Jack Davison

cc @teunbrand.bsky.social - apologies for the tag but I know you're the font of all knowledge for ggplot2! I'm not convinced what we're after is possible given how coord_radial reprojects polygons

`geom_rect()` in `coord_radial()` appearing as perfect rectangles Hello, I'm working on translating an old package from lattice to ggplot2. One function produces plots like this: Under-the-hood there's a lot of complex trigonometry going on as this plot is act...

forum.posit.co/t/geom-rect-... - any clever #ggplot2 #rstats users want to offer some assistance with this tricky problem? I say 'tricky' - it's probably either really easy if you know how or totally impossible. Help appreciated!

Looks great - though the dark green on light grey used for the roxygen2-style comments is really hard to read, which is a shame as that stuff is really vital to plumber2!

#rstats #quarto - has anyone written anything on how Quarto meets (or fails to meet) modern web accessibility standards? Had a query from our digital team. I imagine some of it would be up to the user - e.g., add alt text - so my second question is there a guide "writing an accessible quarto doc?"

Recommended way to split data by a variable, apply a function, and return a bound dataframe (i.e., a non-experimental `do()` replacement) · Issue #7666 · tidyverse/dplyr Hi folks, My question hinges on this sort of situation. Obviously this example is pretty artificial, but its a situation in which you have a function which acts on a dataframe, returns a dataframe,...

#rstats #dplyr wizards - I come cap in hand in a time of need - github.com/tidyverse/dp... - something that seems like it should be quite simple but I can't work out how to achieve!

Parallelisation built-in to #rstats #purrr 📦 is a total gamechanger. I've had a play this morning and it seems to "just work" effortlessly. When this lands on CRAN we'll be able to simplify so many of our packages/workflows!

Aha! Seemed to be an issue using "cairo" graphics devices - switching to {ragg} has sorted it

test: don't print plots · davidcarslaw/openairmaps@a60ac5c mapping functions to support openair. Contribute to davidcarslaw/openairmaps development by creating an account on GitHub.

Clever #rstats #testthat people - I'm trying to write unit tests to run on GitHub Actions but seemingly any that create a plot (e.g., ggplot2) fail on MacOS, and only MacOS. Can anyone who knows more about this than me advise what could be going on? (github.com/davidcarslaw...)

Thanks Allison! 😀

Honestly, I'd never used JS / Observable before, so I just worked through the docs at observablehq.com/framework/ til I got something that looked half decent, with a lot of googling! @allisonhorst.bsky.social also has a nice getting started video series: www.youtube.com/watch?v=N2qi...

This was a wonderful thread to realise GIFs don't work on Bluesky 🤦 the thread looks a bit more impressive when the images move around!

I'm enjoying #observableframework for lots of reasons - I can still use #rstats to do the data loading, and create dashboards that would normally need a #shiny server but are instead totally serverless! It is also lightning quick to react to user inputs ⚡

Finally (for now!) number three is 2024/46 (iso codes). This was a quick one - just uses #ObservablePlot tree mark to create a flowchart of the three-letter iso codes. I think I'm now one week behind, so will hopefully turn my attention to 2024/47 (Bob's Burgers!) next!

Number two is 2024/45 (democracy & dictatorship) - change the slider to see countries adopt (or abandon) democracy. This required using #leaflet in JavaScript, which I'd never done before (although I have experience with the #rstats wrapper). Also a lot of nested data/JSONs to create & filter.

The first dashboard was 2024/44 (monster movies). Using #ObservablePlot and #arquero JS to filter data on the fly and compare data for different genres of monster movie. I've played around with both in #quarto before, so this was familiar territory.

I've been trying to learn @observablehq.com #framework through #tidytuesday. I've lagged behind a few weeks, and never posted about it on Bluesky, so here's what I've done so far! The dashboards are found at jack-davison.github.io/TidyTuesdayO..., code at github.com/jack-davison... 🧵

A polar plot map, coloured by Pearson's r of two pollutants rather than the concentration of a single pollutant.

Just released v 0.9.1 of our #rstats 📦 {openairmaps}, which combines #openair with #leaflet for dynamic #airquality mapping. Lots of fixes, but main feature is allowing for "pairwise" stats in `polarMap()`. Read more about pairwise bivariate polar surfaces: bookdown.org/david_carsla...

Open to contributions if anyone's keen. I'd like to implement nicer shadows or some way to make the markers pop off the tilemaps better, but can't quite crack something that looks good.

I wrote something #rstats a few months ago and never really plugged it. I love #leaflet, but awesomeMarkers is v limited - instead `leaf.magic::magicIcons` uses {magick} to construct icons on the fly. Totally customisable sizes/icons/colours/shapes. See more at: github.com/jack-davison...

jack-davison - Overview Environmental data analyst. R Developer. Certified Posit Tidyverse Instructor. - jack-davison

An #introduction 👋

I'm an environmental data analyst and R package developer, with a specialism in #airquality. Interested in #rstats, #quartopub, #shiny and, increasingly, #observable and #observableframework.

You can see a lot of my stuff on GitHub: github.com/jack-davison