eRum Competition Winners

• The Main Competition
• The Secondary Competition
• What next?

The Main Competition

The winner of the main competition is Lukasz Janiszewski. Lukasz provided a fantastic visualisation of the locations of each R user/ladies group and all R conferences. You can see his app here. If you want to view his code, you are able to do so in this GitHub repo. The code is contained in the directory erum_jr and the data preparation can be seen in budap.R.

Lukasz made 3 csv files contained the information about the R user, R ladies and R conferences. Using the help of an Rbloggers post, he was able to add the geospatial information to those csv files. Finally, he scraped each meetup page for information on the R-ladies groups. Using all of this information, he was able to make an informative, visually appealing dashboard with shiny.

Lukasz will now be jetting off to Budapest, to eRum 2018!

The Secondary Competition

The winner of the secondary competition is Jenny Snape. Jenny provided an excellent script to parse the current .Rmd files and extract the conference and group urls & locations. The script can be found in this GitHub gist. Jenny has written a few words to summarise her script…

“The files on github can be read into R as character vectors (where each line is a element of the vector) using the R readLines() function.

From this character vector, we need to extract the country, the group name and url. This can be done by recognising that each line containing a country starts with a ‘##’ and each line containing the group name and url starts with a ’*‘. Therefore we can use these ’tags’ to cycle through each element of the character vector and pull out vectors containing the countries, the cities and the urls of the R groups. These vectors can then be cleaned and joined together into a data frame.

I wrote these steps into a function that accepted each R group character vector as an input and returned the final data frame. As one of the data sets contained just R Ladies groups, I fed this in as an argument and returned it as a column in the final data frame in order to differentiate between the different group types. I also returned a variable based on the character vector input in order to differentiate between the different world continents.

Running this function on each of the character vectors creates separate data sets which can then be all joined together. This creates a final dataset containing all the information on each R group: the type of group, the url, the city and the region."

As well as this, Jenny provided us with a fantastic shiny dashboard, summarising the data.

Jenny has now received a free copy of Efficient R Prgoramming!

Once again, thank you to all who entered and well done to our winners, Lukasz and Jenny!

What next?

We’re in the process of converting Jenny’s & Lukasz’s hard work into a nice dashboard that will be magically updated via our list of useR groups and conferences. It should be ready in a few days.