When creating geodesic circles in ArcGIS 10, is there a reason why buffering from Point features results in a true geodesic representation, however buffering from a Polyline does not?
I have been using the 'Buffer' geoprocessing tool only. I noticed when buffering from a polyline, it did not appear to produce a true geodesic buffer. When I used the 'Feature Vertice to Points' tool to convert the same polyline into points, I then conducted another buffer using the same 'buffer' tool. This time it yielded a more accurate geodesic buffer.
Why is this so? Is it an algorithm problem?