Tagged Questions

7
votes
2answers
526 views

Nearest point on a line ( Spherical / Mercator projection )

I have a line (Ax,Ay - Bx,By) over a mercator projection (google maps) and a random point (Cx,Cy) nearest to that line, i would to know the closest point (transparent blue on the image) over that line ...
2
votes
1answer
616 views

How to insert google maps lat/lng into postgis in geometry datatype

I came across: https://developers.google.com/maps/articles/phpsqlinfo_v3 I've changed the code a bit and all process is well done for postgis database. I get the data from infobox when user clicked. ...
3
votes
1answer
4k views

Drawing polyline that grows as the car moves by taking data from MySql and PHP in Google API

I wanted to show the polyline on google Map as car moves with animation (like in this site: http://econym.org.uk/gmap/example_cartrip2.htm) by taking data from MySQL and PHP. For that i refered the ...
0
votes
1answer
493 views

Reference materials for learning Google API V3 with PHP and MySQL (tracking)

I am new to this Google API. Now i wanted to learn Google API with PHP and MySQL. Actually i wanted to create an application that will track x,y coordinates coordinates on real time bases for ...
5
votes
4answers
3k views

How to Geocode 300,000 addresses on the fly?

I have a database which has 300,000 address, which are to be shown on map. I know if I geo-code all the address it will be too expensive for me. So I was wondering if it is possible to geo-code the ...
2
votes
1answer
1k views

Getting Started with Map Server 6 and Google Maps

I'm relatively new to GIS, but what I'd like to do is display map layers on top of Google Maps. From what I understand, mapserver provides the tiles that can be overlaid onto a Google Maps page. I'm ...
8
votes
3answers
845 views

How to obfuscate data when using Google Maps?

I've been working on a google map (v3 of the api) that is plotting 120 markers or so (or will do shortly) - see http://www.mediwales.com/mapping. If you view the source the map data is for all the ...