> people, please don't use discrete color scales for continuous parameters
There are arguments against using continuous scales:
* By using classes (e. g. quantiles) you can reduce the impact of outliers. On a continuous scale an outlier can cause everything else to be perceived as one color.
* Perception of color intensity is not strictly linear.
There are arguments against using continuous scales:
* By using classes (e. g. quantiles) you can reduce the impact of outliers. On a continuous scale an outlier can cause everything else to be perceived as one color.
* Perception of color intensity is not strictly linear.
For some more details, check out this answer on StackExchange http://gis.stackexchange.com/a/86679/24164