On Lunes, 22 de Agosto de 2011 15:49:27 andrzej zaborowski escribió:
> > Using the layers panel to flick between datasets. Visual compare. look
> > for overlapping areas for road.
> 
> I prefer using the mapnik tiles (Imagery menu) as a background for
> finding the duplicates, makes it easier to see which data is the new
> and which is existing OSM data because of the different style.
> Obviosuly some features are not on mapnik so it needs and additional
> check later.

OK, so I got a near-perfect way of visually detecting duplicates.

First off, add a filter like "untagged type:node". You only need to do this 
once.

Activate downloaded layer. Make sure all nodes are visible (filter off).
Activate imported layer.
Activate the filter, and *H*ide the nodes (two first checkboxes of the filter 
checked).

Now, you should be able to see the coloured ways of the imported data, *and* 
the grey nodes of the downloaded data. Neat. :-)


And, remember: JOSM validator is your friend. Specially when it comes to fixing 
those "duplicated nodes on non-closed ways" (double click on warning, "3", 
"M", rinse, repeat).


Best,
-- 
----------------------------------
Iván Sánchez Ortega <[email protected]> <[email protected]>

http://ivan.sanchezortega.es
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