[Talk-us] Parking lot not rendering

[Val Kartchner]

On Sat, 2011-02-12 at 13:28 -0500, Nathan Edgars II wrote:
> On 2/12/2011 12:47 PM, Val Kartchner wrote:
> > I'm having a problem with the Mapnik rendering of this area:
> > "http://www.openstreetmap.org/?lat=41.176495&lon=-111.948208&zoom=18".
> > In the retail area northwest of 48th Street and Harrison Blvd (UT-203) I
> > have entered parking lots.  However, they are not rendering.  The
> > commercial area just north of that is part of the same parking lot but
> > it is being rendered.  What is wrong with the retail area?
> 
> It's because the parking lot crosses a landuse boundary. Mapnik, in my 
> experience, tries to find which of two objects is inside the other and 
> renders them with the smaller one on top. But if they cross results are 
> suboptimal.
> 
> Aerials indicate that the commercial parking lot is not connected to the 
> retail parking, so it should be a separate polygon, even putting aside 
> this complication.

That was it.  I split the parking lot at the boundary of the land use,
and it now renders correctly.  I'll have to keep this in mind when I'm
drawing parking.

I figured that since there was very little separation between parking
lots that it should be done as one big one.

- Val -