Questions regarding accuracy using the POI Editor for Maestro 4250
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16 years
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Hello, I am a newbee using a Magellan Maestro 4250. After reading up on Geocoding, I decided to try it myself but not having much luck with accuarcy.
I imported a csv file with (street address, city , state and zipcode), into Geocoder. It gave me back some coordinates.
I saved these back to the csv file. Then I opened it in the Magellan POI editor ..... dowloaded it to the GPS Unit.
However, on most of my entries it was usually accurate up-to the street NAME but never to the EXACT address. (none of my POI entries even showed a Street number in the GPS Unit)
1. IS there a good Geocoder that can do batch entries Exactly down to the street address (street number and street name)
2. Do the coordinates need to contain certain number of digits to be accurate down to the street level.
**ex: I used Geocoder.us to locate the coordinates for the address 10807 Jones Road, Houston, TX 77065 as being (29.929557, -95.584959).
HOWEVER: when I copied the coordinates into the Magellan POI Editor it rounded them off to Postnet 29.92956 -95.58496 10807 Jones Road, Houston, 77065
Then I uploaded it to my Magellan Maestro 4250 by using the Magellan POI Editor.
when I selected the Postnet POI from the GPS Unit, the GPS displayed:
POSTNET, JONES Rd
HOUSTON, Texas
Why did the 10807 (the street number disappear) Keep in mind Jones road is almost 10 miles wrong. How can I be sure, that the GPS is not guiding me to 1087 Jones Road instead of 10807 Jones road.
And on some of the waypoints it completely changed the street name itself
Any help would be greatly appriciated!!
Accuracy
Did you try to have the unit take you to that address? That should let you know it's accuracy.
Maybe the display only allows a certain number of characters, Perhaps leaving off the zip code would allow the street address number to display.
vinniekhosla
However, on most of my entries it was usually accurate up-to the street NAME but never to the EXACT address. (none of my POI entries even showed a Street number in the GPS Unit)
You have just discovered one of the "features" or quirks of the Maestro series. That's just the way it works. Another associated quirk is that, even though it appears to store a description field (address, phone, etc.) in a custom/user POI file, there is no way to get to that information once loaded into the unit.
So..........you could build a POI file with coordinates accurate enough to give you a single address but you would never SEE that address on the unit unless you put it in the POI file yourself and even then it must be in the NAME field.....and that is limited to about 50 characters or so.
Nice, huh ? NOT!
Magellan Maestro 4250// MIO C310X