[gps-talkusers] Re: Skewed POI Data
- From: Charles LaPierre <charles@xxxxxxxxxxxxxxxx>
- To: gps-talkusers@xxxxxxxxxxxxx
- Date: Thu, 30 Oct 2008 16:18:49 -0700
Hello Joleen,
A lot of fixes to the original map data in your home town has
occurred since the 2007 data, for instance blocks which use to have
address ranges from 200-300 now have the correct address range of
100-200. Your house being at the wrong end of your street is an
issue, but even Google has your home at the other end of your street
and Google uses both Navteq data as well as TeleAtlas. Obviously
there were city planning map issues made initially and the base maps
were incorrect from the start for your home town. To fix these
issues will take TeleAtlas and Navteq some time to sort out, but I am
confident they will eventually fix them. Currently there isn't an
easy way to inform TeleAtlas of map errors as they have switched to a
Flash based map error reporting mechanism which is not
accessible. However, Sendero is planing on creating our own web page
to enter in errors for TeleAtlas be this will take some time to implement.
As for POIs being off by 100 feet or more is normal, all POIs from
TeleAtlas are located at the street so proper routing can be made for
vehicles. Sendero has put in the building blocks to allow users in
the future to re-position the Off-street locations of businesses to
the front door of these establishments, and we plan when route
creation to use both the on-street and off-street locations of POIs
to create more blind-friendly routes to the businesses front door. I
don't not yet when this functionality will be added but steps have
been put in place to make this possible moving forward.
Thank you
Charles
At 04:54 PM 10/30/2008, you wrote:
Hi All,
Sadly, the Version 5 POI database is still very skewed in my home
area. My church, for example is about 500 feet off from the POI
data. My home is at the wrong end of the block. Starbucks should
be on the corner of 1st and Main, but when I go to 1st and main in
virtual mode, Starbucks is 107 feet away. Loney's Harvest Food on
South 2nd is more than a block away from its actual location. If I
place my virtual location at 2nd and Morton, the real Loney's is on
the southeast corner of that intersection. True enough, the actual
store is set far back from 2nd Avenue with its parking lot in front
of it. However, the GPS POI places it north of Maple, 782 feet
north of itself.
The POI data for my Hair salon, Special FX, is in close
approximation with the POI data for Loney's and this is also far
off. In reality, it is near 2nd street in the Loney's parking
lot. the POI is, indeed, near Loney's, but this puts it more than a
block away from itself.
The YMCA is on the southeast corner of Birch and Park. The POI data
puts it >100 feet away, North of Birch on park.
some businesses seem to be close to their actual location but on the
wrong side of the street.
The map indicates that Birch Street does not go through at 2nd.
It indicates that the intersection does not line up, but in reality
it does. There are many streets that do not line up here, but this
is not one of them. I would still say that the database is still so
confused here that it makes the GPS POI data of little value. What
can be done to correct this? I thought that Tele Atlas was to have
come here to check things out.
Would it be helpful if I visit several businesses that I know to be
off and set a user POI and send the file to Sendero, would this help
fix the problems?
Please know that these are not isolated samples. They are just
places where I am vary familiar and can easily visit them in virtual
mode. I purchased this upgrade very hopeful that the anticipated
corrections had been made to the map for my area.
Joleen
Charles M. La Pierre
CTO Sendero Group
"The GPS company." Distributors of the mPower, PK, Victor Stream,
Voice Sense, KNFB Mobile Reader, Talks, Miniguide and ID Mate
1-888-757-6810
Lat. 37 15' 25" N Lon: 121 53' 04" W
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