Natural Breaks legend

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Right now, natural breaks are using a diverging color scheme, suggesting 
positive and negative divergence from a central point. People in the workshop 
found this confusing. Let's use one of the sequential legends from Color Brewer 
instead. 

Original issue reported on code.google.com by jkoschin...@gmail.com on 7 Aug 2012 at 7:18

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Perhaps the color scheme used in the Histogram would be even better for both 
Natural Breaks and Unique Values?

Original comment by mmcc...@gmail.com on 7 Aug 2012 at 7:22

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Original comment by jkoschin...@gmail.com on 7 Aug 2012 at 7:34

• Added labels: Milestone-Release1.2

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Since unique values are often without order (e.g. for nominal data like 
regions), the qualitative color scheme makes sense. But since natural breaks 
are applied to ordered data, a sequential color scheme seems to make more sense 
here but we can discuss next week.

Original comment by jkoschin...@gmail.com on 7 Aug 2012 at 8:06

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Fixed in 1.1.0 beta 42:

- Unique Values now use qualitative color scheme as per Color Brewer.  This is 
the same color scheme used by Histogram currently
- Natural breaks now uses the sequential color scheme.
- Note: when Unique Values is chosen for a variable with more than 10 unique 
values, the algorithm for 10 Natural Breaks is automatically used, but the 
color scheme will remain qualitative rather than sequential since it is still a 
Unique Values map.

Original comment by mmcc...@gmail.com on 10 Aug 2012 at 10:10

• Changed state: Fixed