[QGIS-Developer] [Qgis-user] Geodesic Line Simplification

C Hamilton adenaculture at gmail.com
Wed Oct 9 07:33:27 PDT 2019

Good question. Geodesic math will take more time to compute. If you are
using a local projection and the area of interest is small then it will be
faster using euclidean math, but if your projection is using degrees
(WGS84) or you are covering a large area then geodesic is a better choice.

Best wishes,


On Wed, Oct 9, 2019 at 6:46 AM Christoph Jung <jagodki.cj at gmail.com> wrote:

> Hi Calvin,
> Splitting the algorithms would be an improvement for using them in
> combination with other algorithms and/or plugins.
> One question:
> Does the calculations in geodesic math need more time than with eukledean
> math? The last months I had some questions about my plugin
> Offline-MapMatching and all had trajectories with a small bounding box,
> i.e. eukledean math would be enough for good results. The distance between
> following trajectory points are not so big. Why do you want to implement
> the geodesic math (oh, it is a second question ^^)?
> Sincerely,
> Christoph
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