address is off by a 1/2 block.

 

Hello all,

When I enter my friend's address, my GPS overshoots the location by about a half a block. I can get the right location by pressing the "coordinates" button but then I can't see the proper address info in my favorites file.

Does anyone know of another way to do this? I'm using the nuvi 1490lmt.

Thanks

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Are we there yet?

no other way

You can either agree with this 1/2 block shift or use coordinates. Eventually after saving place to favorites from coordinates try to edit name and description for this position in favorites. I don't know what can be edited in your unit so just try.

There is no other way. Addresses on maps are always estimated, so usually they are off more or less. Most accurate are when block is split evenly with numbers (like city residential area with plots of this same size). There was ttopic long time ago about why address on map doesn't always fit real location. You can look it up.

Use EPE to edit the

Use EPE to edit the favorites that are in the GPS. You do this by attaching the GPS to the computer. Move the location and then save the favorite again. On my 1350 the favorite will have a name convention of "Friend1" if the original is "friend". Delete "friend" and then edit the new name.

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Nuvi 2460LMT.

For me, the easiest thing to do>>

is locate the address on google maps, stick a pin right at the driveway and then send the co-ordinates to my 1490 with the friend's name specified.

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"You can't get there from here"

Close...

synctronic wrote:

Hello all,

When I enter my friend's address, my GPS overshoots the location by about a half a block. I can get the right location by pressing the "coordinates" button but then I can't see the proper address info in my favorites file.

Does anyone know of another way to do this? I'm using the nuvi 1490lmt.

Thanks

Isn't that close enough. I don't expect it to be pin point but maybe I've been using mine for too long and don't expect anything better.

That works also.

Then there is no re-naming that needs to be done or messing with favorites. (I do that ocassionly with locations the GPS can't find)

TMK wrote:

is locate the address on google maps, stick a pin right at the driveway and then send the co-ordinates to my 1490 with the friend's name specified.

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Nuvi 2460LMT.

We expect...

@synctronic

We often expect that devices we purchase will be able to work magic. However, if one thinks a while about it, then one remembers that these devices that we spend hundreds for are not like devices that one might spend thousnads for (like surveyor equipment)

We are dependent on the number of satelites that our unit can acquire.

We are dependent on Navteq to accurately locate an address at the correct coordinates as opposed to an approximation based on the progression of street address. Think about that for a minute. Do we really expect Navteq to check out every address on every street in every city to be sure that the coordinates are at the driveway? I would expect not.

However, you might try an exercise. Go to Google maps (www.googlemaps.com) and put in your friends address. Zoom in and see if it is where you think it ought to be. Then do the same thing with Mapquest (www.mapquest.com). Be sure to look at their satellite view. In my case, Google is in my back yard and Mapquest is at my mailbox.

The real test is Navteq (www.navteq.com). It put the flag further into my back yard than did google.

The take-away is that we should not expect perfection. We have to use our eyes in addition to our GPSs.

Welcome to the site. Wish we had a more exact answer to your question.

More than a half a block..

No problem for me unless an Interstate is between the programmed and the actual position. It happened once when I wanted a cup of coffee at McDonalds.

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1490LMT 1450LMT 295w

Not unusual

Doesn't happen often, so far it hasn't created any grief for me. What i just found out though is that i cannot delete a phone number once I have entered it. Can't make it blank again.

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2 DriveSmart 65's - We do not live in Igloo's and do not all ride to work on snow mobiles.

Have you checked for new firmware?

When I bought a new Garmin, it wasn't as precise as my older Garmin. I did a firmware update and it seems better now.

I agree

LongAce wrote:

Isn't that close enough. I don't expect it to be pin point but maybe I've been using mine for too long and don't expect anything better.

As long as it gets me within a block I'm happy, I've had mine a couple times tell me a place was on the left when it was really on the right. Get me in the neighborhood, I can figure out the rest.

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. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

Coordinates off

Sometimes it is a problem. Sometimes it isn't. I find it most annoying when in an unfamiliar area.

half a block overshoot

not good, this kinda concerns me

It happens

as someone already mentioned it is a pain at night when you are in an unfamiliar area

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260, 295W, 1490T,2455LMT

I just write down the

I just write down the address on a post-it so if the navigated position differs much, I can easily find it myself. Don't go nuts about what the GPS's limitations are. It gets you there - close enough.

