I’m facing the Choropleth challenge (link), but it requires knowledge that I don’t have.
I don’t want to slavishly copy the code written by others, I need to understand things.
But the various tutorials on D3 are complicated, or dispersive, or refer to antiquated versions of the library, which, in the succession of versions, does not support backwards compatibility, so each site says different and incompatible things, and you have always the feeling of wasting time.
The question I ask is: can you tell me an online resource from which I can learn the necessary knowledge to develop a choropletic map with two data sources (one for the design of the map and one for the levels of education)?
I don’t want to know any link, but the source you feel you can recommend for simplicity of exposure, compactness, completeness, organicity and update to the latest stable version of D3.
Or: when you drew your first choropleth map with D3, which source did you refer to?