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Posts: 2 | Thanked: 0 times | Joined on May 2009
#1
Cutting a long story short...

I want to use UK OS Explorer maps (1:25000 scale) which show public footpaths when I'm out walking. By describing my experience so far I'm hoping to kickstart a discussion whereby I might learn how better to proceed in this endeavor.

I managed to get it working by taking screen shots from streetmap.co.uk and processing them via mapcruncher into tiles suitable for downloading to maemo mapper. Problem with this method is it's just too fiddly and time consuming to produce the tiles.

So I got to thinking maybe I could use the default tiles displayed in a typical streetmap.co.uk webpage. These are 0.5Km squares already conveniently mapped to a 12 digit uk grid reference. Considering I'm new to python it turned out to be surprisingly easy to create a program to download a given rectangular area.

OK, so I now I have an easy way to get the tiles but how do I get these tiles to work with maemo mapper? Is it even possible?

In the mean time have modified the code described here...

http://talk.maemo.org/showthread.php?t=19009

...to periodically update a local html file which in turn displays a 2.5Km square map in the N810 web browser. Actual position on map is marked by a small red circle comprising of a transparent image positioned to reflect current coordinates. This simple setup works as far as it goes but would need further work to be really useful.

I am particularly interested in hearing of a way to use my tiles with maemo mapper and/or ideas for further developing and improving my little hacked application.

Ed
 
Posts: 2,102 | Thanked: 1,309 times | Joined on Sep 2006
#2
Have a read of this thread: http://talk.maemo.org/showthread.php...t=maemo-mapper

It gives some details about what types of sources can be used. E.g. projection type, url format. Off the top of my head I can't remember where the information about tile size (pixel and what it physically represents) is stored but this is obviously something you'll need to setup for your new source.
 
Posts: 2 | Thanked: 0 times | Joined on May 2009
#3
Sorry for the delay in replying and many thanks for the pointer.

I found much useful information there but sadly it appears their is no support for, what I as a layman would call a "flat map array of tiles"

The upside is I've now tested my simple app. which uses the web browser to display the tiles based on the output from the internal GPS and I must say it works very well. I deliberately chose a footpath that followed the route of an ex railway line so there would be no doubt as to position and the little red circle showing my exact position was spot on.

considering the html is just a few lines in total its amazing what can be achieved.

Thanks again for you helpful response.
Ed
 
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