US Highway data set?
Posted 09 February 2010 - 05:58 PM
Posted 09 February 2010 - 06:04 PM
If you need alot of time to download add it into your price. And you will need to do a quarry to separate the road data.
"There is much beauty that we fail to see through our own eyes teeming with life forms that give us that perception of our reality. Leaves on the trees blowing gently in the wind, or scarily, the waves pounding through high surf, or lightly on a warm summer’s day; that opportunity to sit or swim in the water on a white beach. That comfort to shout, “The universal conscious do you hear me? I am alive, guide me dear logos towards the path of rightnesses.” Earned what has been kept, no longer to be absorbed into a life filled with cold damn winds and that stubborn fog clouding my vision with nothing but darkness."
Posted 09 February 2010 - 07:54 PM
Posted 09 February 2010 - 08:39 PM
Posted 09 February 2010 - 09:01 PM
Posted 09 February 2010 - 09:35 PM
I've been working with the National Highway Planning Network data. It seems to line up with all my other stuff really well.
I'd love to hear about some of the pros and cons of the aforementioned data sets from someone more experienced than me.
For me it all depends on scale. I don't like the census data or from what I read about this data b/c it is produced by digitizing 1:100000 scale maps. Too coarse for me, but the scales that I work in are mostly local and occasionally regional. I like to use 1:24000 (25000) data and dumb/simplify it down in Illy. That way I have simplified data with beautiful curves that is still georeferenced well.
my two cents,
Posted 10 February 2010 - 08:40 AM
I don't like the census data or from what I read about this data b/c it is produced by digitizing 1:100000 scale maps. Too coarse for me, but the scales that I work in are mostly local and occasionally regional.
It varies. Current (2009) TIGER data in urban areas is built at 1:10,000 and has some lovely curves to it. Surprise!
OTOH, there's still some of the 1:100,000 data out in rural areas.
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