This Webinar, put on by Blue Marble, is an excellent overview of Map Projections. Don't be afraid of its length -- (2:09:53) -- it moves along quickly and is never boring. The question-and-answer part starts at about 1 hour and 20 minutes, so watch it to at least that point.
https://www.youtube.com/watch?v=kPVdv8PTeS4&feature=youtu.be
Dave
Dave Stoll
Las Vegas, Nevada
A GIS program http://www.bluemarblegeo.com/products/global-mapper.php
Allen Jessup
Engineering Specialist / CAD Manager
It's more than that. It'll import just about any format you can think of, and let you convert it into anything else. It can create ridiculously large surfaces, and style them with hill shading, contours, elevation bands, etc. It will display dwg files, survey data, GPS files, you name it.
Steve
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