Add opacity variability to help overcome issues with thematic maps

[Robinlovelace]

As pointed out by @rsbivand this is an issue: too much focus given to large areas. Nice solution is setting opacity propoportional to pop. density, as shown here: https://twitter.com/PhilPierdo/status/865953679840612353

Another solution is to apply a mask hiding everything but buildings as implemented by @oobr.

[Robinlovelace]

By @oobrien that should be - do you have a good citation for your method Oliver? Thanks for creating it!

[oobrien]

HI @Robinlovelace Yes, we detailed the technique in:

O’Brien, O., Cheshire, J. Interactive mapping for large, open demographic data sets using familiar geographical features. Journal of Maps. doi:10.1080/17445647.2015.1060183

[Robinlovelace]

Awesome - cheers for the link.

[Robinlovelace]

Closing and adding to the list of ideas.