MAPPOINT Q & A

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641 Paul - April 9, 2002

Has Microsoft every quoted an accuracy figure (within 10 meteres) for their maps? I see that there is an answer in the FAQ, but it is not clear who responded, if this was Microsoft or another user of MapPoint.

Answer:

I suppose it depends on what you mean by accuracy: Lat/lon to physical location, address to physical location, ??? I didn't find any statement of map accuracy on Microsoft's MapPoint site, but anything there is Microsoft's work. Did you see info on Microsoft.com or Mp2kmag.com?

The largest source of error that I have found has been deviation between found address position and actual position. I think most of this can be attributed to inaccuracy of the underlying street segments. For example the short street I live on actually has 4 houses on my side. The addresses range from 3035 to 3051, but addresses will be found on the segment from 3031 to 3099. Therefore the distance between where 3051 is and where it is found on the map due to the interpolation between 3031 and 3099 is significant for some purposes. For most uses, however, the difference is not important.

- Walt Cygan

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