<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<div>I agree, coastlines should not be merged with political boundaries. In this case the political boundaries are based on the coastline in nineteen-hundred whatever, pre-GPS. Coastline in OSM should refer to where the coast actually is and political boundaries should not move.<br></div><div dir="auto"><br></div><div dir="auto">Also, I see the Marble Hill boundary is wrong. The Manhattan-Bronx boundary should run in the bottom of the hill (former path of the river) and through several buildings.<br></div><div dir="auto"><br></div><div dir="auto">Maybe the tax map data is of some help?<br></div><div dir="auto"><a href="https://data.cityofnewyork.us/Housing-Development/Department-of-Finance-Digital-Tax-Map/smk3-tmxj">https://data.cityofnewyork.us/Housing-Development/Department-of-Finance-Digital-Tax-Map/smk3-tmxj</a><br><br>Taking a second look... the data there also has problems. Some water areas belong to two lots in two different boroughs.<br></div><div dir="auto"><br></div><div dir="auto">I'm not convinced New York City even knows its exact borough boundaries. (Just look at Ellis Island: New York City's tax lot extends over portions of New Jersey's part of the island and waters. Other Hudson River lots also spill into the NJ side of the river)<br></div><div dir="auto"><br></div><div dir="auto">Good luck.<br></div><div><br></div><div>-- <br></div><div><br></div><div><br></div><div>May 24, 2022, 17:16 by kevin.b.kenny@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="ltr"><div dir="ltr"><br></div><div><br></div><div class=""><div dir="ltr" class="">On Tue, May 24, 2022 at 11:43 AM Marcel Dejean <<a target="_blank" rel="noopener noreferrer" href="mailto:mrd79@case.edu">mrd79@case.edu</a>> wrote:<br></div><blockquote class="" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">The Manhattan borough boundary is from the same import that had the neighborhood boundaries which I deleted a year or so ago. It ought to be deleted and the county boundary reused. I'm not sure about the other boroughs, but it sounds like they're just as bad.<br></div></blockquote><div><br></div><div>They are indeed just as bad. (Uhm, Queens is worse- the imported boundary excludes some inhabited areas of the borough.)<br></div><div><div><div><br></div><div>The same import also has some weird boundaries labeled "territorial waters" that don't close, don't align to baseline, coastline, 3-geographic-mile limit, or 12-nautical-mile limit. I'm going to delete them as well, at least in the areas where they're glued to political boundaries.<br></div></div><div><br></div></div><div>The neighborhood boundaries in Queens are well defined - all the locals know where Corona ends and Flushing begins - so I wouldn't object if someone wants to maintain them. They were political boundaries until 1898, and things like 'postal cities' mostly still follow them. But I'm not likely to do it.<br></div><div><br></div><div>I might redo the community board boundaries from NYC GIS, but it's not a high priority for me. I got started on this because the Adirondacks and the Niagara Frontier had no political boundaries at all in OSM. When I got to where there were political boundaries, I saw they were all misaligned, sometimes by a km or more. It's turned into a project of redrawing all 1600 municipalities (which, of course, incidentally redraws alletim because I find imported misinformation everywhere I look. <br></div><div><br></div><div>Thanks for the confirmation that the imported junk is indeed junk. I'll tidy it up in the places where I'm working.<br></div><div><br></div><div>As I move down into Queens and LI, I can supplement the work with strong local knowledge - I was born in Far Rockaway.<br></div></div><div>-- <br></div><div dir="ltr" class="">73 de ke9tv/2, Kevin<br></div></div></blockquote><div dir="auto"><br></div> </body>
</html>