Fred

GPS is ok, Map is probably the problem

I have had similar problems with my home. Being that I purchased it new, for many years all the maps were off. Yahoo maps, google maps, GPS maps, etc..

Eventually it will probably get fixed in some future map update.

In the meantime, when you are at your friend's home's driveway, press on the screen and save the location to your favorites.

NAVTEQ Map Reporter

You can submit a Address Marker/Location correction to NAVTEQ through Map reporter. Someday it might actually get corrected in a map update. This will allow you to make changes to the location of a house or building

http://mapreporter.navteq.com/

Or make new friends a 1/2 block down from your current friend. This is mostly likely the faster option.

As others have said, your best quick fix is to save your location next time you're there or use Google maps and send it to your Garmin

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Garmin Nuvi 1490LMT, Nuvi 750, Nuvi 255LT

ANOTHER WAY

synctronic wrote:

Hello all,

When I enter my friend's address, my GPS overshoots the location by about a half a block. I can get the right location by pressing the "coordinates" button but then I can't see the proper address info in my favorites file.

Does anyone know of another way to do this? I'm using the nuvi 1490lmt.

Thanks

You saved the "coordinates" button. When you get home, transfer your favorites to MapSource. Then edit the favorite showing the name, address, phone, etc, and transfer edited favorites back to the 1490

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1490LMT 1450LMT 295w

+1

soberbyker wrote:
LongAce wrote:

Isn't that close enough. I don't expect it to be pin point but maybe I've been using mine for too long and don't expect anything better.

As long as it gets me within a block I'm happy, I've had mine a couple times tell me a place was on the left when it was really on the right. Get me in the neighborhood, I can figure out the rest.

+1

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Anytime you have a 50-50 chance of getting something right, there's a 90% probability you'll get it wrong.

Accuracy

Jgermann, you bring up an interesting point about sources of inaccuracy. In my case, my 265WT has never had my home address correct. It shows my house several properties south of where it really is. Last year, a termite inspector knocked on my door, thinking I was his next appt. No, the address he wanted was several houses up the street. Yes, he was using a Garmin GPS.

I checked Navteq.com just now and found that it has my address perfect in the satellite view. This makes me wonder why my Garmin GPS with latest firmware and latest map are off by a few addresses. I suppose it could be that it can't see enough satellites when on my street, but that would be surprising to me since it has a clear view of the sky in all directions.

I surely don't expect perfection, but my house and perhaps one or two other locations are the only ones I've found to be off so far. I know where I live, so that's not a problem. smile Just a curiousity.

That...

that coordinate of being off 1/2 blocks can be seen as an error or thank gosh I'm here. Also, if accuracy is really important, the best way to get 'on the money' accuarracy is to enter the data in on a coordinate software.

Thanks everyone

Thanks for the input everyone.

My original question was not how to get the exact location on my gps. I know I can do that with coordinates. My question was after I get the coordinates, how can I see the actual address info in my favorites.

I think spokybob has the solution. I will give that a try.

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Are we there yet?

Why Is It That Far Off?

My gpsr has the same issue with "my" home address. It's off by about 1/2 block. So far other addresses I plug in, when I arrive it's pretty much on the money. I wonder why it's off by that much for "my" address?

It used to bug me but again, I do know where my house is without the gps...;b

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OK.....so where the heck am I?

Complicating factors

Check out the section entitled "Complicating factors" and in particular, the subsection "Finally, several caveats on using interpolation:"

http://en.wikipedia.org/wiki/Geocoding

Need more?
http://www.ij-healthgeographics.com/content/2/1/10
Figure 4 is worth a detailed look.

Address off by 1/2 Block

I have experienced this many times.... and I even get the same error using Mapsource and the address.

