On 3/20/2011 8:30 PM, Mike N wrote:
On 3/20/2011 8:18 PM, Ian Dees wrote:
There were several clients that did not attempt to connect the ways of
each NHD linestring so there are duplicated nodes and ways that touch
but aren't joined. Hopefully fixing this is what Paul was talking about.
Agreed - this is a safe case of duplicate node removal: when all
items touching duplicate nodes are of type hydro - river, stream,
lake, reservoir, etc (I forget the exact tag names).
Just combining segments within the same reach code will frequently
produce ways containing > 500 nodes, which makes editing more
complicated, and does not make any improvement to the usability of the
map data.
Having done some NHD imports I have experienced that sometimes the nodes
are very close but not duplicates. I usually merged any nodes that were
less than a few inches apart (can't remember the exact value) before
importing.
N.
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