Questions tagged [visibility]
in this context visibility is intended to mean whether a real world object is visible from a point or location on a map. It is not intended to mean whether a map layer is visible when another map object is drawn on top of it.
126 questions
2 votes
0 answers
42 views
QGIS - understanding intervisibility network analysis - Viewshed PlugIn
Do I understand correctly, that when setting viewpoints in the viewshed analysis plugin to the same values in terms of targetheight and oserverheight per point, the calculated results based on a DSM ...
- 631
2 votes
1 answer
210 views
QGIS Processing script causes intermittent crashes, visual gaps in layer tree, and delayed layer visibility
I have a QGIS project with multiple polygon layers organized inside a group. Using my Processing script, I select that group by name and then copy certain layers from it into a newly created group. ...
- 83
0 votes
0 answers
79 views
Using viewshed to determine how much of wind turbine can be seen in ArcMap
I would like to know how much I can still see of a wind turbine 10 km (point shapefile) away from my observer point (point shapefile). The viewshed analysis only tells me whether I can see the wind ...
- 23
3 votes
1 answer
101 views
Getting signal on layer scale based visibility changed in PyQGIS
Is it possible, to get a signal, when something (user or script) changes layer scale visibility? I tried layer.configChanged.connect(self.test_2) layer.flagsChanged.connect(self.test_2) layer....
- 309
0 votes
0 answers
53 views
Log Execution Failed Viewshed (line 266,351,888,163)
I found difficulties when doing viewsheed and network intervisibility. The steps I have taken are: Download DEM from opentopograhy SRTM 30 Wrap projection DEM rasterized to UTM 84 The collection of ...
- 1
2 votes
1 answer
879 views
Turning off layer visibility in ArcGIS Pro with Python
I have code that exports several maps. For a set of maps, I want to make sure one layer used in a previous map is turned off. I don't want to remove it completely. Anyone know what I am doing wrong? ...
- 35
2 votes
1 answer
285 views
QGIS Visibility Analysis > Viewshed: results appears not in all directions
I am trying to analyse the visibility of a particular tower of a castle from the surrounding area. I have a Digital Surface Model (not DTM) which includes the built form (and therefore as I understand ...
- 29
1 vote
1 answer
517 views
Visibility/viewshed analysis
I’m working on a viewshed analysis for an ADLS tower. Basically, I need to ensure that aircraft at various altitudes are visible to the tower. I have an ADLS tower with elevation and height values, ...
- 11
2 votes
1 answer
381 views
Displaying only labels of points that are visible in QGIS
I have a large point layer that I have symbology classified by att field "Property Type" then the property type field is further subclassed into "Class" (A, B, C for example). I ...
- 21
2 votes
0 answers
68 views
QGIS: Layer in layer tree list not visible
I have a new problem with QGIS 3.28.7 (OS Linux Mint 21.1): I'm looking for a layer in the layer tree list in a QGIS project, and use for that purpose the search box (left side below) - the result I ...
- 685
0 votes
0 answers
187 views
Conducting viewshed with building heights using ArcGIS Pro
I am seeking to conduct a viewshed (using ArcGIS visibility - spatial analyst) of from an observer point, which is a human standing on a hill. Once I have added the single input point, I have added 1....
- 19
1 vote
0 answers
80 views
Using Viewshed or Line of Sight
I am having a hard time working out whether I should use Viewshed or Line of Sight in ArcGIS Pro. Basically I have a single observer and I want to know whether a building in the far distance was ...
- 19
2 votes
0 answers
423 views
Algorithm for calculating line of sight [closed]
I've been working on implementing a Line of Sight calculation tool, but the results often appear incorrect. I am unable to use other libraries or tools to do the calculations, so please do not ...
- 129
1 vote
1 answer
252 views
Calculate visibility of single point
I am looking to identify where a single point in the landscape can be seen from everywhere else in the landscape. Specifically, I want to know from where a hypothetical 34m building can be seen from ...
- 351
5 votes
3 answers
1k views
Changing polygon color depending on visibility of background map in QGIS
I have a map with borders and different "background maps", e.g. OpenStreetMap and Google Satellite. When the Google Satellite Map is in the background, the borders are the best visible in ...
- 631