<div dir="ltr"><div>De rien lointain cousin du Québec ;-)<br></div>Rémi-C<br></div><div class="gmail_extra"><br><div class="gmail_quote">2015-03-12 19:43 GMT+01:00 <span dir="ltr"><<a href="mailto:Steve.Toutant@inspq.qc.ca" target="_blank">Steve.Toutant@inspq.qc.ca</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font face="sans-serif">Wow merci Remi. That saves me a lot of
coding...</font>
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<p><font size="1" face="sans-serif">2015-03-12 12:42</font>
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<br><font size="3">Hey,</font>
<br><font size="3">what you want is extremely easy to get.</font>
<br><font size="3">First add the median function to your database from </font><a href="https://wiki.postgresql.org/wiki/Aggregate_Median" target="_blank"><font color="blue" size="3"><u>here</u></font></a>
<br><font size="3">(Now you have access to median(numeric) )<br>
</font>
<br><font size="3">Then,</font>
<br><font size="3">for a table my_table containing points in the geom column<br>
</font>
<br><font size="3">--not tested </font>
<br><font size="3">SELECT ST_MakePoint(median(ST_X(geom)), median(ST_Y(geom)))
as my_median_point</font>
<br><font size="3">FROM my_table<br>
</font>
<br><font size="3">Cheers,</font>
<br><font size="3">Rémi-C</font>
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<br><font size="3">2015-03-12 14:56 GMT+01:00 <</font><a href="mailto:Steve.Toutant@inspq.qc.ca" target="_blank"><font color="blue" size="3"><u>Steve.Toutant@inspq.qc.ca</u></font></a><font size="3">>:</font>
<br><font size="3" face="sans-serif">Hi,</font><font size="3"> </font><font size="3" face="sans-serif"><br>
I used st_centroid on a multipoint table to get the mean center.</font><font size="3">
</font><font size="3" face="sans-serif"><br>
I would like to compare the result on the median center</font><font size="3">
</font><font color="blue" size="3"><u><br>
</u></font><a href="http://en.wikipedia.org/wiki/Center_of_population#Mean_center" target="_blank"><font color="blue" size="3" face="sans-serif"><u>http://en.wikipedia.org/wiki/Center_of_population#Mean_center</u></font></a><font size="3">
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</font><font size="3" face="sans-serif"><br>
Is there already an operator in postgis that does that?</font><font size="3">
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</font><font size="3" face="sans-serif"><br>
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</font><font size="3">
</font><font size="3" face="sans-serif"><br>
Thanks in advace for your help!</font><font size="3"> </font>
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