Rafael H. M. Pereira 🚡 Urban Demographics
LightNews LightNews
banner
urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics
@urbandemog.bsky.social
7K followers 880 following 170 posts

Researcher Ipea Brazil | Visiting prof @geo_uoft | PhD @TSUOxford | Structured procrastination on Cities, Urban mobility, Accessibility, Equity, Data science, R. About: www.urbandemographics.org/

Videos
Engineering 29%
Economics 25%
Posts Replies Media Videos
Pinned
urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · May 19
New preprint where we propose "Rethinking Congestion as Lost Access"
📑 osf.io/fjdbs_v2 Short 🧵!

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 20h
@filipecampante.bsky.social has two very interesting papers related to this:
- www.aeaweb.org/articles?id=...
- www.aeaweb.org/articles?id=...
Capital Cities, Conflict, and Misgovernance
(July 2019) - We investigate the links between capital cities, conflict, and the quality of governance, starting from the assumption that incumbent elites are constrained by the threat of insurrection...
www.aeaweb.org

Reposted by Rafael H. M. Pereira

ecioxford.bsky.social
Environmental Change Institute, University of Oxford @ecioxford.bsky.social · 4d
New Nature Energy @nature.com study shows the UK can reach net zero faster, cheaper & with fewer risks by cutting energy demand.

ECI’s Prof Christian Brand @profchristianbrand.bsky.social led the transport analysis in this unique gov–research collaboration.

➡️: www.eci.ox.ac.uk/news/less-en...

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 4d
I would add WebGL-based visualization libraries (e.g. #deckgl and #mapgl). They are not exactly super new but they're really centraly in how spatial data science has changed over the past 10-ish years.

ps. #GeoParquet, and #DuckDB + spatial ! would also be at the top of my list!
jakubnowosad.com Jakub Nowosad @jakubnowosad.com · 4d
What are the most exciting trends you’re seeing in spatial data science lately?
Some of mine:

- New file formats (e.g. #GeoParquet)
- Geospatial DBs (e.g. #DuckDB + spatial)
- Global discrete grids

What would you add?

#Geospatial #GISchat #RSpatial #GeoPython
A discrete global grid (DGG) is a mosaic that covers the entire Earth’s surface. Mathematically it is a space partitioning.

Reposted by Rafael H. M. Pereira

jakubnowosad.com
Jakub Nowosad @jakubnowosad.com · 4d
What are the most exciting trends you’re seeing in spatial data science lately?
Some of mine:

- New file formats (e.g. #GeoParquet)
- Geospatial DBs (e.g. #DuckDB + spatial)
- Global discrete grids

What would you add?

#Geospatial #GISchat #RSpatial #GeoPython
A discrete global grid (DGG) is a mosaic that covers the entire Earth’s surface. Mathematically it is a space partitioning.

Reposted by Rachel S. Franklin

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 6d
Glad to share this paper is now published "A family of accessibility measures derived from spatial interaction principles" journals.plos.org/plosone/arti...
A delightful colab led by @soukhova.bsky.social !

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 7d
Em minha defesa, recomendei pq era onde os taxistas abasteciam. Eu nunca lavei nada lah kkkkk

Reposted by Rafael H. M. Pereira

emitanaka.org
Emi Tanaka @emitanaka.org · 8d
Congratulations to my student, Maggie Ma, for publishing her first #rstats package {ggincerta} on CRAN 🥳

Spatial uncertainty visualisation (bivariate, pixel, exceedance, glyph), like {Vizumap}, but fully integrated with ggplot2 -- a much simpler API with all the advantages of the ggplot2 system.
exceedance plot ggplot(nc) + geom_sf(aes(fill = duo_exceed(value, sd))) bivariate plot ggplot(nc) + geom_sf(aes(fill = duo(value, sd))) glyph plot ggplot(nc) + geom_sf_glyph(mapping = aes(v1 = value, v2 = sd)) pixel plot ggplot(nc) + geom_sf_pixel(mapping = aes(v1 = value, v2 = sd))

Reposted by Rafael H. M. Pereira

giswqs.bsky.social
Qiusheng Wu @giswqs.bsky.social · 8d
I’m thrilled to share that my new book (Spatial Data Management with DuckDB) is now published! 🎉

At 430 pages, this book provides a practical, hands-on guide to scalable geospatial analytics and visualization using DuckDB. All code examples are open-source and freely available on GitHub.

Reposted by Lisa W. Fazio, Robert W. Wallace, Rafael H. M. Pereira , and 3 more

mtsw.bsky.social
mtsw @mtsw.bsky.social · 8d
A lot of education discourse is at root an inability to decide whether the purpose of our education system is to 1) teach material and measure learning 2) reward students who work hard 3) separate the smart kids (destined for smart guy jobs) from the dumb kids (destined to serve the smart guys)

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 10d
Oficina de acessibilidade espacial com #r5rstats no R hoje na #anpet2025
Material do curso aqui ipeagit.github.io/oficina_aces...

Reposted by Rafael H. M. Pereira

tasoskitsos.bsky.social
Tasos Kitsos @tasoskitsos.bsky.social · 12d
🚨📣 We have a new paper with Emmanouil Tranos & @levijohnwolf.bsky.social in the Journal of #Economic #Geography linking #internet speeds to #firm level #productivity benefits. There is a 2% productivity boost pulling slowest to fastest speeds across #UK LAs 👀👇

#geosky
#econsky 📈📉

shorturl.at/NJ4rE
Fast and furious: the productivity effects of the geography of experienced internet speeds
Abstract. The link between digital technologies and productivity has long intrigued researchers. Key to unpacking this relationship is detailed data connec
shorturl.at

Reposted by Rafael H. M. Pereira

Reposted by Rafael H. M. Pereira

transportist.net
David M Levinson ⁂ @transportist.net · 17d
UK looking to implement VKT charge for EVs. Road pricing one EV at a time is coming, as long foretold.
stephenkb.bsky.social Stephen Bush @stephenkb.bsky.social · 18d
I don’t think think “estimated road use” is right approach - at the least drivers should have the *option* of getting a black box fitted that just tracks their EVs usage, but come on, Mel, impersonate a serious politician!
Reeves poised to unveil Budget plan for EV drivers to pay per mile charges
Chancellor looks to offset a forecast sharp drop in government revenue from fuel duty
www.ft.com

Reposted by Rafael H. M. Pereira, Martin Tomko

infobeautiful.bsky.social
Information is Beautiful @infobeautiful.bsky.social · 18d
Now this is how you detect whether an election was stolen. Humans choose rounder numbers.

by @TheEconomist
A scatter plot titled "Fair and square? Russian federal elections, 2000-21" which visualizes the results of Russian federal elections. The x-axis represents voter turnout in percentage, ranging from 0 to 100%. The y-axis represents the percentage of votes for Putin, Medvedev, or the United Russia party, also ranging from 0 to 100%. Each dot on the plot represents a polling station. A cluster of dots appears in the upper right corner, indicating high voter turnout and a high percentage of votes for the specified candidates. A dashed rectangle highlights a grid-like pattern of dots at numbers ending in zero and five, with an annotation suggesting this pattern indicates potential foul play. The source is cited as Kobak and Shpilkin (2021).

urbandemog.bsky.social
Rafael H. M. Pereira 🚡 Urban Demographics @urbandemog.bsky.social · 18d
Esse tipo de convite tem sido cada vez mais comum. Se tivesse tempo até faria, não é por má vontade. Eu aceitei esse tipo de convite uma única vez, mas era uma semana q estava mais tranq e uma revista/artigo tipo cometa Halley na nossa área