Chris Brownlie

R/Shiny developer and data scientist #rstats

[Chris Brownlie @cbrownlie_r]

I’ve recently restarted my ‘This week in R’ series on LinkedIn, where each Friday I compile some of the most interesting blog posts and news stories. If you’re in the #rstats world, check it out and let me know what you think of the format! 😁 https://t.co/H1evlL3K9s

[Chris Brownlie @cbrownlie_r]

Its the first ‘This Week in R’ of 2025!

Getting started with {targets}; automating file management with {fs}; supercharging your #shiny software development and visualising the core R source code. All this and more below!

#rstats #news #blog #rshiny

https://t.co/mfSnKY7DMg

[Jumping Rivers | @[email protected] @jumping_uk]

📹 Our third #ShinyInProduction speaker was Chris Brownlie (@cbrownlie_r) ✨ Chris' talk, anatomy of a Shiny app, explored the building blocks of #RShiny, and how understanding them can be useful when debugging or monitoring a production app 🎉

https://t.co/e6ylLWSNqg

#RStats

[Jumping Rivers | @[email protected] @jumping_uk]

Our next speaker for #ShinyInProduction is Chris Brownlie (@cbrownlie_r) of @BW_LLP, who will be giving us a talk on the Anatomy of a Shiny app ✨

https://t.co/QEphzPBUZ4

#RStats

[Chris Brownlie @cbrownlie_r]

@AbderahmaneMaza @rstats4ds {cicerone} is good for this kind of thing https://t.co/uKXM1Q4CXb

[George Stagg @gwstagg]

For those R fans waiting patiently for a version of https://t.co/BU41Yx78QT for R, here is a little sneak preview of the progress we've made recently. This is a screen capture showing an editable R Shiny app, running without a Shiny server, via Shinylive and webR😀 #RStats #wasm

[Chris Brownlie @cbrownlie_r]

@rsangole @rstatstweet You want a concept called ‘mocking’. This blog post has a good explanation and lists various packages https://t.co/nr2CAAa5g6

[Chris Brownlie @cbrownlie_r]

@harshbutjust @rstatstweet https://t.co/iRa2ngkuVD

[Chris Brownlie @cbrownlie_r]

@pariharmadhur I'd probably do something like:
df |>
tidyr::pivot_wider(
names_from = class1,
values_from = class1,
values_fn = ~1,
values_fill = 0
) |>
tidyr::pivot_wider(
names_from = class2,
values_from = class2,
values_fn = ~1,
values_fill = 0
)

[Hadley Wickham @hadleywickham]

I know many folks are concerned about how verbose dplyr is for some simple problems. So please welcome minby to the tidyverse: https://t.co/0ckneFRn62 !

Now it's as easy as mtcars |> min_by(mpg, cyl), or save even more time and typing with
minby::min_mpg_by_cyl #rstats

[Chris Brownlie @cbrownlie_r]

@cpsievert @Angel_Feliz_F @rstatstweet Ah thats good to know thanks! Any more details or timelines? 😁

[Chris Brownlie @cbrownlie_r]

Question for #rstats people: are there any R packages for developing shiny apps that both:
- use bootstrap 5
- have a dashboard layout? Ala shinydashboard, bs4Dash et al?

[Chris Brownlie @cbrownlie_r]

No luck so far on an existing package, but it looks like chapters 16-21 of https://t.co/Ct9Lqfvlnp and the {charpente} package is probably the way to do it - shout out @divadnojnarg its an excellent book for anyone developing with shiny

[Chris Brownlie @cbrownlie_r]

Follow up question: if no, are there any good materials/resources that would help in developing such a package (e.g. a bs4Dash for bootstrap 5)? Thanks!

[Chris Brownlie @cbrownlie_r]

@Angel_Feliz_F @rstatstweet {bslib} is great for the Bootstrap 5 part but I can’t see an easy to way to replicate e.g. dashboardPage(), dashboardSidebar() etc. I can see it would be possible to use bslib to achieve the same thing but didn’t want to replicate if it already existed in a package somewhere!

[Chris Brownlie @cbrownlie_r]

@daattali I think if theres no difference in the output then I'd consider I() cleaner on account of having fewer characters and neither being particularly intuitively named. I'd imagine as.matrix() is probably slightly more efficient but I could be wrong and that might be irrelevant anyway

[David Álvarez @dalvarez37]

Muy interesante este artículo en @Medium: ¿Qué sabe Facebook sobre mi actividad fuera de Facebook? 👇

What does Facebook know about my off-Facebook activity? by @datascience_cb https://t.co/U5dQfOIK2U

[Chris Brownlie @cbrownlie_r]

I just published What does Facebook know about my location? https://t.co/D4a1gFQMFG

[Chris Brownlie @cbrownlie_r]

@TimBeard42 Thanks Tim! And congratulations on 23 years, you’re right that will be a massive dataset!