[R-sig-Geo] spatialpoints: each dot represents 100 individuals?

[Kent Johnson]

>
> From: Juta Kawalerowicz <juta.kawalerowicz at nuffield.ox.ac.uk>
> To: Edzer Pebesma <edzer.pebesma at uni-muenster.de>
> Hi and thanks for all suggestions - not I have like 9 million
> individuals (Swedish population registry data, it's magical) and
> wanted to have a look at patterns of residential segregation. A while
> back there was this cool map by
> http://www.nytimes.com/interactive/2015/07/08/us/census-race-map.html
> where each dot represented say 100 people (this actually depends on
> how much you zoom in) and I was wondering about what would be the
> conventional way of doing this thing.
>
> Juta
>

I think the conventional way to do this is to randomly distribute the dots
across small regions, e.g. in the US to draw dots in each census block. An
example with a detailed description of the method is here:
http://www.coopercenter.org/demographics/Racial-Dot-Map

Kent

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