[Qgis-user] Circular Lines in QGIS

Wolstan H M Dixie wolstan-dixie at hotmail.co.uk
Wed Sep 26 14:54:33 PDT 2018


I don't know but am guessing, but aren't those lines not just *any* circular arcs, but the actual great-circle paths (the shortest line between two points on the surface of a globe) plotted onto that map projection? Some of them towards the edges aren't circular.

On 26/09/2018 21:34, C Hamilton wrote:
I had a user request Circular Lines in the Shape Tools plugin and they gave the following example.

https://www.stayaspensnowmass.com/sites/default/files/aspenFlightMap.jpg

I don't know how one would do this type of drawing. Does anyone have any ideas? It draws the lines trying to avoid overlapping other lines in a very pleasing manner. Doing this is probably outside the scope of the Shape Tools plugin, but I just wanted to ask to see if there is a relatively easy algorithmic way of drawing these types of lines between two points.

Thanks,

Calvin




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