bertin.js is an easy to use wrapper around d3js to facilitate the process of making thematic maps.

Nicolas Lambert

Hello Bertin.js

Bertin.js: match and merge

Bertin.js: prop symbols

Bertin.js: texts

Bertin.js: typo

Bertin.js: choropleth

Bertin.js: mushroom

Inputs.table + bertin.js

Bertin.js: quickdraw & table2geo

Bertin.js: dorling cartogram

Bertin.js: projections

Bertin.js: symbols

Bertin.js: spikes

Bertin.js: stock + choro

Bertin.js: stock + typo

Bertin.js: dot cartogram

Bertin.js: links

Bertin.js: thickness

Bertin.js: mercator tiles

bertin.js: Tooltips

Bertin.js: regular bubble (Points Bertin)

bertin.js: official logo 😎

Bertin.js: dot density map

Bertin.js: deal with with geojson properties

Bertin.js: Layer types in brief

Bertin.js: location map (minimap)

Bertin.js: prop squares

Waterlines

Bertin.js: regular squares

Bertin.js: Regular grid

Several Ways to Represent Dead and Missing Migrants in the Mediterranean with bertin

Smooth

Combine bertin with plot and d3js

Cheat sheet bertin

Let's play with viewof

Ridge

SVG paths & patterns

Display and hide layers with Bertin

Update layers with bertin

bertin globe view

Bertin.js

can you normalize by the area as you would generally do for a choropleth?

You just have the choice between 2 operators : mean or sum. See grid.js on my github repo. See also my notebook regulargrid. Suggestions are welcome.

Sorry, I guess I was looking for the "sum" operator, but I didn't understand that it would normalize by area. When you show population, it seems much better with the "sum" op.

Complicated. Because as it looks like 3d, what should be considered? The volume or the height? I don't have a definitive answer on that...

For me the rule of thumb for choropleths is the following: if you split a region into separate entities, the map should not change (at least not drastically). In this case (population or gdp), with the "mean" operator Europe —being split between 25 countries— disappears completely, although its total population is 5x Russia's. If I understand how this map is computed, I would say that if I use it to display a rate (e.g. mortality, or gdp per capita), then "mean" is fine, but if I want to display an absolute quantity such as population or gdp, then I should use "sum". Is this correct?

Yes. I think that what I propose is more clear in this notebook. https://observablehq.com/@neocartocnrs/bertin-js-regular-grid

world.json