Subject: Re: [BoundaryPoint] Tp BeDeLu - reply to Michael<br/>
Date: Aug 09, 2000 @ 17:53<br/>
Author: michael donner (michael donner &lt;m@...&gt;)<br/>
<a href="332.htm">Prev</a>&nbsp;&nbsp;&nbsp;&nbsp;Post in Topic&nbsp;&nbsp;&nbsp;&nbsp;Next&emsp;[<a href="topic330.htm">All</a> Posts]<br/>
<a href="332.htm">Prev</a>&nbsp;&nbsp;&nbsp;&nbsp;Post in Time&nbsp;&nbsp;&nbsp;&nbsp;<a href="334.htm">Next</a><br/>
<br/><br/>
<div id="ygrps-yiv-1754809119"><blockquote><span title="ireply">&gt;The normal positional accuracy of topographic maps is often considered to<br/>
&gt;be about 0.5 mm (1/50 inch), and so a 1:25,000 scale map can show<br/>
&gt;positions only to within about 12.5 m. So, a 3 m long line would appear as<br/>
&gt;a point.  A 3 m wide stream if plotted to true scale on a 1:25,000 scale<br/>
&gt;map would appear only 0.12 mm wide, too narrow to draw and still see it.<br/>
&gt;Cartographers exaggerate the widths of linear features in order that they<br/>
&gt;can be seen, or delete them completely.<br/>
&gt;<br/>
&gt;I&#39;ll certainly have to go to this place next time I&#39;m in the neighborhood!<br/>
&gt;<br/>
&gt;David<br/>
<br/>
 </span></blockquote>indeed<br/>
that illuminates & enhances<br/>
<br/>
no more than 1 point on any normal map<br/>
to represent this 1  &or perhaps these 2 & 3 points  on the earth<br/>
<br/>
indeed these 1 & 2 & 3 make 6  in 1<br/>
<br/>
so we have the mark of david on it too<br/>
<br/>
m</div>