Re: Hot to envelope() n points stored in a table?

[John Powell]

The envelope function gives you the minimum bounding rectangle of a geometry, see http://dev.mysql.com/doc/refman/5.0/en/geometry-property-functions.html
So, the envelope of a point would be the point itself, which would seem a bit useless.

You could run a query that would get you the max and min of all the points, ie, select max(X(geom)), max(Y(geom)) from table and create the mbr from that.