<div dir="ltr"><div><div><div><div><div>Hi<br></div>You're not specifying an ellipsoid in the command line. Your PROJ version is using WGS84 by default.<br></div>The default ellipsoid of the PROJ version used in the example of the PDF document was Clarke 66.<br></div>You get those results with:<br>proj +proj=poly +ellps=clrk66 -r<br><br></div>Regards<br><br></div>José Gonçalves<br><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">2016-05-09 23:41 GMT+01:00 Dean Schulze <span dir="ltr"><<a href="mailto:dschulze@wirelessseismic.com" target="_blank">dschulze@wirelessseismic.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
I ran the cities example using the inputs on pg. 4 of the docs at <a href="ftp://ftp.remotesensing.org/proj/OF90-284.pdf" rel="noreferrer" target="_blank">ftp://ftp.remotesensing.org/proj/OF90-284.pdf</a>, but I got different results than shown. Here are the results I got:<br>
<br>
$ proj +proj=poly -r cities.lat.lon.txt<br>
# coordinates for a few cities<br>
-4887445.45 7318110.56 Boston, United States<br>
-5542376.59 6982834.25 New York, United States<br>
171219.46 5415571.82 Paris, France<br>
485343.33 5730932.66’w London, England<br>
<br>
<br>
The document linked above shows this:<br>
<br>
$ proj +proj=poly -r cities<br>
# coordinates for a few cities<br>
-4887590.49 7317961.48 Boston, United States<br>
-5542524.55 6982689.05 New York, United States<br>
171224.94 5415352.81 Paris, France<br>
-8101.66 5707500.23 London, England<br>
<br>
<br>
Am I doing something wrong, or did something change from when the document was written?<br>
<br>
Thanks.<br>
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</blockquote></div><br></div>