Hey, what you want is extremely easy to get. First add the median function to your database from here <https://wiki.postgresql.org/wiki/Aggregate_Median> (Now you have access to median(numeric) )
Then, for a table my_table containing points in the geom column --not tested SELECT ST_MakePoint(median(ST_X(geom)), median(ST_Y(geom))) as my_median_point FROM my_table Cheers, Rémi-C 2015-03-12 14:56 GMT+01:00 <steve.tout...@inspq.qc.ca>: > Hi, > I used st_centroid on a multipoint table to get the mean center. > I would like to compare the result on the median center > http://en.wikipedia.org/wiki/Center_of_population#Mean_center > > Is there already an operator in postgis that does that? > > Otherwise I would like to write one, but I don't have much experience > doing that, so any tips on how to do that well would be appreciated > Thanks in advace for your help! > > > _______________________________________________ > postgis-users mailing list > postgis-users@lists.osgeo.org > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >
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