[OSM-dev] Feasibility of an 'in the field' mobile editing app?
Nick Whitelegg
Nick.Whitelegg at solent.ac.uk
Sun Mar 9 11:05:51 GMT 2008
>Sounds nice, but there's one problem: creating OSM ways automatically
>from GPS data (without user editing) is not a good idea, for several
>reasons:
>- GPS (in)precission: it is a good practice to cover certain path
>several times before actually creating a way
Do many of us actually do that though? I have to admit I don't, as it
would simply take more time than I have available. In the countryside in
particular (which is what I was thinking of), one needn't be that bothered
about pixel-precision accuracy anyway. And in the town where I live, I
find the streets I've created generally match up well with the Yahoo!
imagery.
>- Depending on your GPS tracking settings, you could end up with a lot
>of unnecessary OSM nodes (while standing still, for example). This could
>be fixed by some data cleaning SW, I suppose, but it should be taken
>into account.
The idea was to use some sort of path simplification algorithm to avoid
this happening.
Nick
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