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 <adenacult...@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...@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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