<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Unfortunately I sent this directly to Jochen instead of the list - Applogies for that.<div><br><div><div>On 8/03/2013, at 9:29 PM, Jochen Topf <<a href="mailto:jochen@remote.org">jochen@remote.org</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">On Wed, Mar 06, 2013 at 07:15:10AM +1300, Glen Barnes wrote:<br><blockquote type="cite"><blockquote type="cite">One important difference from the current tagging is that we propose to tag<br>the "calving line" instead of the "grounding line" as natural=coastline. This<br>makes a lot of sense, because for most purposes the "water" side of the new<br>coastline allows typical water use (such as moving about on a ship) while the<br>"land" side of the new coastline allows typical land use (such as building<br>a settlement). This change in tagging will affect all OSM map of Antarctica<br>right away. After the import we have the data available to add specific<br>rendering for shelf-ice allowing a much improved OSM map.<br></blockquote><br>This concerns me a little bit. What happens if someone wants to create a map of the world and uses the coastline data to generate the continents? Won't Antarctica be incorrect? I'm not sure I see the point in tagging something that is not a coastline as a coastline. Why not just tag it as what it is?<br></blockquote><br>There is no such thing as "the coastline". There are many "lines" that can<br>be seen as coastlines. Generally in OSM the mean high water line is used.<br>Our "interpretation" is actually consistent with that in a way.<br><br>Christoph and I have debated this for a long time. See the current state<br>of the discussion here:<br><a href="http://wiki.openstreetmap.org/wiki/Antarctica/Tagging">http://wiki.openstreetmap.org/wiki/Antarctica/Tagging</a><br><br>If you have any arguments against this, please add them to the wiki page<br>or discuss them on the Imports list.<br><br>Jochen<br>-- <br>Jochen Topf jochen@remote.org http://www.remote.org/jochen/ +49-721-388298<br></blockquote></div><br></div><div>I'm trying to get a better handle on how this works in practice vs. other maps of Antarctica. If we look at a satellite view and map view from Google maps the coastline seems to be the grounding line although I may be mistaken. Are you saying we make this whole 'bay' disappear by tagging the coasting line as the edge of the ice as opposed to where grounding line? I propose tagging the coastline as the grounding line and the ice shelf as an ice shelf. In that way you are describing what the real world is rather than a perceived value. </div><div><br></div><div>Glen</div><div><br></div><div><img height="468" width="1246" apple-width="yes" apple-height="yes" id="ed141115-6adc-4071-be46-102adb749a92" src="cid:545BA775-7FD8-4C2D-9123-1401DEEBEC2F@domain_not_set.invalid"></div><div><br></div><div><br></div></body></html>