<div class="gmail_quote">On Wed, Aug 19, 2009 at 9:50 PM, Frederik Ramm <span dir="ltr"><<a href="mailto:frederik@remote.org">frederik@remote.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">> But I think we<br>
> need some sort of "find duplicate nodes, and if they match </div></blockquote><div><br>that was I believe the intention.<br> <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">> properties,<br>
> or just have different massgis import dates, merge them" bot. <br></div></blockquote><div><br>or even same date but different time stamp. This duplication is intrinsic to the MassGIS format that was imported - each town was a separate dataset.<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">There are roughly 7.1 million nodes in Massachussetts, and 270k of them<br>
share the same location as another node. This is just an analysis based<br>
on location, not on tags, but it can be assumed that most of those 270k<br>
nodes are not intentionally duplicate.</blockquote><div><br>they are intentionally duplicate in massGIS and uslessly duplicate in OSM afaik from what Chris has said of the import. <br> <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
It is possible that there are<br>
duplicate ways as well.</blockquote><div><br>not afaik. the vast majority are town border exact matches and probably some at on ramps.<br> <br><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote">
> This is
> beyond my clue level presently.</blockquote><div> </div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> But it is not a big problem, it is something<br>
that could be fixed in a day.<br>
</blockquote></div><br>I thought Chris had the beginings of a script that would do this.<br><br>It is possible that if Lars, Shankar and I spent some tuits looking at Frederik's script we could mutate it to do this. It would be a nice example for the Boston.PM presentation next month. I think he said it was uploaded to a git host or somewhere?<br>
<br clear="all"><br>-- <br>Bill<br><a href="mailto:n1vux@arrl.net">n1vux@arrl.net</a> <a href="mailto:bill.n1vux@gmail.com">bill.n1vux@gmail.com</a><br>