Publications by Marcin Kosiński
What Every R Package Must (REALLY) Contain? An Example on the eRum2016 Package
The R package development is a complex process of creating (mostly) a useful software, that will (probably) be used by other users. This means the provided tool should be resistant, immune, well tested and properly documented. Developers from many different languages have invented various approaches to improve software development, creating docu...
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Monitoring R Applications with RZabbix
As R users we mostly perform analysis, produce reports and create interactive shiny applications. Those are rather one-time performances. Sometimes, however, the R developer enters the world of the real software development, where R applications should be distributed and maintained on many machines. Then one really appreciates the value of a pro...
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Warsaw R Enthusiast Meetups Season Finale
Warsaw R and Data Analytics Enthusiast group is an effort that aims at integrating users of the R language in Warsaw, Poland. Our group has over 970 members at its meetup page. In this post I provide a summary of our group, our last 2 meetups before this season ending and I present plans for the future. Check who we are, what are we talking abou...
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Rocker – explanation and motivation for Docker containers usage in applications development
What is R? I was asked at the end of my presentation on the 10th Cracow R Users Meetup that was held last Friday (30.09.2016). I felt strange but absolutely confirmed that R is the language of Data Science and is designed to performed the statistical data analysis. Later I found out that few of listeners came to the meetup to listen more about D...
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Warsaw R-Ladies
First Warsaw R-Ladies Workshops were held yesterday! Over 100 R-Ladies have registered for the event! In this post I present notes from this meeting and provide some pictures of the beauty part of R. You can also learn a bit about the gender gap in the R community. Heather Turner has addressed the gender gap during her presentation at the Europ...
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Mini R Quizzes
Data Science is sometimes a stressful and responsible job… so we spontaneously organize mini R quizzes in our R team at the company! Chaining R packages One of my favourite fast 5-minutes long R game is chaining R packages. One person says the name of an R package and the next person needs to say the name of an R package that starts on a lett...
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News from archivist 2.0 on eRum2016 conference
Ten days ago eRum2016 conference (European R Users Meeting 2016) has finished. It was a huge event that attracted over 250 attenders, both from academia and business. Meeting was a great opportunity to listen to amazing keynotes like Heather Turner, Katarzyna Stapor, Rasmus Bååth, Jakub Glinka, Ulrike Grömping, Przemyslaw Biecek, Romain Franc...
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Determine optimal cutpoints for numerical variables in survival plots
The often demand in the biostatistical research is to group patients depending on explanatory variables that are continuous. In some cases the requirement is to test overall survival of the subjects that suffer on a mutation in specific gene and have high expression (over expression) in other given gene. To visualize differences in the Kaplan-Me...
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Entropy Based Image Binarization with imager and FSelectorRcpp
The image processing and the computer vision have gained a significant interest in last 2 decades. The image analysis can be used to detect items or people on images and videos. It is widely used in the medicine to detect cancer tissues and to improve brain, lungs and heart diseases diagnostic. The computer automation enabled analyzing terabytes...
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Controlling Expenses on Ali Express with RSelenium
Due to the incrising interest in the Internet and due to the its rising number of users, one can notice the surprising growth in the demand for analyzing data and information in the Internet that were left by users and for users. Many companies and institutions base their business decisions on the extensive research of social media portals and I...
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