Yellow post box – CC-BY-SA by Elliott Brown Day 30 of 30DayMapChallenge: « The final map » (previously). Creating a raw polygon layer of french postal codes from points This data, although not a “real” administrative lim...

Monitoring the Single-Celled Powerhouses of the Sea – CC-BY-NC by NASA’s Marshall Space Flight Center Day 26 of 30DayMapChallenge: « Map projections » (previously). After seeing this post by Cédric Vidonne I had to try to...

Tractor fertilizes field pesticide and insecticide – CC-BY by Aqua Mechanical Day 24 of 30DayMapChallenge: « Only circular shapes » (previously). We’ll map the pesticides bought in France as a Dorling cartogram (Dorling 1...

Holi 2016-01 – CC-BY-NC-ND by Rajesh Pamnani Day 22 of 30DayMapChallenge: « 2 colours » (previously). Just a joke… Config library(dplyr) library(rnaturalearth) library(ggplot2) library(glue) Data Data from Natur...

Ciclista atropellado – CC-BY by Nicanor Arenas Bermejo Day 20 & 21 of 30DayMapChallenge: « OpenStreetMap » and « Conflict » (previously). Mapping the accidents between bicycles and cars in 2023 in France. We have had a few sad accidents recently showing a growing attention on cyclist security and the conflicts on the road. We’ll use the Annual ...

Meltwater in crevasses in Greenland – CC-BY-NC by NASA’s Marshall Space Flight Center Day 11 of 30DayMapChallenge: « Arctic » (previously). We’ll use the Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids (J. Bamber 2001) from J. L. Bamber, Layberry, and Gogineni (2001) and Layberry and Bamber (2001). Download here (after registration). Data The ...

Valley of the roses – CC-BY-NC-ND by Riccardo Maria Mantero Day 6 of 30DayMapChallenge: « Raster » (previously). What was the temperature at your birth place when you were born? Copernicus provides many climate datasets. ...

Blue Whale – CC-BY-NC-ND by Tom Benson Day 5 of 30DayMapChallenge: « A Journey » (previously). Thirteen Blue whales (Balaenoptera musculus) were satellite tagged in 2015 in Australia (Mӧller et al. 2020). We’ll follow their summer in the Great Southern Australian Coastal Upwelling System (GSACUS). Data is available from the Australian Antarctic Data Centre (...

Hexagonos – CC-BY-SA by Fernando Reyes Palencia Day 4 of 30DayMapChallenge: « Hexagons » (previously). Hexagonal grid? We will do statistical binning on a hexagonal grid, but not just any grid. Geodesic Discrete Global Grid S...

Death Valley Winter – CC-BY by street.light Day 3 of 30DayMapChallenge: « Polygons » (previously). A classic world choropleth map. We’ll use the Comparative Death Penalty Database (Anckar and Denk 2024) available on https://da...

Lyon – CC-BY-NC-ND by Emmanuel Fromm Day 2 of 30DayMapChallenge: « Lines » (previously). We’ll make a map of the street name gender in Lyon. We need a database of french first names where we’ll find the gender. We will extract...

Aiguille du Midi – CC-BY-SA by Ivan Borisov Day 1 of 30DayMapChallenge: « Points » (previously). IGN is scanning France using LIDAR. More than half the country is available for downloading currently. Let’s play with points aro...

French and European flags – CC-BY-NC-ND by Ibrahim Ajaja / World Bank Election maps are hard: Land doesn’t vote, people do !. So most maps made on these occasions (generally choropleths) are possibly misleading. Figure 1: Car...

2017 Solar Eclipse with Totality - Composite – CC-BY-NC by Jeff Geerling I saw this post showing a map of the year of the most recent total eclipse, and people mentioning that we can find the data on the Five Millennium Canon of Solar Eclipses Database (the data also mentioned in the ...

2017 Solar Eclipse with Totality - Composite – CC-BY-NC by Jeff Geerling I saw this post showing a map of the year of the most recent total eclipse, and people mentioning that we can find the data on the Five Millennium Canon of Solar Eclipses Database (the data also mentioned in the ...

Race amalgamation in Georgia – W.E.B Du Bois Recreating the the data visualization of W.E.B Du Bois from the 1900 Paris Exposition using modern tools. See the challenge presentation. Setup library(tidyverse) library(glue) library(ggtex...

Race amalgamation in Georgia – W.E.B Du Bois Recreating the the data visualization of W.E.B Du Bois from the 1900 Paris Exposition using modern tools. See the challenge presentation. Setup library(tidyverse) library(glue) library(ggte...

Routes of the african slave trade – W.E.B Du Bois Recreating the the data visualization of W.E.B Du Bois from the 1900 Paris Exposition using modern tools. See the challenge presentation. This week, the data provided1 don’t match the visualization. So we are free to be more ...

Routes of the african slave trade – W.E.B Du Bois Recreating the the data visualization of W.E.B Du Bois from the 1900 Paris Exposition using modern tools. See the challenge presentation. This week, the data provided1 don’t match the visualization. So we are free to be more ...

Acres of land owned by negroes in Georgia – W.E.B Du Bois Recreating the the data visualization of W.E.B Du Bois from the 1900 Paris Exposition using modern tools. See the challenge presentation. Setup library(tidyverse) library(janit...