¡@
php Programming Glossary: tanHow do I check if a longitude/latitude point is within a range of coordinates? http://stackoverflow.com/questions/11510326/how-do-i-check-if-a-longitude-latitude-point-is-within-a-range-of-coordinates Coordinate c Vector ret new Vector given tan lat y x tan long z x the Vector has magnitude 1 so sqrt x^2.. Coordinate c Vector ret new Vector given tan lat y x tan long z x the Vector has magnitude 1 so sqrt x^2 y^2 z^2 1 rearrange.. some symbols solving for x first... ret.x 1.0 math.sqrt tan c.lattitude ^2 tan c.longitude ^2 1 then for y and z ret.y ret.x..
Geo-Search (Distance) in PHP/MySQL (Performance) http://stackoverflow.com/questions/5236921/geo-search-distance-in-php-mysql-performance Search Distance in PHP MySQL Performance I have a MySQL table MyISAM containing.. of lat long pairs that I select from based on the pairs distance great circle formula from another lat long pair. e.g. all.. have a spatial extension but that one doesn't provide a distance function. Should I be looking at another database to put this..
|