Sapkowski, Dukaj and the wikipediatrend package

Sapkowski, Dukaj and the wikipediatrend package

Recently I tested a quite nice package for R: wikipediatrend (available on CRAN). With just a few lines of code, it can easily download and visualize daily wikipedia page views statistics. Great package, so we are going to take a closer look. I’ve just finished Season…

archivist 1.5

archivist 1.5

Archivist is an R package for object management (storing, sharing, searching). I am going to present it on useR conference next week (hope I can meet some of you in Aalborg). Below you will find two coolest (imho) features implemented in the version 1.5 of archivist.

Shiny, polls and interactive ggplot2

Shiny, polls and interactive ggplot2

Today we will use ggplot2 to recreate the diagrams presenting support in voting intention polls conducted before presidential elections. The story behind is interesting so let’s see it again. Yesterday RStudio has released a new version of shiny. Version 0.12 comes…

Data visualization vs. information management

Data visualization vs. information management

Yesterday I had a presentation ‘Data visualization vs. information management’. The core of the presentation were two examples which I present below. The punch line comes down to a simple statement: It is not enough to present data graphically; its presentation must…

Is there a limit to athletes' abilities in athletic running events?

Is there a limit to athletes’ abilities in athletic running events?

I’m forming a group of students and grads interested in data analysis: The MI^2 (square) Group. The name comes from the fact that we have students from MIM University of Warsaw and MINI Warsaw Technical University. We are playing with different projects and ideas…

Mice, post hoc tests and diffograms

Mice, post hoc tests and diffograms

I’ve recently worked on an interesting problem. There are two types of mice. We select three animals of each type. We want to examine an effect of given treatment on nerve cells, more specific: on their dendritic spines (small protrusions located at neurons). From…

The marathon of teams’ data analysis - wrap-up

The marathon of teams’ data analysis – wrap-up

The first team’s data analysis marathon took place on last Saturday. Almost 60 participants turned up to take part in it (representing various levels of proficiency in the art of data analysis and different regions of Poland –most were from Warsaw but there were…

The marathon of teams’ data analysis

In just four days’ time we are going to start a marathon of teams’ data analysis. This time it’s a local Warsaw event, but next time? It’s up to us! Let us sum up what we know about that event.

Colors of cars

Colors of cars

Last week we tried to find out what is the color of the cars with the highest engine power. It turned out that black and black metallic are most popular colors of the fastest cars. Yet engine power is not all. We still may explore the relation between color and brand.

What color car is the fastest?

What color car is the fastest?

RECOMB 2015, a conference devoted to computational molecular biology (with emphasis on computational), came to an end yesterday. Many interesting papers were presented, yet this post was inspired by a conversation that I had the pleasure to have during dinner break…