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It is entirely possible that the two
datasets are that far off. A lot of TIGER was compiled from 1:100,000 scale
maps, although more accurate data has been injected in some areas. If
you have metadata for the datasets they might be able to give you accuracy
information. If the differences between StreetInfo and
TIGER appear systematic, that is,
features are shifted by about the same amount in about the same direction, then
it's possible that there's a projection issue. In this case, the datum of one
of the two datasets could be wrong. Hope this helps Spencer From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ericson, Tim I have some applications where I need to
load Tiger Data along with the StreetInfo data that we purchased from our
MapInfo dealer. When I compare the two… for example
I-25 in Denver in both databases, there is a variance of up to 200 feet
(I-25/Tiger Data from I-25 StreetInfo Data). Is there a projection issue that I’m
missing (both are in Long/Lat) Is there just that much inaccuracy in one
or the other? What am I doing wrong? Can I correct
it (short of redrawing the Tiger Data element that I need…..) Thanks! Tim Ericson Network Engineer Qwest Communications On Loan to Harris Corporation Federal Aviation Admin – FTI Program
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