Hacker News Reader

I just have to say "Dank u" for choosing a colour scheme that is friendly to those with Colour Vision Deficiency of the red/green variety. A huge number of maps which use gradations of colour to represent data are useless to up to 1 in 10 men because they adopt the rainbow colour scheme with red and green representing opposite ends of the spectrum.

View on HN

Cartographers have it easy thanks to the wonderful sets on http://colorbrewer2.org/js/ . The scheme looks inspired by them.

I wonder why this map was done with a divergent scheme though. The data has no midpoint, it makes no sense to diverge like that. And when you zoom out it, due to the diverging lightness ramp it highlights the lightest colors which are 1945 to 1975.

It looks gorgeous but the color choice is not perfect for exploring the data.

You're right to point that out. I agree that a divergent scheme is not the best fit for the data. A simple gradient would have worked best, though it would have been less colourful.

I would use differently colored sequential schemes per building type, that might look good. Time to grab the data and play around. :)

Reply on news.ycombinator.com