On Dec 4, 10:30 am, Martijn van der Plaat <[EMAIL PROTECTED]> wrote: > Hi experts, > > I try to directly check in a map of a certain point is in a polygon. > see:http://profec.nl/profec/gmaps/index1.php > > first lookup my code. > > The problem is that, as you can see in the first popup, javascript > thinks polys.length() is 0, but in reality polys.length() is 2, as you > can see in the second popup. What i think is that the code goes faster > then xml can load. Strange enough the script works in IE. > Maybe the problem is solved when i pre-load the polygons before i do a > poly.length() function? Please look in my code to better understand my > problem. > My intention is an applicatie with: > > 1. longitude+latitude as input from a GPS device > 2. the input is checked against several polygons on a map > 3. the output is a unique id that belongs to the found polygon. > 4. I use the id in my further program because the id is identical to > an id in a database > > so i only use the whole map as a check function to know in which > polygon my GPS exists. > > Maybe another solution is not using the google map at all, and just > lookup if my current gps coordinate is in a specific list of polygons, > using point-in-polygon algoritmehttp://alienryderflex.com/polygon/ > But i thought because the google map can tell me directly in which > polygon the point is i dont have to walk through the whole list of > existing polygons, and thereby the google map solution is faster. But > at the moment i realy doubt this! >
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