<div>Hi,</div><div> </div><div>The ST_SimplifyPreserveTopology worked great! I will upload new data tomorrow. </div><div> </div><div>Thanks</div><div>Jason.<br><br></div><div class="gmail_quote">On Thu, Dec 13, 2012 at 9:18 PM, andrzej zaborowski <span dir="ltr"><<a href="mailto:balrogg@gmail.com" target="_blank">balrogg@gmail.com</a>></span> wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote">Hi,<br>
<div class="im"><br>
On 14 December 2012 02:12, Jason Remillard <<a href="mailto:remillard.jason@gmail.com">remillard.jason@gmail.com</a>> wrote:<br>
> In my town, there are 5427 buildings. 43,628 nodes, or 8 nodes per<br>
> structure. I did a 0.25 meter simplify on the entire town, and the node<br>
> count went down to 41,809. We are looking at an excess of 5%. 0.25 meter may<br>
> seem tight, but consider that source data was from 30cm and 15cm per pixel,<br>
> and I am sure the algorithms used do some kind of sub pixel interpolation.<br>
> Until I can figure out how to do the simplification from my scripts,<br>
</div>> ..<br>
<br>
As I understand some processing is done in PostGIS already. You could<br>
add a ST_SimplifyPreserveTopology(the_geom, 0.25) at the end of the<br>
process and it should have the same effect.<br>
<br>
Cheers<br>
</blockquote></div><br>