<div class="gmail_quote">On Thu, May 28, 2009 at 12:09 PM, maning sambale <span dir="ltr"><<a href="mailto:emmanuel.sambale@gmail.com">emmanuel.sambale@gmail.com</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">> Having the internal boundaries is actually a con. The boundary of Marikina<br>
> is its borders with other entities (like Pasig and Antipolo). The internal<br>
> "boundaries" are more properly boundaries of the barangays, not of Marikina<br>
> itself.<br>
</div>Not entirely, IMO<br>
A barangay (which I treat as a single polygon unit) is within a<br>
municipality (a collection of barangay polygons) which is within a<br>
province (a collection municipality polygons) with a few exceptions of<br>
course and so on and so forth.</blockquote><div><br>Ah, now I see where you're coming from.<br><br>I agree that the barangays of Marikina are part of Marikina and that Marikina is part of Metro Manila and so on. But we are talking about boundaries here (relation type=boundary), i.e., land area perimeters, not the land area itself. That's why I think that the internal borders shouldn't be counted.<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">
> In addition, because these internal boundaries are included in the relation,<br>
> they are being drawn as admin_level=6 (per the relation tag) in Mapnik,<br>
</div><br>This is a rendering problem.<br>
<div class="im"><br>
> though the presence of area=yes seems to mess things up.<br>
</div>I think I removed them in Marikina<br>
<br>
let's discuss this more.<br>
<br>
PS/OT:<br>
Incidentally, at work, I'm looking at using the NCSB codes for<br>
codifying provincial polygons. Does anybody use this at all?<br>
<font color="#888888"></font></blockquote></div><br>I think we can use the NSCB Philippine Standard Geographic Codes to refer to the various administrative units. Maybe as ref=* tags? We can also use the ISO 3166 codes for int_ref=*.<br>
<br>