[OSM-newbies] Rendered two ways; why?

[Richard Weait]

On Mon, Jun 14, 2010 at 12:45 PM, Isaac Wingfield <isw at witzend.com> wrote:
>
> On Jun 13, 2010, at 9:23 PM, newbies-request at openstreetmap.org wrote:
>
>> The church property perimeter is tagged on the map, and the parking
>> area described is fully contained within that property. Why would one
>> assume that a parking area contained within the church property to be
>> a public parking space?
>
> Because there are scales at which you can see the big blue "P" on a
> rectangular shaded area, but no "place_of_worship" icon is rendered;
> very confusing. (Mapnik, fourth scale down from the top).

>From my mapnik rules[1]:
place_of_worship polygons are rendered up to scale 1:750,000
place_of_worship points are rendered up to scale 1:12,500

parking polygons are rendered up to scale 1:750,000
parking points are rendered up to scale 1:25,000

[1] these might not be identical to the current rules on OSM but are
illustrative.



Just had a closer look (and tidied up some TIGER while I was there.
Don't get tunnel vision on these two buildings.  There is a lot to do
in your neighborhood.  ;-)



Existing:
surrounding area tagged amenity=place_of_worship
node tagged amenity=place_of_worship, with name=, etc. as well.
area tagged amenity=parking, access=destination
building(s) tagged building=yes

What I usually do for similar places:
Draw the building and tag as building=yes, address details,
amenity=place_of_worship, name=, etc...
Draw the parking area tagged as amenity=parking, (I presume access=private)
Draw the driveway(s) connecting to the city streets, tagged as
highway=service, service=driveway

Things that surprised me a bit:

1) The whole area defined as amenity=place_of_worship, then a node as
amenity=place_of_worship, with name and other details.

If I do a quick count of places of worship for your area, I would
double-count those tagged with both a node and a way.  Now, shame on
me for doing a naive count of nodes plus ways, but perhaps they are
better as either a node or an area but not both.

2) No address data?

Typically, I would put the amenity, address, name and other details on
the building.

3) Parking lots shown but no driveways to connect the local roads.  .