burkart
5th May 2009, 04:32 AM
I don't have a data connection, yet I have a GPS-capable device and thus to use mapping software on the fly I need to preload maps beforehand. There are a number of solutions out there that I've tried (MGMaps, Google Navigator, GPS Tuner, etc.), but they all have very limited functionality.
I've found that Google Maps itself is the best piece of GPS mapping software. It stores map data on internal storage in \application data\googlemaps\cache-GLM.dat. I've seen reports that this file has a size cap imposed by the application, but I have yet to notice this--my current cache file's size is 24MB, and it just seems to get bigger as I explore more area (on wifi).
So my question is, can this file be hacked, so that one could in principle preload arbitrary map areas into it? Is it some common format of which I am unaware? Can anyone analyze the file and figure out if there's some way to manipulate it? I tried opening it in like winrar obviously but no success. If this could be figured out it could provide a lot of utility to a lot of people I think, eliminating the need for all the inelegant third-party Google Maps interfacers like MGMaps.
I attached a small example of the cache-GLM.dat file. (It's an overhead of my office. Guess my occupation.)
Thanks!
I've found that Google Maps itself is the best piece of GPS mapping software. It stores map data on internal storage in \application data\googlemaps\cache-GLM.dat. I've seen reports that this file has a size cap imposed by the application, but I have yet to notice this--my current cache file's size is 24MB, and it just seems to get bigger as I explore more area (on wifi).
So my question is, can this file be hacked, so that one could in principle preload arbitrary map areas into it? Is it some common format of which I am unaware? Can anyone analyze the file and figure out if there's some way to manipulate it? I tried opening it in like winrar obviously but no success. If this could be figured out it could provide a lot of utility to a lot of people I think, eliminating the need for all the inelegant third-party Google Maps interfacers like MGMaps.
I attached a small example of the cache-GLM.dat file. (It's an overhead of my office. Guess my occupation.)
Thanks!