Hello Shyamdlr,
I also was looking for a quick way to convert mp to shp, but so far no luck.
What I did is the following.
I created my shp files by using cGPSMapper. There are at least 2 problems arising from this:
1: The headers of the tables produced by cGPSMapper are different from the ones needed by MPC; for instance in cGPSMapper files the type of roads are called "TYPE" and the values are numbers e.g "24", while MPC needs as an input "GRMN_TYPE" with text as input e.g. "PRINCIPAL_HWY". In the helpfile from MPC you can find the necessary header-names and possible values. I am using the free software FGIS to change the headers and the free software Quantum GIS to change the values and draw new polylines (roads), polygons (areas) and points (POI). Quantum GIS is a very nice software, but sadly it can not change the headers; thankfully FGIS can.
2: In GPSMapEdit a road could be drawn as one complete line with different sidestreets connected to it. MPC does not like that. If you do this, you will notice that most lines will not be routable. You will need to split every line (road) per sidestreet and give this its own Link-ID number. This is a lot of work, especially if you have many roads. Maybe there is another GIS software out there that does this automatically.
You can create your own 3D-buildings, YAY!!! But so far this is one hell of a job. So far I have not found an easy way to do this. I notice that in de sample files they have used AutoCAD and a plugin to create the necessary WaveFront files, but they are very costly. And I'm doing this alone and as a hobby, so the money ain't available. I have tried using Google Sketchup, but for some reason the buildings turn 90 degrees and I can't get the pictures right. Also I have tried ZModeler2 which has nice options, but on my pc it gets very slow when I have too many objects on the screen (running Windows 7 32 bit). On my laptop I don't have this problem (windows XP). I will look into this in the future since I don't have that much spare time right now.
Hopefully my little explanation can help you get started. If you happen to find a good manual on the subject, please share.
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