[Talk-us] Boston Coastline leak? Re: Where next?

Christopher Schmidt crschmidt at metacarta.com
Mon Feb 2 17:36:09 GMT 2009

On Mon, Feb 02, 2009 at 05:12:01PM +0000, Peter Miller wrote:
> On 31 Jan 2009, at 17:56, Bill Ricker wrote:
> >On Fri, Jan 30, 2009 at 10:01 PM, Bill Ricker <bill.n1vux at gmail.com>  
> >wrote:
> >>On Fri, Jan 30, 2009 at 9:47 AM, Christopher Schmidt
> >><crschmidt at metacarta.com> wrote:
> >>>just assumed it was a renderer problem instead of a data problem.
> >>
> >>looks like it's both ?-)
> >>
> >>can you or someone figure out what the fix is?
> >
> >seems to me that freshwater on the inland side of a dam with locks
> >should not be natural=coastline, so i am adding waterway=dam,lock=yes
> >to the Amelia Earhart Dam and converting the offending coastline
> >polygons to waterway=riverbank. this may not fix watever the intrinsic
> >problem is -     polygons seem rightway round, clockwise wet. I am
> >unclear on how adjacent wet polygons should touch, maybe i should ask
> >that on Newbies :-)
> I have done some work on the coastline and rivers in and around Boston  
> and I think the coastline should be clear now. This should be  
> confirmed by tomorrows update of Coastline viewer and hopefully the  
> mapnik update thus week will be ok.
> The bay in Boston is still not rendering properly yet. I am not sure  
> why yet but will keep plugging away it at.
> There is some more 'grooming' needed of the coastline to get it to  
> follow reality a bit better, I have done the main bits but I am  
> probably done with that now.
> Some of the rivers could also do with 'grooming' to get their edges to  
> match reality a bit better and some rivers still seem to  be missing  
> entirely, however, again I have done what I am going to do.

Most of the water in the state doesn't exist. It is my plan before the
Feb 14th mapping party -- and hopefully before the Mapnik update that
week -- to get the National Hydrography basins that cover MA uploaded, 
so that that is resolved.

Christopher Schmidt

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