[Talk-ca] [Imports] [Talk-us] TIGER considered harmful

[Dan Putler]

Kate,

Nothing at all. The thing is that in many instances the road vectors,
and the address ranges, may well be more accurate in data from the
county than from TIGER data. The Census Bureau has done some things to
clean up what there road vectors, but for some counties I've looked at,
there is still room for improvement. This was about a year ago, so if
even more improvements have been made, I stand corrected.

Dan

On Sun, 2009-11-15 at 18:11 -0500, Kate Chapman wrote:
> Dan,
> 
> 
> What's wrong with doing automated addressing imports in situations
> where we have point level address data?  Or are you just referring to
> not importing the addressing that is available for the Tiger data?
> 
> 
> Kate Chapman
> 
> 
> On Sun, Nov 15, 2009 at 6:00 PM, Dave Hansen <dave at sr71.net> wrote:
>         On Sun, 2009-11-15 at 14:49 -0800, Dan Putler wrote:
>         > The
>         > upshot, for a number of US counties you would rather use the
>         county
>         > centerline road data rather than TIGER data as the basis of
>         the
>         > import.
>         
>         That's really good news.
>         
>         This is exactly what happened for Massachusetts.  They had
>         better data,
>         and were willing to get it imported in lieu of TIGER.  I think
>         those two
>         things are the key:
>         
>         1. Data exists in a form that it can be imported
>         2. There are willing people to do the import
>         
>         If we don't have both of those things, it makes sense to skip
>         doing
>         something like TIGER and use the local data.  But, I think
>         just having
>         the data be theoretically available to import should be enough
>         to stop
>         an inferior but available set getting imported.
>         
>         But, I'm not sure we're going to do any truly automated
>         addressing
>         imports in the US, anyway.
>         
>         
>         -- Dave
>         
>         
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> 
> 
-- 
Dan Putler
Sauder School of Business
University of British Columbia