Search Facets: Histogram Facets

[kimchy]

Support histogram facets for numeric data. The idea is that values are rounded into the closest bucket based on the interval provided (for example, for interval 100, then 1055 will be rounded to 1000) and then for each bucket the count, total, and mean values are provided.

Here is an example:

{
    query : {
        "match_all" : {}
    },
    facets : {
        "histo1" : {
            "histogram" : {
                "field" : "multi_num",
                "interval" : 100
            }
        }
    }
}

[kimchy]

Search Facets: Histogram Facets, closed by 47b3a81