[Talk-us] Should I realign TIGER data to Yahoo areal imagery?
SteveC
steve at asklater.com
Thu Jul 3 18:35:41 BST 2008
On 3 Jul 2008, at 09:40, Alex Mauer wrote:
> SteveC wrote:
>> short answer - YES :-)
>
> Slightly longer answer: Yes, but be careful. In many places the Yahoo
> aerial imagery is offset from real life by some amount (I've heard 30
> meters up to 1km in some cases). So if an area looks totally
> different
> from what's on the ground, correcting to match Yahoo! is OK. But if
> it's just shifted in one direction, then don't correct it without
> first
> verifying with a GPS track that the Yahoo! imagery is correct.
Yeah so I guess what I was really saying is that Yahoo is mostly
vastly better than TIGER, even if it is off a bit occasionally.
>
>
> -Alex Mauer "hawke"
>
>
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Best
Steve
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