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

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Determining which specific features are visible from observer points using ArcGIS 3D Analyst?

I am working on a wind farm proposal. I have the positions of 70 proposed turbines. I also have the positions of 80 houses within 20km of the proposed turbines. I created a viewshed for the 70 ...
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Performing Viewshed Analysis for Transmission Line returns general error 999999?

I have a scenario where a transmission line is designed and placed with heights for each structure. With that being said, it is to be proposed to the forest service who is more concerned with how ...
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95 views

Viewshed plugin in QGIS doesnt work

I loaded DEM and Point data and as a result i just got black raster (still black after calculation). If I click intervisibility I cant see it like if line data is not there. I tried changing meters, ...
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116 views

arcGIS observer point analysis: Exceeding maximum allowed points amount not exceeded

I need to make an observer points analysis (3D analyst tool). I have a shapefile of 22 points, so I divided it in 2 layers of 11 each as the maximum points allowed is 16. However, as I launch the ...
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84 views

RuntimeError from r.viewshed in graphic modeler

after using r.los in QGIS want to switch to r.viewshed in GRASS GIS 7. i need to do a lot of viewshed analysis form given points of a vectorlayer. if i try to add r.viewshed to the graphic modeler i ...
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712 views

viewshed analysis QGIS

I'm trying to make a viewshed complemented Quamtun viewshed analysis in GIS, someone managed to do it? in my case not allow me to finish the process skips a misconception among other things tells me ...
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81 views

Background (sky/terrain) of a viewshed

Is it possible to determine whether a point feature of a particular height would be backed by sky or by terrain? I've done the viewsheed analysis of a wind turbine. Now I would like to make a raster ...
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268 views

How to write script for Line of sight and Viewshed analysis in Global Mapper

I wanted to write script in Global Mapper for Line of Sight and Viewshed analysis. I tried to calculate using Viewshed and Global Mapper Tools but the issue I am facing is that analysis is user ...
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How to create separate viewsheds for individual points?

I have a feature class with 3000 points. My goal is to have a viewshed, at each point, clipped to 50m and 500m buffers. I want to be able to look at the percent visible/not visible for each point. I ...
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152 views

Viewshed analysis plugin on QGIS keeps resulting in errors

I've been trying to test the Viewshed analysis plugin on QGIS 2.10, but it keeps giving back error messages. I've tried to reduce the radius area and have also reprojected both my DEM and my point ...
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44 views

Viewshed with RpyGeo “rpygeo.Viewshed.sa”

This function is not working: rpygeo.Viewshed.sa(mnt, pt,out.raster="viewshed") *Error in as.character.default(<S4 object of class "RasterLayer">) : no method for coercing this S4 class to ...
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Point to point best link finder, need script?

I am planning a point-to-point microwave system in a geographically very hard area where it is full of mountains. I was searching if there is a way that I set a point and then script a code to search ...
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173 views

Need a free\open source library to calculate LOS & Viewshed using C# \ VB

I'm working in a Radio Propagation Analysis project that required to draw the Line-Of-Sight (LOS) between two radio antennas and calculating the View-shed for one radio antenna. So i need a Free\Open ...
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219 views

ModelBuilder, Iterate by Field and Viewshed

I want to compute the independent Viewshed for 360 different points. If I run these all together, I have one viewshed output which shows how many times any given cell is visible, but this does not ...
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237 views

Virtual machine or bootcamp for ArcGIS

I want to use ArcGIS for viewshed analysis on a Mac. Would virtual machine software such as Parallels or VMware Fusion be powerful enough for viewshed analysis compared with bootcamp?
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67 views

ArcGIS Viewshed's show no visibility to south east

I'm using ArcGIS 10.2.2. I've been running some viewsheds using DTM files from EDINA Digimap and data that I've imported using .csv files. These files only contain the X Y details and a code for each ...
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151 views

GRASS and r.viewshed

I'm trying to run the r.viewshed command using co-ordinates held in a .csv file I imported using v.in.ascii. It has over 200 rows and I'm looking to run viewsheds from each line, without doing it ...
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291 views

Covisibility with QGIS/GRASS : r.los issue

I try to use r.los for a viewshed calculation. I specify the dem (Aster DEM clipped on a 2km*2km region). I specify x and y coordinates and run the command. Nothing append. I waited for 20 minutes ...
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Viewshed Ouput to take into account obstacles/barriers in ArcMap 10.1?

Working on ArcMap 10.1 Basically, I am doing a ZTV (Zone of Theoretical Visibility) "Viewshed". I have completed the analysis for bare earth, just on the DEM surface. But as an addition I need to ...
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22 views

Arc Viewshed2 requires a vertical coordinate system

When I use the Viewshed2 tool with Arc 10.4, a 010451 error results when I try to add the input raster layer to the tool. The error states that the input raster is missing a vertical coordinate ...
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6 views

ESRI Mosaic Dataset returns error when used in Viewshed tool

Using Arc 10.4 I've created a Mosaic Dataset for Alaska's north slope region. The source rasters are NED 1/3 arc-second Arc Grids, single band, 32-bit floating point DEMs that have been projected to ...
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43 views

I get the following error with QGIS on Windows 10 while rerunning q viewshed query that had been ok on MacOS

An error has occured while executing Python code: Traceback (most recent call last): File "C:/Users/marys/.qgis2/python/plugins\ViewshedAnalysis\viewshedanalysis.py", line 194, in run ...
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Refining a Viewshed

I have been tasked with finding the observable area of a canoe route based on a drainage, stream and contour file. First, I made the drainage a line file and then merged it with the stream. I then ...
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43 views

Problem with Viewshed analysis in ArcObjects

I want to execute the Visibility Analysis Tool using ArcObjects 10.3. I tested the tool in ArcMap and it works great with the test data I provided, hence it should work as well in ArcObjects code. The ...
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28 views

Changing defult values in Viewshed tool

How is it possible to define my own values for (OFFSETA, OFFSETB, AZIMUTH1 , AZIMUTH2, VERT1,....) instead of defined default values in Viewshed analysis in ArcGIS?
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122 views

Wind Farm Viewshed/ZTV

I've created an ArcGIS tool using ModelBuilder and Viewshed to create a wind farm ZTV and whilst each raster cell tells me whether there's visibility or not it doesn't tell me what the vertical angle ...
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221 views

Can QGIS create a “virtual view” from a given position?

I would like to be able to choose a position on a map (by clicking, or by entering an address, or other means -- please suggest) and have an artificial picture created, like what I would see if I ...