Am 04.09.2014 22:09, schrieb Friedrich Volkmann:
On 04.09.2014 21:19, Zecke wrote:
Spoil heaps can be mapped as unclosed lines when they
are attached to a (natural) mountain. Then only the visible part of the
contour will be mapped as a line
This does not sound right. Spoil heaps are areas and should be mapped as
such, or abstracted to a node when you don't know the dimensions.
Spoil heaps (positive landform) are the complement of quarries (negative
landform). I have never seen a quarry mapped as a line.
I'm mainly dealing with historic mining. Spoil heaps of historic mining
however are very real. And they often developed directly in front of an
adit at the base or slope of a mountain. I've seen a lot of them and
because of their origination history they are at the flank of a mountain.
Mapping of historic spoil heaps is at its beginning that is why I
started this discussion. And I would say70% of them I would map as a
line, 30% as an area because its surroundings are clear. But even for
the area type I would need a way to map the slope as not every spoil
heap has steep slopes. Discussion was about started slopes, not about
spoil heaps.
Zecke
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