In Arcmap...I create a circle at a particular point in dd. Then I move to a specified radius (or even type it in).
The result is a circle where the points on its circumference are not exactly in the right place (and its not just an
offset due to mouse errors)...Example (all in dd):
pick center point -121.400648, 38.300225. Move out to radius of 0.21037. You get for NESW points on the circle:
N-S should equal .42074 but it is .353
E-W should equal .42015 but is .450
There might be some mouse errors, but this is way off. What projection issue have I missed? I'm pretty
sure the altitude doesn't vary more than 200' in this whole area.