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Ryan McKinley commented on SOLR-680: ------------------------------------ good catch -- that would even work in distributed mode! However, median still requires a second pass. (unless you assume there are no null values) If we do a second pass, we could also calculate Q1 and Q3 (1st and 3rd quarter deviation) -- JFreeChart has a nice program to graph that :) > StatsComponent - get min, max, sum, qt, avg of number fields > ------------------------------------------------------------ > > Key: SOLR-680 > URL: https://issues.apache.org/jira/browse/SOLR-680 > Project: Solr > Issue Type: New Feature > Components: search > Reporter: Koji Sekiguchi > Priority: Minor > Fix For: 1.4 > > Attachments: SOLR-680.patch, SOLR-680.patch, SOLR-680.patch, > SOLR-680.patch > > > StatsComponent - it returns min,max,sum,qt,avg of specified number fields: > request parameters: > &stats=on&stats.field=price > {code:xml} > <stats> > <stats_fields> > <lst name="price"> > <double name="min">10</double> > <double name="max">30</double> > <double name="avg">20</double> > <double name="sum">60</double> > <double name="qt">3</double> > </lst> > </stats_fields> > </stats> > {code} > WRT "stats", the component can output sum and avg, but not sd and var. > USE CASE: > StatsComponent can be used to get "market price" of DocSet e.g. rental > housing site, package tour site. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.