[Talk-us] Imports (by nmixter in Fresno and elsewhere)

2015-01-09 Thread Frederik Ramm
Dear Nathan,

   I've accidentally come across some of your imports in the Fresno area
and found that they had many problems - just the usual import stuff
really, over-noding, mapping individual building plots as residential
areas, over-tagging, landuse areas matching neither the aerial imagery
nor the existing road grid which would have been avoided by the
suggested manual inspection, and so on.

This is just a random example - the whole area looks like this:
http://www.openstreetmap.org/#map=16/36.7379/-120.1027

I really wonder how anyone, ever, will want to make edits in places
mapped like this - I think you have had similar feedback for other
things you've done over the past (California FMMP residential discussion
 others). In an older Email you wrote of your work that California is
no longer a barren wilderness but has blossomed into a flower full of
color and life - frankly what jumps at me from these map pages is
certainly not life! But I know that I'm probably on an extreme side of
the spectrum here and there will be others who like that kind of colour
map, and hence I don't want to discuss how these existing imports can be
fixed or whether they should be removed altogether - that's for another
time maybe.

But I would like to ask you to discuss every single future import that
you make *before* you make it, just like everyone else is expected to.
Just because you have done many imports in the past doesn't mean that
rules don't apply to you - and you don't show any signs of stopping.

So please, if you must continue to import data, at least do it using the
usual process.

Thank you
Frederik

-- 
Frederik Ramm  ##  eMail frede...@remote.org  ##  N49°00'09 E008°23'33

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Re: [Talk-us] Denver Area Relation Assistance

2015-01-09 Thread Toby Murray
I did a quick fix for the hole in the Denver, Denver County and Adams
county relations. I may take another look at the area tonight. I saw a few
oddities although I don't think they are related to your edit. I don't
think way 321010352 should have aeroway tags on it since it is a member of
a relation with those tags. There is also an odd multipolygon relation
(112849) in the area that I suspect is mostly a duplicate of the Aurora
boundary.

Toby

On Fri, Jan 9, 2015 at 10:55 AM, Jim McAndrew j...@loc8.us wrote:

 Kristen,

 If nobody else takes this on, I can look at it this weekend.

 --
 Jim

 On Thu, Jan 8, 2015 at 11:21 AM, Kam, Kristen krist...@telenav.com
 wrote:

 Good Morning OSMers,

 A Telenav data integrity check picked up geometry issues associated with
 the Denver International Airport Route relation. We found that the culprit
 was the following changesets:

 * http://www.openstreetmap.org/changeset/27705328
 * http://www.openstreetmap.org/changeset/27713462

 I contacted the user who said essentially said the changesets were
 committed accidentally and didn't know how to reverse them. In any case, I
 reverted the deletions by creating  _new_  OSM ways that are duplicates
 (tags  geometries) of the ways that were deleted.  The two ways are:

 *Denver International Airport (321010352, v1)
 *321010349, v1

 These new ways (321010352, 321010349) are duplicates of ways that were
 part of the following relations:

 *Adams County (1411346)
 *Denver County (1411339)
 *Denver (253750)
 *Denver International Airport (112192)

 I went ahead and added the new ways to the Denver International Airport
 relation member list. However, I am not very confident on reconstructing
 the other boundary relations' member lists.  That said, I am writing to ask
 if anyone can pitch in on fixing the other four relations. Thank you in
 advance!

 Best,

 Kristen
 ---
 Kristen Kam
 OSM Profile → http://www.openstreetmap.org/user/KristenK

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[Talk-us] Place classifications

2015-01-09 Thread Minh Nguyen
Recently I've been trying to improve the distribution of place=village 
versus place=town in my area. Originally municipalities were tagged 
based on their populations, resulting in clusters of place=cities in 
urban and suburban areas and a desert of place=hamlets everywhere else. 
And there's a lot of everywhere else in Ohio and Kentucky.


Generally speaking, I've been promoting the county seat and other 
significant municipalities in each county from place=village to 
place=town. The result is 1-2 place=towns in each rural county, a bit 
more along Interstates. It looks nice on the standard map, but more 
importantly, it accurately reflects what going to town means in the 
surrounding area. That seems to be the idea behind the wiki's nebulous 
definitions. [1]


Meanwhile, over in Indiana, one mapper has been turning virtually every 
place POI into place=town, even unincorporated places with nothing but a 
house or two. [2] I'm sure that's too extreme, and I just reached out to 
the mapper to say as much. But after browsing various parts of the U.S., 
I think we've all got different ideas of what a city, town, and village 
ought to be. Some metropolitan areas have lots of place=city POIs, while 
in other places 3-4 U.S. routes converge on a place=village.


I think we should reserve place=city for the focal point of each 
metropolitan area and distribute place=town more evenly across the 
landscape. Just as the highway tag summarizes disparate tags like 
surface, maxspeed, and lanes, the place tag holistically sums up 
admin_level, border_type, and population (and the admin_centre role for 
county seats). So for example, the Walden County seat (population 900) 
and a Bigopolis suburb of 15,000 should both be place=town.


Or has everyone settled on a different standard? Sometimes it's hard to 
tell whether the state of the map is due to a long-ago import to be 
fixed or a community consensus to be respected, and the wiki hedges too 
much to be helpful.


[1] http://wiki.osm.org/wiki/Key:place
[2] http://overpass-turbo.eu/s/6VW

--
m...@nguyen.cincinnati.oh.us


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Re: [Talk-us] CDP tagging

2015-01-09 Thread Richard Welty

On 1/9/15 2:32 AM, Minh Nguyen wrote:


Taginfo currently shows over 2,000 instances of boundary=census, both 
for CDPs and for statistical boundaries in other countries. [1]


I use boundary=census. If it weren't already in such wide use, I 
would've gone with the more generic-sounding boundary=statistical, but 
whatever. Another mapper in Ohio prefers to delete the boundary and 
admin_level tags but leave place=locality in place. [2] IMO the 
important thing is to remove the misleading administrative tags.



i wonder how many actual users of boundary=census there are.
if there are none, then it's a good time to consider changing it.

note that the US Census Bureau itself categorizes these as
statistical boundaries not census boundaries. arguably a
census boundary is one that they use when doing a census,
and includes both Legal boundaries and the additional
statistical boundaries.
The TIGERcnl import apparently only brought in CDPs, but the Census 
defines a whole hierarchy of areas, including metropolitan statistical 
areas (MSAs), census county divisions (CCDs), and census tracts. [3] 
If we ever attempted to map them, boundary=census and 
boundary=statistical would be equally ambiguous and a tag similar to 
admin_level would be required. However, there doesn't seem to have 
been much demand for including these other Census features in OSM. 
(For that matter, if TIGERcnl had left out CDPs, I would've preferred 
to seem them mapped as POIs at centroids rather than as areas. Even 
where the CDP name is widely used, the boundary is less clear-cut than 
a city limit.)

there are people who use these boundaries today out there, but
they are not expecting to get them from OSM and they probably
shouldn't be getting them from OSM. the statistical boundaries
are subject to change. there are substantial differences between
the CDPs from the 2008 import and the CDPs in TIGER2014.

i think CDP boundaries are very clear cut, but they morph
frequently, have no legal standing, and don't necessarily
correspond to what local residents think.

richard

--
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 Averill Park Networking - GIS  IT Consulting
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