Re: Marble map and clustering

Hi Tobias,

Thanks for the report - I guess I'll need to redo the clustering algorithm ;-)

Cheers,
  Johannes


Am Mittwoch, 26. Februar 2020, 13:40:49 CET schrieb Tobias Leupold:
> Hi all :-)
> 
> First of all thanks a lot for merging the Marble branch (which surely was no
> trivial task). I really think it's desireable to become independent of
> libkgeomap, and using Marble directly is certainly the way more
> future-proof choice.
> 
> Still, I think we have some fine-tuning to do, esp. with the clustering. To
> be honest, I don't really get which way Johannes implemented it (yet) ...
> so I bitch around here without being able to improve it ;-) Take it as
> constructive criticism for now ...
> 
> The clustering behaves a bit odd. Here's an example from my testing
> database:
> 
> https://imgur.com/a/yQ4AOLi
> 
> The first screenshot shows a quite widely north-south extended rectangle. If
> I zoom in one step, I get two square rectangles.
> 
> As you can see, they are both almost on the same latitude (Actually, the
> squares mark the photo's places close enough). So where does this
> north-south extension one step above come from? It's not only a bit, the
> rectangle is about 200 km tall, whereas the squares of the actual image
> locations are only about 20 km apart north-south ...
> 
> Also, the actual locations (Konradsreuth and Prague) are not even included
> in the first cluster, they are more distant east-west from the shown
> cluster as the cluster's width is ...
> 
> Surely, there's no rush doing the first marble-based release. But I really
> think we should improve the clustering beforehand!
> 
> Cheers, Tobias
> 
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