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Will GoogleMaps make me lost in Sorocaba? No, maemo-mapper’ll help me!

In last two weeks I was testing a GPS device that I bought to use with maemo-mapper on my inter-states trips.

Here in my city (Curitiba – Paraná – Brazil), maemo-mapper works very well…. My car is always in the route ( a green line in maemo-mapper ), I know perfectly where streets are, and I know exactly where take the exits on the highways. But Curitiba is a big and important city, so I decided to test it in Londrina – PR.

Londrina is a little country tow here in Paraná, but probably is the second more important city in my state. Anyway, how I was saying writing before, GoogleMaps is so faw away to be precise in Londrina. Take a look in the photo below:

GoogleStreetMaps error

The red line is what my car was doing and the green line is what GoogleStreetMaps was telling me to do.

Now I know; it’s not a Google’s problem, but it’s a MapLink problem. Maplink is the company who provides street-maps to google in Brazil.

Anyway, on this situation, I can’t trust in maemo advises anymore. Google’s way points doesn’t work anymore. So I decide to fix this problem writing a “mapper-calibration” feature inside maemo-mapper. And its ready now.

Go to “Menu/Maps/Map Calibrate“. After that, just click in a point that you think you really are.

I sugest you to stop your car in some corner, find this corner in mapper, and click on it. It’ll be more precise.

And the result will be something like that:

GoogleStreetMaps fixed by maemo mapper

Há! Much better now!

I don’t know if this problem happens in another countries too, but if you think that this feature is interesting to you, you can download the patch here, or get the compiled package. (2008-version only, sorry folks)

Just remember to disable this feature when you don’t need it. =)

So, on the next weekend I’ll be in Sorocaba testing this feature. Then I’ll describe if this is useful.

So, nice weekend for everyone!

Bye!

[update: 19/01/2008] BTW, I was forgotting. Maemo-Mapper is very well developed. They have a nice (and interesting) unit-system, so its very easy to transform pixels into latitude/longitude and vice versa. Congratulations Maemo-Mapper’s Team!

6 Comments

  1. roberto pompeu

    Hey, thanks!
    I had the same problem in a trip I did from Brasilia/DF to Cavalcante/GO (Brazil).
    My car was on the side of the road for about 200km… Thanks

    Posted on 20-Jan-08 at 7:23 pm | Permalink
  2. 200KM?!?!? LOL!

    My problem was not so big (200m)… I hope that in Sorocaba the problem be not so big too =).

    []’s

    Posted on 20-Jan-08 at 7:26 pm | Permalink
  3. 2beers

    Thanks for the info!
    SO if i understand you right, it IS possible to navigate in brasil with GPS? No matter where u are?

    Cause i never found any GPS maps for brasil (besides SP/Rio) and i would love to use GPS in N/E-brasil (sao luis i.e.)

    Posted on 21-Jan-08 at 12:38 pm | Permalink
  4. Maps in Québec also seems to be off. After I saved my track from Maemo Mapper and converted it to KML for Google Maps: although I was right on the street on Maps (on N810), I was in between streets in Google Maps..

    Posted on 21-Jan-08 at 1:54 pm | Permalink
  5. @2beers: Yes, off course that is possible. But, where you are matter, and what application you are using matter too!
    GoogleMaps + Maemo-Mapper works very well in my City, but another solutions (like navcore) doesn’t.
    And I don’t know how googlemaps works in São Luis… You can verify it using the “Satelite” map and see if streets are exactly on their real position on the satellite map.

    @Pierre-Luc: Hi Pierre! Thanks for you comment.
    So, you can have a little problem (that I’m working on to fix). The problem is that when you use my patch, GPS coordinates are be changed, so if you save your track you will have non-corrects coordinates. Can you see the question here? The problem is with GoogleMaps, but we can’t not “fix” googlemaps, so I adapt the GPS to GoogleMaps. But when GoogleMaps fix their problem, your track will be wrong….

    Posted on 21-Jan-08 at 2:07 pm | Permalink
  6. To me it is necessary to find

    Posted on 24-Feb-08 at 5:28 pm | Permalink

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