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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...
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All your models belong to us: how to combine package archivist and function trace()
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. Below I will show how to use this...
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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. It’s much harder tha...
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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 Modeling of cookie de...
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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 have just generated. Or maybe just wish to store...
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