The Buffer call is formatted Buffer(g,d). g is a geometry value (e.g. point, linestring, and polygon). d is a distance. What unit of measurement is d using? Meters? Miles? Kilometers?

I have the following POLYGON (in the image you can see the area it covers) POLYGON((-74.05100448502202 4.7239278424321,-74.05092938316898 4.7241416902206,-74.04830618275201 4.7237460717602,-74.0...

I have created the following MySQL table to store latitude/longitude coordinates along with a name for each point: CREATE TABLE `points` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` v...