On Tue, May 6, 2014 at 5:30 PM, Romain Rigaux <rom...@cloudera.com> wrote: > This looks nice! > > The only missing piece for more interactivity would be to be able to map > multiple field values into the same bucket. > > e.g. > > http://localhost:8983/solr/query? > q=*:* > &facet=true > &facet.field=*round(date, '15MINUTES')* > &facet.stat=sum(retweetCount) > > This is a bit similar to > SOLR-4772<https://issues.apache.org/jira/browse/SOLR-4772>for the > rounding. > > Then we could zoom out just by changing the size of the bucket, without any > index change, e.g.: > http://localhost:8983/solr/query? > q=*:* > &facet=true > &facet.field=*round(date, '1HOURS')* > &facet.stat=sum(retweetCount)
For this specific example, I think "map multiple field values into the same bucket" equates to a range facet? facet.range=mydatefield facet.range.start=... facet.range.end=... facet.range.gap=+1HOURS facet.stat=sum(retweetCount) And then if you need additional breakouts by time range, you can use subfacets: subfacet.mydatefield.field=mycategoryfield That will provide retweet counts broken out by "mycategoryfield" for every bucket produced by the range query. See http://heliosearch.org/solr-subfacets/ -Yonik http://heliosearch.org - facet functions, subfacets, off-heap filters&fieldcache
