Just for fun this morning I tried my street address with the following web sites from here on Poi-Factory
* terraserver.microsoft.com - shows coordinates for addresses and map locations
* gpsvisualizer.com - shows coordinates for a list of addresses
* batchgeocode.com - shows coordinates for a list of addresses
* geocoder.us - another site that shows coordinates for addresses
My results were then entered into MapSource to see how they compare. Gpsvisualizer.com and Batchgeocode.com gave the same coordinates as one another. Batch offers a Yahoo map while GPS Visualizer offers a choice of several maps. When I use MapSource by entering my home address it seemed closest to Gpsvisualizer.com and Batchgeocode.com. Geocoder.us was further away from the others and on the other side of the street. Microsoft Terraserved was about as far away from the others as Geocoder.us, but in a different direction. I have also compared these to the coordinates on file at my county's property records. It appears as if the county property records shows coordinates for a point in the center of the property.
Thanks for looking into that. I was wondering about that myself. Seems like discrepencies like this would make geocacheing really difficult sometimes. Never tried it though.
What I usually do to make my CSV files is I add the place as a favorite in my garmin using the address lookup, and then I open up the current.gpx file to get those coords and put them into my CSV file. Kind of a long process if you have a lot of POIs to make, but not bad for short lists.
Another question, it seems logical that if you get the mapsource DVD, the coords on your garmin would exactly match the coords in mapsource for a given address. Can anyone confirm this?
I can confirm it. At first I thought there were differences, i.e. finding some locations, but I have since found that they match. Also, Garmin support confirmed it for me.
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It sounds a little confusing...i guess just cause i am a newb @ the whole concept but i am gonna try the mapsource thing again tonite....i went there for a moment yesterday saw some big prices and left = ). I saved spots onto my gps yesterday where there are stop light camera's, I can't wait to get these loaded up as poi's. I am condensing down many poi files to just my local area (knoxville) and I should have a great setup to contribute in a few weeks. I dunno how many people will use it....good idea.....waste of time?? Tell me what ya think. The reason I was condensing them down originally was so that I could get 2 megs of stuff I would use onto my gps instead of 2 megs of the rest of the country's poi's and a few byte's that pertain to me.
i am gonna try the mapsource thing again tonite....i went there for a moment yesterday saw some big prices and left
The reason I suggested you do a search on this site for Mapsource is that many members with units with the built in Maps (the others, Garmin supplied Mapsource for free)have been able to obtain the DVD at no charge from Garmin. They are using it for the same purpose you want to use it for. The other discussions will help in how to phrase the request to Garmin.
I am condensing down many poi files to just my local area (knoxville) and I should have a great setup to contribute in a few weeks. I dunno how many people will use it....good idea.....waste of time?? Tell me what ya think.
If it's something like Knoxville area attractions or interesting places, I'm sure it will be well received.
If it's Knoxville area McD's and BK's maybe not so well. Then again, someone may want all the McD's and BK's in the US. I'd say, condense your poi's to your hearts content and post them when you're ready.
Most of all Have Fun Doing It!
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