Subject: Re: Can a point also be a border?<br/>
Date: Apr 21, 2002 @ 19:58<br/>
Author: acroorca2002 (&quot;acroorca2002&quot; &lt;orc@...&gt;)<br/>
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<div id="ygrps-yiv-1645163104">--- In BoundaryPoint@y..., &quot;granthutchison&quot; &lt;granthutchison@b...&gt; <br/>
wrote:<br/>
<blockquote><span title="ireply"> &gt; If you&#39;re making a border tour, you march along a boundary segment <br/>
&gt; until you come to a polypoint, and then you can choose a *new* <br/>
&gt; boundary segment to follow, from the 2 or more on offer at that <br/>
&gt; point. So the lines don&#39;t cross the polypoints <br/>
<br/>
 </span></blockquote>grant <br/>
you are just lucky your survey is of the world class level only<br/>
where you can get away with this reductio because all 4 of the <br/>
international border crosses apparent chance to really be <br/>
singularities<br/>
so it is a relatively simple matter for you to skirt each of the <br/>
problem points in this way<br/>
even as you create that new accounting problem you mentioned<br/>
<br/>
but if you were rationalizing some place like palm springs or the <br/>
salton sea rezzies in this way<br/>
where the apparent border cross singluarities actually come by the <br/>
dozens & scores in continuous grids <br/>
you would quickly get stuck retracing your own route<br/>
& couldnt even complete your tour & accounting<br/>
<br/>
so i have to wonder<br/>
do even gridworks of apparent border crosses also somehow not really <br/>
cross as you say<br/>
<br/>
m</div>