Once again, Paul: nice overlay! It is very impressive what can be
whipped up (and rather quickly!) with OSM data and clever use of
tools. Such visualizations give the OSM community an excellent
method to identify, prioritize and potentially assign/do fixups in
our data. I encourage others to look at Paul's overlay and make
suggestions, especially if you are local to or map in one of the
areas with red lines representing road name abbreviations.
Looking at San Diego, I see fewer than a dozen red roads, most around
the Marine Corps base, but not bad at all. Yes, it seems worst in
"the east" (ern USA) in clusters, though there are problems in the
west, like Las Vegas, SW of Eugene, Oregon, around Denver and other
parts of Colorado, and NE Wyoming (?!).
I realize that this is a quick(er) solution and that more thought
might need to go into any bot's logic that identifies problematic
street names, but this overlay/visualization is a great initial
result and should be pursued further. Thanks for everybody's efforts!
SteveA
California
On 7/30/2014 6:18 PM, Serge Wroclawski wrote:
Paul,
Yeah, I'm just trying to figure out where the problems are- not trying
to dig deeply into them yet- I'm looking for clusters of problems (ie
San Diego), or I heard about a problem in Michigan where someone
decided to revert a bunch of the bot-mode changesets because he didn't
like the way they rendered, so in this case, I'd just look for some
known contractions at the end. We may change that later, but that's
where I'd start.
A bit of PostgreSQL and CartoCSS later, and I have an overlay
showing all the abbreviated roads:
http://tile.paulnorman.ca/demo/abbreviated.html. This layer is *not*
live updated.
Strictly speaking, this is not road only, and may include other
features. It has names ending in rd, st, bvld, ave or av, with the
first letter lower-case or upper case and with or without a period
at the very end.
This is a total of about 69000 roads.
Most of the roads are in the eastern United States, with small
clusters around some cities in the West. Places outside the US with
noticable numbers of abbreviated roads include: Vancouver, BC;
Trinidat and Tobago; Philippines; Chennai, India.
Technical note: The layer is generating 500 errors for tiles with
nothing on them. This shouldn't impact its use.
From a Vancouver perspective, a lot of the abbreviated roads will
require a ground survey, because the rest of their name is
frequently wrong (e.g. three roads named 22 av instead of 22 Avenue,
22A Avenue and 22B Avenue).
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