[Imports] Slovenia landcover import RABA-KGZ review

[Christoph Hormann]

On Sunday 22 November 2015, colored stone wrote:
>
> We have been looking to already imported data and we have generally
> agreed that existing tagging might be problematic. We have concluded
> that natural=scrub corresponds to raba:id=1410  much closely. Not
> really exact – but the estimation is than more than 80% of existing
> elements of raba:id=1410 could be classified as natural=scrub. We
> have concluded that these elements should be imported with tag
> natural=scrub.

All right - i cannot really comment on the validity of this assessment 
but it is plausible.

>
> Prior to importing new areas existing data imported will be improved:
>
> -       - Elements with raba:id=5000 and 6000 will be deleted
>
> - -    -  Elements with raba:id=1410 will be changed to natural=scrub
>
> We are intending to use JOSM with query operation (like:
> *user:the_one_who_import
> and “raba:id” =1410*) for each area (tile) already imported. If there
> is any better technique to perform such operation, please let us
> know.

What you can do is download all the elements with those tags, all their 
member ways and nodes  (using recursion down) and all ways/relations 
containing any of these (using recursion up) with the Overpass API and 
then delete the matching elements in JOSM.  Editing based on partial 
downloads with Overpass is somewhat tricky however so you should make 
sure you know what you are doing.

In any case you should make sure you do not delete things that have been 
manually modified in the meantime, which is best done by checking if 
elements are still version 1.

-- 
Christoph Hormann
http://www.imagico.de/