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Stephen,<br>
<br>
Stephen Frost wrote:
<blockquote cite="mid:20080622123806.GZ31154@tamriel.snowman.net"
type="cite">
<pre wrap="">Bob, et al,
* Bob Basques (<a class="moz-txt-link-abbreviated" href="mailto:bob.b@gritechnologies.com">bob.b@gritechnologies.com</a>) wrote:
</pre>
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<pre wrap="">Stephen Woodbridge wrote:
</pre>
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<pre wrap="">Bob Basques wrote:
</pre>
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<pre wrap="">We have the OpenStreetmap database (whole world) installed in POSTGIS
already, took a few days to just run the index, anyway, it works, and
pretty darn quick, we're not POSTGIS gurus (yet) though, so I'm sure
there is more tuning to be had in the response times
</pre>
</blockquote>
<pre wrap=""><!---->
I believe the OSM data is based on tiger '06se data. I'm not sure how
they incorporated it in the end or how hard it would be to update to the
'07 format though.
</pre>
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Yes we were aware of this. The OpenStreetMap data is just a side
effort at the moment.<br>
<blockquote cite="mid:20080622123806.GZ31154@tamriel.snowman.net"
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<pre wrap=""><!---->
I'm curious if, overall, information was really lost. There are alot of
flags and whatnot and other places where the information could be that's
not what you're finding in the MTFCC.
</pre>
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<pre wrap="">2) When you compare Tiger to Google (Navteq or TeleAtlas) the later
have a major road classification that is not present in the Tiger
data. These roads are classified as CFCC=A4* in the old data.
Basically the missing classification in tiger would allow you to
identify the roads in light yellow on this google map:
</pre>
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<pre wrap=""><!---->
I had a similar issue with the *old* Tiger data, actually, but found
that they were federal highways and was able to pull the necessary
information from the federal highway administration shapefiles.
</pre>
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Seems like a painful thing to pass on the to end users of the data, at
least if you intend for it to be used by anyone.<br>
<blockquote cite="mid:20080622123806.GZ31154@tamriel.snowman.net"
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<pre wrap="">Yup, this was the first think that I had a problem with. BTW, I think
Google is using and Average Daily Traffic(ADT) for their map themesand
not strictly a classification system. My suspicion was raised when I
noticed some local streets not theming correctly when compared to
Google. I have no way of know for sure though.
</pre>
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<pre wrap=""><!---->
That's an interesting idea.
</pre>
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<pre wrap="">Do you know of any ADT datasets? I can't figure out how google would
be able to get this type of info, so that's why it's just a suspicion
right now.
</pre>
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<pre wrap=""><!---->
It could be a dataset that google's picked up from their commercial
providers...
</pre>
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It would be a heck of a lot of work to do though, becase this type of
information is generally handled at the municipal level, although, they
could only be applying it in the populated areas.<br>
<blockquote cite="mid:20080622123806.GZ31154@tamriel.snowman.net"
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<pre wrap="">I need to come up with a dataset that will extend the coverage area
beyond our local dataset for centerline prorated geocoding purposes.
</pre>
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<pre wrap="">So what are you using for a geocoding engine?
</pre>
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<pre wrap="">Some recent extensions to PAGC were developed here under a MetroGIS
contract. The Engine seems very fast. we're in the testing stages now
with the first extended version. I believe it will be going public on
the PAGC list fairly soon.
</pre>
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<pre wrap=""><!---->
Sounds interesting. Public being open source in some way? I've never
looked at PAGC, honestly..
</pre>
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Yes, that was a stipulation of the contract and something that was
actively pursued. I was on the project team.<br>
<br>
bobb<br>
<blockquote cite="mid:20080622123806.GZ31154@tamriel.snowman.net"
type="cite">
<pre wrap="">
Thanks,
Stephen
</pre>
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