Posts tagged: r

I’m working on a project where one of the outputs is a deck of Microsoft PowerPoint slides that act as a reference guide¹. Outside of contents, introductory and annex slides the bulk of the slides follow the same format with a simple table providing metadata about a suite of around 90 indicators. Using the gtcars dataset I’ll demonstrate how I’ve used Quarto and the {officer} package to automate some of the workflow.

Last summer I started the development of {tidyods}, an R package for reading cells in ODS (OpenDocument Spreadsheet) files, and effectively a {tidyxl} equivalent for ODS files. After developing the first iteration of the package in June I left it alone, but I’ve recently revisited the package and refactored the code which has improved performance.

Back in November after the various developments with Twitter, I worked out how to get my Twitter bot to run on Mastodon. Since the Twitter takeover there have been various announcements from the new owner and official Twitter accounts about free access to the Twitter API being suspended, although these have usually come and gone without said suspension happening.

Two years and one month ago to the day I blogged about setting up the narrowbotr, a Twitter bot that randomly posts locations on the inland waterways network in England & Wales managed by Canal & River Trust. What with everything going on with Twitter at the moment I’ve set myself up on Mastodon, where I’m @mattkerlogue@fosstodon.org, and so why not also migrate the narrowbotr. In this post: Setting up an account Chillin' out, maxin', rtootin' all cool Authenticating the bot Setting up an account There’s more than enough posts and whatnot out there about moving to Mastodon/the fediverse, Danielle Navarro’s blog is particularly good.

Energy costs in the UK, and globally, have been rising significantly as a result of Russia’s invasion of Ukraine. Energy prices for domestic (i.e. residential/household) consumers in the UK have been subject to a “cap”1 calculated by the energy regulator, Ofgem. The price cap is usually quoted in terms of it’s annual value, which possibly isn’t the most useful approach, especially as we head into the winter months. So I tried to estimate what my energy costs might be… and then I turned that exercise into an interactive calculator that others can use.

TLDR: For very good reasons ODS is a horrible data file format. The OpenDocument Spreadsheet (ODS) format is an increasingly common format for publishing spreadsheets, especially official statistics from UK government departments. I recently encountered a problem when trying to use the {readODS} package to read a published ODS file. More surprsingly, I discovered that {readODS} is the only R package on CRAN for working with ODS files. As a result I’ve started to develop my own package, {tidyods}.

No matter what job we do or who we work for all of us have been in meetings that we knew weren’t worth it. For those of us in the public sector there’s the added pressure knowing that we’re paid by the taxpayer. A couple of weeks ago a friend who works in another government department (for arguments sake the Department for Action) was lamenting that they and their team of six were asked by a someone in another government department (let’s say the Ministry of Meetings) to have a meeting with their team about a joint project they were working on.

One of my 2021 resolutions was to engage with Tidy Tuesday more often. I’ve dabbled in the past but never recorded my work or published it. This week’s data was a catalogue of the Tate collection, and there have been some rather fantastic visualisations1, no doubt inspired by the fact the subject matter is art. The other week I saw a tweet by Ijeamaka Anyene showcasing some fabulous artistic plots made in R by using the coord_polar() function within {ggplot2}.

Let’s just acknowledge upfront that this is a very strange week to be writing about Twitter posting strategies1. This is the second blog about my coastalwalkr project, you can read the first here. The last post introduced a conceptual evolutionary jump for the mapbotverse — walking — and we’ve seen how in R we might be able to programmatically take a walk along the coast of Great Britain. For humans the walk in and of itself can be the sole purpose of the activity, but a mapbot probably needs something more to keep itself occupied and entertained?

Back in October I developed a twitter bot based on Matt Dray’s londonmapbot. I’ve recently been thinking about other projects that might make good opportunities for learning, and thus blog posts. One idea was for a new addition to the mapbotverse1, which started as just tweeting a random location along the British coastline with maybe some of the same features as the narrowbotR but as I thought about it I wondered whether to make this a slightly more sophisticated bot.

The default prompt in the R console merely indicates it’s awaiting input. A single less than sign to signify R has nothing to do and wants you to give it a task. Back in October there was a mild buzz on #Rstats twitter about customising your R prompt after Romain Francois gave a talk at the R Addicts Paris Meetup. As documented in this RTask blog Romain’s prompt informs him of the active git branch and how much memory R is using.

gongoozler [n] a person who enjoys watching boats and activities on canals I’m sure I’m not the first person, and won’t be the last, to remark that 2020 is a very strange year. October 2020 marks five years since I last went on a canal boat holiday. An anniversary that at the outset of this year I had hoped I might have managed to avoid by taking to the water sometime over the summer.

Hello Humans, we cake in peace. We here at the Interplanetary Cake Union have noticed that you are missing out on the opportunity of celebrating your birthday more often by not knowing about your birthdays on other planets, and thus are potentially depriving yourself of more cake eating opportunities. Please use our birthday planets tool to review your age on other planets in the solar system, when your next birthday is and then use our Interplanetary Birthday Express service to order yourself a galactic collection of cake1.

My last post explored using the {tidymodels} package with data about the Eurovision Song Contest1. One of the best things to do when exploring a dataset is to visualise it, so let’s also use this dataset to learn about the {gganimate} package that provides ways to create animated charts. We’ll reuse the eurovision_scores dataset produced from the code in my last post. First let’s take a look at UK performance over time, we also need to filter out data from 1991 where Sweden and France both gained 146 points (but due to the complex rules in place at the time Sweden won, however under the current rules France would have won).

Last Saturday, Saturday 16th May 2020 was scheduled to be the 65th Eurovision Song Contest, but due to the ongoing COVID19 pandemic the contest was cancelled. Eurovision is very special to me, and I’ve been lucky to attend a couple of the finals and semi-finals – and, if you were watching the second semi-final of the 2015 contest you may have even seen me on TV! I’ve recently watched some of Julia Silge’s TidyTuesday webcasts using the {tidymodels} framework, and so instead of watching the EBU’s tribute show and getting rather sad about the contest not happening and Daði Freyr not winning and giving me an even better excuse to go back to Iceland1 I decided to play with {tidymodels} and the Datagraver’s Eurovision points dataset on Kaggle.

Last week I was taking some colleagues through the code for my COVID19 PDF scraping and afterwards one sent me a message asking about a chunk of code that used the dplyr::case_when() function. In particular they wanted to know why case_when() uses the tilde (~)1, which led to a bit more of a generalised conversation about case_when() and how it works. In your script, when you assign the values to the entity and position columns inside your case_when() call why do you use ~ rather than = or <-?

In my last post I wrote about the process for scraping data from Google’s COVID-19 Community Mobility Reports. That post dealt with processing just one report, the one for the UK, but Google have published reports for around 130 countries and one for each of the 50 US states. So we could run the script 180 separate times to extract all the data, but we can easily extend our scripting to automate this process.

Last week Google published their COVID-19 Community Mobility Reports. These make use of Google’s very extensive location history data, which they mainly use for telling you about traffic levels on roads, popular times for places in Google Maps and whether a bar or restaurant is busier than usual. In these mobility reports they’ve looked at the location history data for a large number of countries, and localities within countries to help public health officials review the effectiveness of social distancing measures.