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

Ian Dees ian.dees at gmail.com
Mon Feb 2 17:41:37 GMT 2009


On Mon, Feb 2, 2009 at 11:36 AM, Christopher Schmidt <
crschmidt at metacarta.com> wrote:

> 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.


Chris, can you post an update on what NHD data rules you are using to conver
to OSM? Also, how did you download the shapefiles? Via the NHD website or
did you talk to them directly?
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