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A viewshed is an area that is visible from a specific location.

1 vote
1 answer
117 views

Query 200-300 viewshed rasters from a vector layer with z-values with QGIS

What I got: 200-300 invisibility depth viewshed rasters with information about how tall buildings can be without being visible from the viewshed points A vector layer with a planned building as a polygon … with z-value (building height) QGIS 2.18.12 What I want to do: Query all my viewshed rasters with the planned building vector layer to find out if the planned building intersects with any of the viewshed
johlund's user avatar
  • 637
1 vote
0 answers
20 views

Running Fishers (1996) 'Local Offset Viewshed' with ArcGIS Desktop?

Can ArcGIS Desktop run the Local offset viewshed as described by (Fisher, 1996) on page 1300-1301 below? … There's a similar operation called 'Invisibility depth' available through the plug-in 'Advanced viewshed analysis' for QGIS, but I'm looking for an alternative for comparison purposes. …
johlund's user avatar
  • 637
2 votes
1 answer
153 views

Difference between Local offset and invisibility depth viewsheds in QGIS?

Is there a difference between the Local offset viewshed as described by (Fisher, 1996) and the Invisibility depth viewshed available for QGIS created by Čučković (2016)? … Čučković, Z. (2016) Advanced viewshed analysis: a Quantum GIS plug-in for the analysis of visual landscapes. JOSS 1(4). http://joss.theoj.org/papers/10.21105/joss.00032 Fisher, Peter F. …
johlund's user avatar
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