lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Yonik Seeley <yo...@heliosearch.com>
Subject Re: Histogram facet?
Date Tue, 06 May 2014 17:09:49 GMT
On Mon, May 5, 2014 at 6:18 PM, Romain <romain.net@gmail.com> wrote:
> Hi,
>
> I am trying to plot a non date field by time in order to draw an histogram
> showing its evolution during the week.
>
> For example, if I have a tweet index:
>
> Tweet:
>   date
>   retweetCount
>
> 3 tweets indexed:
> Tweet | Date | Retweet
> A        01/01   100
> B        01/01   100
> C        01/02   100
>
> If I want to plot the number of tweets by day: easy with a date range facet:
> Day 1: 2
> Day 2: 1
>
> But now counting the number of retweet by day is not possible natively:
> Day 1: 200
> Day 2: 100

Check out "facet functions" in Heliosearch (an experimental fork of Solr):
http://heliosearch.org/solr-facet-functions/

All you would need to do is add:
facet.stat=sum(retweetCount)

-Yonik
http://heliosearch.org - solve Solr GC pauses with off-heap filters
and fieldcache

Mime
View raw message