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  1. #1
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    ? Multiple Maps Routing?

    Hello guys,

    This is Abhi from India, and this is my first thread on this one of the hottest forums on Navigation Maps/Products. Really appreciate the help by the fellow noeman's and moderators.

    I have a query, I have downloaded Garmin India and MMI maps for use with Garmin Mobile PC and they are working fine. I am using one map as a preloaded one and the other as detailed one. Now, the query I have is, I found that some of the places that I search in MMI maps are not available in Garmin India maps. Now, If I am using both of the maps in GMPC and then say I want to go from A (consider it a very small town) to B. 'A' is included in Garmin Maps (but not in MMI maps) to B (which is included in MMI maps but not in Garmin), then would GMPC calculate the route from A to B?

    I have tried it but somehow its so confusing that I could'nt go to a conclusion, need you guys help.

    Thanks,
    Abhi.

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  3. #2
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    Hi and welcome to Noeman and in the best section ,

    Briefly...most probably no. Because this are two different maps createn in a different ways and most probably much of the data overlap from both maps and that is why you see weird routes. If possible to create a route at all. In general the rule is not to use together maps which overlap with each other. Just choose one of them.

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    Quote Originally Posted by ddabcd277 View Post
    Hi and welcome to Noeman and in the best section ,

    Briefly...most probably no. Because this are two different maps createn in a different ways and most probably much of the data overlap from both maps and that is why you see weird routes. If possible to create a route at all. In general the rule is not to use together maps which overlap with each other. Just choose one of them.
    Thanks for the help. Looks like the best bet is to plan the route manually and donot let the GMPC autoroute it? Could you tell me which one would GMPC use to do routing if one is a preloaded map and then I put another one as detailed map? So which one would be preferred by GMPC for routing if I select both the maps in mapsets (tools>mapsets)?

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    The selected....

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    Quote Originally Posted by ddabcd277 View Post
    The selected....
    Yes, but I have selected both the maps in mapsets menu, which one would be preferred? Also could I join both the maps using Garmin Product Creator? I am a noob in Navigation systems so please spare me if the question is too stupid to be asked.

  7. #6
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    I'll say what has been my experience. I use Garmin CN and MMI v7 maps on an ipod touch, Asus M10 and GMPC. As MMI maps have the higher priority value; when both are selected, then both display and routing will be from the MMI map. If you need the CN display and routing, you'll need to deselect the MMI map. The Asus M10 has a peculiar problem with the map source selection screen; as the display of the MMI v7 map name is very long, the program crashes when the selection screen is loaded. This is not a problem in GMPC, Garmin on IOS or GMXT on other WM phones.

    To sum it up, I've not faced any problems with running the navigation with both maps selected (caveat: I've no experience of how nuvis will behave or of other overlapping maps). One thing you should not do ever is change map selection after route has been calculated, as the road co-ordinates do not exactly coincide for the two maps and you'll see the route marked outside the road sometimes!

    However if you merely need the POIs from the other map, there is no need to select both maps. POIs from the unselected map also show up on the selected map and route correctly.

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    Best explanation. Just to add the priority can be changed with gmaptool lets say. The highest is 32. Also you can make one of the maps transparent if you are not going to use it for routing. But this is just for playing.

 

 

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