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

[Christoph Jung]

Thank you very much for your answer. I totally forgot projections with degrees, sorry ^^ than geodesic math will be the more general approach. 

Sincerely,
Christoph 

> Am 09.10.2019 um 16:33 schrieb C Hamilton <adenaculture at gmail.com>:
> 
> 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,
> 
> Calvin
> 
>> 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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