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Cellular forums Home > Archive > Garmin GPS > December 2006 > What companies provide GPS map data?
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What companies provide GPS map data?
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| Ramon F Herrera 2006-12-15, 4:33 am |
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I am told that there is one one (?) or two companies which provide the
original raw map data that is purchased by Garmin, Magellan, Tomtom,
etc. What company is that (or those)?.
If I upload some correction to Garmin's web site, will that improvement
be used by Garmin units only or they send it to their providers and
therefore benefit their competitors?
Has anyone had the opportunity to compare the accuracy of the POIs from
Garmin vs. Magellan, for instance?
-Ramon F Herrera
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| Ramon F Herrera wrote:
> I am told that there is one one (?) or two companies which provide the
> original raw map data that is purchased by Garmin, Magellan, Tomtom,
> etc. What company is that (or those)?
Garmin and Magellan use NavTeq, TomTom has been using TeleAtlas but I
think they've also been looking at NavTeq.
> If I upload some correction to Garmin's web site, will that improvement
> be used by Garmin units only or they send it to their providers and
> therefore benefit their competitors?
AFAIK, they just pass information along to NavTeq. Probably best to
send the corrections to NavTeq directly. They have a form on their
website for customer input. They send out an automated immediate
acknowledgement and then follow it up with a more detailed description
once they've confirmed the problem and updated their database.
TeleAtlas also welcomes customer corrections but I haven't had occasion
to offer them any (my only TeleAtlas maps are very dated from when
Garmin still used them).
> Has anyone had the opportunity to compare the accuracy of the POIs from
> Garmin vs. Magellan, for instance?
They both get the map data from NavTeq, but there are additional
sources for POIs and they differ somewhat in deciding what types of
locations to include.
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| Dale DePriest 2006-12-15, 4:33 am |
| Read my article on Map Makers available on the GPS link from my site.
Dale
Ramon F Herrera wrote:
> I am told that there is one one (?) or two companies which provide the
> original raw map data that is purchased by Garmin, Magellan, Tomtom,
> etc. What company is that (or those)?.
>
> If I upload some correction to Garmin's web site, will that improvement
> be used by Garmin units only or they send it to their providers and
> therefore benefit their competitors?
>
> Has anyone had the opportunity to compare the accuracy of the POIs from
> Garmin vs. Magellan, for instance?
>
> -Ramon F Herrera
>
--
_ _ Dale DePriest
/`) _ // http://users.cwnet.com/dalede
o/_/ (_(_X_(` For GPS and GPS/PDAs
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| dold@85.usenet.us.com 2006-12-15, 4:33 am |
| In sci.geo.satellite-nav Ramon F Herrera <ramon@conexus.net> wrote:
> If I upload some correction to Garmin's web site, will that improvement
> be used by Garmin units only or they send it to their providers and
> therefore benefit their competitors?
For Garmin City Select North America, the source is Navteq, and the
corrections may be posted to http://www.navteq.com/updates/mapfeedback.html
(MapSource-Help-About-Product Info shows Navteq).
--
---
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5
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| Steve Scott 2006-12-15, 10:33 am |
| I'm curious about this. I was trying to find a road on my Garmin C530
yesterday. The road was on MapQuest and I think they use NavTeq. I
finally called Garmin support. The tech person dug around and the
road I was looking for wasn't on the C530 map. She suggested I send
in an error report to Garmin.
So that begs the question, if Garmin and MapQuest both use NavTeq, why
is a road on one but not the other? Different versions of maps?
On 14 Dec 2006 21:17:12 -0800, "peter" <prathman@comcast.net> wrote:
>AFAIK, they just pass information along to NavTeq. Probably best to
>send the corrections to NavTeq directly. They have a form on their
>website for customer input. They send out an automated immediate
>acknowledgement and then follow it up with a more detailed description
>once they've confirmed the problem and updated their database.
>TeleAtlas also welcomes customer corrections but I haven't had occasion
>to offer them any (my only TeleAtlas maps are very dated from when
>Garmin still used them).
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| sierra 2006-12-15, 10:33 am |
| [color=darkred]
The system seems to work. I noted an error on version 8 of City Nav
Europe - a bridge over a river bed on a new estate had been relocated
due to geological problems - and version 9 shows the revised layout.
The original data had obviously come from the developer's plans via the
local authority, the national mapping department then NavTeq.
Next task is to get NavTeq to revise the rest of the estate layout and
put in road names
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| Steve Scott wrote:
> I'm curious about this. I was trying to find a road on my Garmin C530
> yesterday. The road was on MapQuest and I think they use NavTeq. I
> finally called Garmin support. The tech person dug around and the
> road I was looking for wasn't on the C530 map. She suggested I send
> in an error report to Garmin.
>
> So that begs the question, if Garmin and MapQuest both use NavTeq, why
> is a road on one but not the other? Different versions of maps?
It may just be an issue of the timing. The current Garmin CN-NA maps
came out this summer, so they're presumably based on the NavTeq
database shortly before that release. MapQuest's website may well have
a more up-to-date version of NavTeq data.
If that's the case then the missing road should show up in the next
release of CN.
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| Seagull 2006-12-15, 3:33 pm |
| In alt.satellite.gps Steve Scott <sscott1@twcny.rr.com> wrote:
>
> So that begs the question, if Garmin and MapQuest both use NavTeq, why
> is a road on one but not the other? Different versions of maps?
Two possible explanations:
1. Garmin recodes NavTeq data to their own format, so it's possible a
road got dropped or lost.
2. The Garmin maps are older. Yahoo, Google, etc. only have to update
the maps on their servers, so they can post changes very quickly. I
believe NavTeq has a quarterly release schedule. Garmin has to
create new CD's, embed the new maps in their hardware, etc. It takes
longer to do, and quarterly releases would probably be too much
for the market.
--
\ carpe cavy!
seagull @ aracnet.com \
http://www.aracnet.com/~seagull/ \ (seize the guinea pig!)
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| Jim Townsend 2006-12-15, 10:33 pm |
| Ramon F Herrera wrote:
>
> I am told that there is one one (?) or two companies which provide the
> original raw map data that is purchased by Garmin, Magellan, Tomtom,
> etc. What company is that (or those)?.
FWIW, it varies by country. U.S. Maps may be Navteq, but for Canada
Magellan uses an outfit called DMTI Spatial Inc.
http://www.dmtispatial.com/
They are MUCH more accurate and have more detail and street names than
the maps of Canada that Navteq provides.
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