issues: 847700726
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| 847700726 | MDU6SXNzdWU4NDc3MDA3MjY= | 1285 | Feature Request or Plugin Request: Numeric Range Facets | 192568 | open | 0 | 0 | 2021-04-01T01:50:20Z | 2021-04-01T02:28:19Z | CONTRIBUTOR | It would be great to offer facets for numeric data ranges. The ranges could pull from typical GIS methods of creating choropleth maps. https://gisgeography.com/choropleth-maps-data-classification/ Of the following, for mapping, I've always preferred a Jenks Natural Breaks, or a cross between Jenks and Pretty breaks. - Equal Intervals - Quantile (equal count) - Standard Deviation - Natural Breaks (Jenks) Classification - Pretty Breaks - Some sort of Aggregate Jenks Classification (this isn't standard, but it would be nice to be able to set classification ranges that work across tables.) Here are some links for Natural Breaks, in case this method is unfamiliar. - https://en.wikipedia.org/wiki/Jenks_natural_breaks_optimization - http://wiki.gis.com/wiki/index.php/Jenks_Natural_Breaks_Classification - https://medium.com/analytics-vidhya/jenks-natural-breaks-best-range-finder-algorithm-8d1907192051 Per that last link, there is a Jenks Python module... They also describe it as data-intensive for larger datasets. Maybe this is a good plugin idea. An example of equal Intervals would be 0 – < 10 10 – < 20 20 – < 30 30 – < 40 It's kind of confusing to have that less-than sign in there. it could also be displayed as: 0 – 10 10 – 20 20 – 30 30 – 40 But then it's not completely clear which category 10 is in, for instance. (Best to right-justify.. and use an "en dash" between numbers.) | 107914493 | issue | {"url": "https://api.github.com/repos/simonw/datasette/issues/1285/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} |