[Imports] Slovenia landcover import RABA-KGZ review

[colored stone]

Well, according to
http://wiki.openstreetmap.org/wiki/Tag:natural%3Dgrassland
natural=grassland doesn’t fit to these elements – these areas are mostly
covered by scrubs or small trees and not just some kind of grass.
Landuse=forest is closer but I think wouldn’t be correct. I am practising
both tags and I agree it is sometime difficult to distinguish between
landuse=forest and natural=scrub.



Martin

On 23 November 2015 at 10:59, Christoph Hormann <chris_hormann at gmx.de>
wrote:

> On Monday 23 November 2015, colored stone wrote:
> > I think this isn’t really an error. This estimation based on analyses
> > of existing elements raba:id=1410 (currently classified as
> > natural=heath) – the question was – “how would OSM mapper classify
> > this element according to the satellite image”. More than 80% of this
> > elements would be classified as natural:scrub, some of them as
> > landuse=forest (sometimes it is very difficult to distinguish scrub
> > from forest), very few as landuse=meadow (1410 are former
> > agricultural areas now overgrowth).
>
> Actually the most likely alternative tagging would be natural=grassland,
> that is in case of areas not dominated by woody vegetation, like ferns
> or other herbaceous perennial plants, without active human
> maintainence - the OSM tagging scheme is fairly insufficient here and
> abuse of natural=scrub for grassland with scattered trees is very
> common.
>
> In general clearly identifying scrub from imagery, even high resolution,
> is rarely possible.  So you ultimately you need ground knowledge to
> properly map this.  It is up to the local community to decide if they
> prefer to map based on local surveying on a clean slate or if they want
> to do this building upon a less precide mapping imported.
>
> --
> Christoph Hormann
> http://www.imagico.de/
>
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