@craigw

thanks for the links - good explanation

Off by half block

I am going to take a deeper thought process and say that your GPS is sometimes not as accurate as you want. To prove my point I will use the CHOICE HOTELS POI on this site.
I try to exclusively use Choice Hotels because of their rewards and I have had 6 free nights this year so far. My complaint is that several times the motel was not there. I read that the owner of the POI used batch GeoCoding. I took a state and downloaded the motels in it and then with TourPoint Editor I did GeoCode with each motel in satellite mode. I found that with each motel it showed one of four possibilities. It either used address ,street, city or zip in finding the place. I found that 10% of the motels were off. Each Choice Motel has their own website which gives the coordinates so I compared and came up with this conclusion. I then did a batch GeoCode and it had the same errors (something one can do while watching football)
I then did the same with Extra Poi Editor and came up with the same results so it is not those programs but GeoCode is in error. One motel was 5 miles away as the crow flies.
For accurate mapping I use http://mapper.acme.com/ in satellite mode and use the coordinates from it.

read the fine print

kurzemnieks wrote:

For accurate mapping I use http://mapper.acme.com/ in satellite mode and use the coordinates from it.

If you look at the bottom right of the map displayed at http://mapper.acme.com it shows Map data ©2011 Google , so if they are using Google Maps how can that be more accurate that going directly to Google?

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Garmin 38 - Magellan Gold - Garmin Yellow eTrex - Nuvi 260 - Nuvi 2460LMT - Google Nexus 7 - Toyota Entune NAV

New one on me.

kurzemnieks wrote:

Each Choice Motel has their own website which gives the coordinates

I didn't know that. Useful info. Thanks

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1490LMT 1450LMT 295w

But their coordinates are also off!

spokybob wrote:
kurzemnieks wrote:

Each Choice Motel has their own website which gives the coordinates

I didn't know that. Useful info. Thanks

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Nuvi 2460LMT.

if they are using Google

if they are using Google Maps how can that be more accurate that going directly to Google?

I never said Acme is more accurate BUT If you are using Excel spreadsheet it is faster entering the positions for Google uses 93°36'10.57"W as position and Acme uses W 93.60294 which if you convert a gpx file to cvs all you need to do is put the - sign in if you are in North America. Faster but not necessarily better.

sorry

kurzemnieks wrote:

if they are using Google Maps how can that be more accurate that going directly to Google?

I never said Acme is more accurate BUT If you are using Excel spreadsheet it is faster entering the positions for Google uses 93°36'10.57"W as position and Acme uses W 93.60294 which if you convert a gpx file to cvs all you need to do is put the - sign in if you are in North America. Faster but not necessarily better.

Perhaps it was my interpretation of what you wrote, when I read “For accurate mapping I use http://mapper.acme.com/ in satellite mode and use the coordinates from it.” I assumed you meant mapper.acme was more accurate than the rest.

As far as how Google gives you the coordinates I don’t see a problem, if you zoom in on a spot on the map and then right click on the mouse and chose What’s here? Google will display it as “35.960223,-92.724609” ,you can then copy and paste.

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Garmin 38 - Magellan Gold - Garmin Yellow eTrex - Nuvi 260 - Nuvi 2460LMT - Google Nexus 7 - Toyota Entune NAV

Not by much

I just checked the last two Choice Motels where we stayed. Comfort was off by 75 feet. The Quality was dead on. BTW, on these two, the long/lat was at the driveway. I used my track info.

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1490LMT 1450LMT 295w

Choice Hotels is sometimes wrong

kurzemnieks wrote:

I am going to take a deeper thought process and say that your GPS is sometimes not as accurate as you want. To prove my point I will use the CHOICE HOTELS POI on this site.
I try to exclusively use Choice Hotels because of their rewards and I have had 6 free nights this year so far. My complaint is that several times the motel was not there. I read that the owner of the POI used batch GeoCoding. I took a state and downloaded the motels in it and then with TourPoint Editor I did GeoCode with each motel in satellite mode. I found that with each motel it showed one of four possibilities. It either used address ,street, city or zip in finding the place. I found that 10% of the motels were off. Each Choice Motel has their own website which gives the coordinates so I compared and came up with this conclusion. I then did a batch GeoCode and it had the same errors (something one can do while watching football)
I then did the same with Extra Poi Editor and came up with the same results so it is not those programs but GeoCode is in error. One motel was 5 miles away as the crow flies.
For accurate mapping I use http://mapper.acme.com/ in satellite mode and use the coordinates from it.

I have found the Choice Hotels file to be "buggy." Lots of coordinates that are off by more than just a few blocks.