Questions tagged [building-heights]

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Extracting building footprint from OSM or Satellite imagery using QGIS

I am trying to extract the building footprints from satellite imagery or from OSM using QGIS. In ArcGIS it is a straightforward task however, I don't know how to do it in QGIS. I need to recognize the ...
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Building, vertical alignment and urban densification [closed]

I am looking for a methodology to select using a land layer (plot) and a building layer the land where the buildings have low height and are located between lots with high buildings. Has anyone ever ...
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Mapbox 3D building layer does not have 'height' property and all buildings are flat

mapbox-gl-js version: 2.4.1 source I am trying to get 3D buildings in Mapbox, but they are just flat, I added code to get the feature when I click on them and they have no height property, which is ...
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1answer
19 views

Where to find building heights/levels for North America

Up until recently I have been a blind user of tile maps using Leaflet and one or the other major providers such as Here, MapBox etc. For my current project I find it necessary to have far finer ...
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Exporting height values in ArcGIS Pro

I have ArcGIS Pro and I need to find a way that would enable me to export a file containing the height values of the entire .NTF/.TIFF files that I'll feed in. I read this manual from ArcGIS to get ...
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Adding height values in QGIS using v.to.3d

I am trying to create a 3d map in QGIS 3.12.3 using v.to.3d, I have Grass installed and have Height values stored in the attribute table of the 'Habitats [EPSG:4326]' layer I am trying to make 3d. ...
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202 views

How to extract height of building and roof structure from nDSM data

I am working with QGIS; SAGA; OrfeoToolbox and I try to create LOD1 and LOD2 building models. I need help to recreate LOD1 (or LOD2) building models from DSM / LIDAR data. I have a footprints of ...
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27 views

Generate buildings polygons

I'm doing a project for a city that has little database. I would like to know if it is possible to generate polygons of existing buildings and 3D of them from a Google Earth map in QGIS?
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2answers
83 views

QGIS 2.5D-buildings stretched

I have managed to create a 3D-landscape from DEMs and are trying to get my building layer in 2.5D in this landscape. My buildings are retrieved as polygons with height defined in the attributes. When ...
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20 views

What is the UOM of Microsoft Footprint 2017 height data

It says on the website that height's unit of measurement of MSFP 2017 is in meters. However, as I looked into some real building examples on Google Map street view, they height looks very inaccurate (...
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1answer
1k views

CHM (Canopy height model) = DSM (Digital surface model) - DTM (Digital terrain model)

I want to create a canopy height model (CHM) which has the height of objects (trees, building, etc.) from DSM and DTM. Below is the step by step procedures which I did so far. I use open source s2p ...
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2answers
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Creating building shadows in QGIS?

Can anyone think of a simple way to create a polygon to represent building shadows? I have a shapefile with height information for the buildings and I want to create a simple plan looking like the ...
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1answer
349 views

Using Z-Values instead of attribute Z?

To locate any vertex, it is spatially described with x and y coordinates - of course. You can also add Z and M values - but what is the advantage to use the Z in the vector instead of a attribute Z in ...
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1answer
225 views

Estimating building and vegetation volume with unclassified LiDAR datasets?

I'm trying to determine the ratio of building to vegetation change (i.e. how has the volume of built structures changed in proportion to the volume of vegetation) in a city over a period of five years....
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1answer
522 views

Add building height as obstructions to viewshed analysis in ArcGIS Desktop?

I have LAS data. I have made a DEM from the LAS points. I have a Z-enabled polygon feature representing building footprints. Somehow I need to incorporate the height of the buildings into my DEM so ...
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1answer
241 views

EMU Building Heights Layer and QGIS

I am new to using QGIS and for a recent project I am looking at the building heights for London. I have managed to download the free EMU Building Heights Layer and added into my existing file, through ...
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1answer
1k views

Getting buildings multipatch from LiDAR data without building footprints?

I have a 3D LiDAR data and aerial images. Is there a way to obtain the buildings multipatch (.shp), given that I don't actually have the buildings' footprints?
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1answer
176 views

Know the shadows of a house before building it

Imagine a house/building, seen from outside, at sunrise. As the the sun moves in the horizon, a) the shadow of the house is displaced/deformed, and b) some faces of the house have more/less sunlight ...
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2answers
298 views

Mapzen / Tangram topojson building data alternatives

I'm using Vizicities to visualise 3d building data on a map. Vizicities uses Mapzen vector tiles: http://tile.mapzen.com/mapzen/vector/v1/buildings/{z}/{x}/{y}.topojson?api_key=[key] With Mapzen ...
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1answer
671 views

Buildings height extraction

I am a QGIS new user and I want to extract the buildings height of a territory. I clipped the raster with the LiDar informations with the buildings polygons; after I have extract the contours level ...
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1answer
192 views

Summing attributes of different shapes into another (height of contours + height of buildings)

I'm using QGIS 2.18. I need to calculate the height of the rooftop of each building in a neighborhood. I have a vector shape of the buildings, with the building height attribute (from the ground to ...
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1answer
2k views

Heights of buildings using QGIS

I need to display the heights of the buildings from a given map using QGIS. I do have OS vector map district data from ordnance survey (https://www.ordnancesurvey.co.uk/) web site that is supposed to ...
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1answer
716 views

Extruding building heights from 3D terrain model creates sloped buildings

How can i prevent sloped buildings when I extrude building footprints over sloped terrain? I am using FME to drape 2D features over terrain (SurfaceDraper), then using the Extruder transformer to ...