[OSM-newbies] Strange rectangular blue areas

[topo at joelertola.com]

Thanks Jason.

  I am still slightly worried that I may have caused a problem. To add  
detail to the coast I deleted a whole section and redrew it. This  
seemed easer than adding points to an existing coast and then moving  
them. Later I seemed to have problems when I tried to delete more of  
the coastline.  This coastline viewer map does not show my edits over  
the last few days so I don't know if I accidentally left a hole in  
Manhattan.

If you join two line segments that share both endpoints to form a  
closed shape do both ends get joined? I was a little worried that only  
one end would be joined leaving an undetectable break in the shape.

-Joe


On Feb 10, 2008, at 10:13 PM, Jason Reid wrote:

> topo at joelertola.com wrote:
>> Hi all,
>>
>> I have been working mostly on Manhattan's West Side Highway. Adding
>> connecting details and oneway street directions. I also edited
>> Manhattan's coast line to add more detail.
>>
>> I thought I needed to wait until Wednesday to see the results of my
>> work. But I just found out that I can see what I have done in the
>> Osmarender base layer.
>>
>> I noticed something real bad when I looked. There are big rectangular
>> areas of blue covering a lot of land:
>> http://www.openstreetmap.org/?lat=40.7891&lon=-73.9939&zoom=12&layers=0BFT
>>
>> Is this a problem that I might have accidentally caused? Or is it  
>> some
>> Osmarendar rendering problem that has nothing to do with me? If I
>> caused this can I fix it?
>>
>> -Joe Lertola
>>
>>
> Typically that is the result of the coastline in that area not being
> fully connected yet, but it is fixable. The osmarender layer uses the
> actual coastline ways, so those will appear updated as soon as its  
> next
> rendered. If you look at
> http://tile.openstreetmap.nl/coastlines.html?lat=40.7891&lon=-73.9939&zoom=12
> it shows where the errors in the coast line are for that view of the
> map, in this case it looks like there are a few problems just east of
> North Arlington that need to be fixed (coastline has the rule of water
> on the right, which is the most common error along with breaks in the
> ways that delineate the coast).
>
> -Jason Reid
>
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