What a great bunch of GeoSkirmishers you are! Here is another question. I have a line AB where A is (0,0) and B is (10,0). I also have a point P that is (5,3). I know that the section of the circle that passes through A,P, and B can be determined if I know the circle center - point C, which can be defined as the intersection of perpendicular lines projected from the midpoints of AP and BP.
What is the most economical way of expressing this using PostGIS/PostgreSQL fuctions? Alternatively, if there is a better approach, what is that? Thanks! -Eric Eric Randall County of Erie, Pa. _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users