Questions tagged [3d]

Questions related to GIS objects that have three dimensions.

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3 votes
1 answer
303 views

Generating regular points on 3d polygon surface?

I have some CityGML buildings and I imported them into postgis database using 3d citydatabase. I want to generate points on buildings surfaces just like in the shown image. Building surfaces are ...
1 vote
1 answer
676 views

Importing SketchUp (skp) file to ArcGIS Pro

I've downloaded some 3D data from 3dwarehouse.sketchup.com Now, I would like to open it in ArcGIS Pro but I cannot find how can to do it. How can I do this?
2 votes
1 answer
4k views

Can Google Earth be used to display underground 3D structures?

Trying to make it easy for a non-GIS savy person to view the 3D data I produced in ArcScene. I can't seem to get Google Earth to view underground/below the standard imagery.
3 votes
1 answer
80 views

Area calculation for non-planar surfaces

I am looking for a way to calculate the area for a big set of 3D-surfaces. I know, that some of those surfaces are slightly non-planar, which means that the coordinates got somehow "rounded" ...
2 votes
1 answer
312 views

Placing a label above a feature in 3D/Scene using ArcGIS Pro

Is it possible (using ArcGIS Pro, 2.5.1) to manually or by derived extrusion (i.e. from a DTM) set the height of a label to sit/float above a feature? I see you can use an extrusion but that requires ...
0 votes
1 answer
94 views

Assigning a polygon shape to density values

I am pretty new to GIS as a whole. I have a simple flat file in a csv format, as an example: lat,long,name,val 25,40,abc,10 50,44,def,20 What I am trying to achieve is to assign a 3d polygon in ...
2 votes
0 answers
493 views

Converting Points shapefile to 3D polylines in QGIS (without Grass)

I'm using QGIS 3.10 and am trying to come up with a way to create a shapefile of polylines with Z attribute attached, starting from a points shapefiles. Both Saga/Convert Points to Lines and QGIS/...
0 votes
1 answer
43 views

Writing PolylineZ shapefile with pyshp [closed]

I am trying to write a POLYLINEZ file in Python with pyshp and find the documentation lacking... When importing a POLYLINEZ shapefile, the x,y values are separate from the z values. (sf.shape().points ...
1 vote
1 answer
24 views

How to tell if a layer is Z-aware or M-aware

I am trying to detect if a layer is Z-aware or M-aware. If it is, I need to flag it to be reconfigured without Z/M-awareness. In the example below, I have already pulled down the layers and am ...
7 votes
3 answers
8k views

How to create 3D globe view with OpenLayers?

I want to create 3D view. and I am using OpenLayers. Is it Possible?
2 votes
0 answers
43 views

3D globe on QGIS 3D view

I am using QGIS 3.22. Is there a way to load a 3D globe model into the 3d view in QGIS so I can turn it around and etc. like Google Earth? If it possible where can I find or how do I create something ...
4 votes
2 answers
3k views

Giving 2d contours Z-height from attribute table in QGIS

I have a contour data file downloaded from UK Ordnance Survey, which gives 2d contours of an area in gml format (also supplied in .shp format) with the heights of each contour attached to the ...
1 vote
1 answer
177 views

3D animation in ArcGIS Pro

I have been hearing about ArcGIS Pro and its 3D abilities from here and there in the last few days. I haven't used it till now, but I am wondering if it is able to produce 3D animation of flow of ...
0 votes
1 answer
209 views

Viewing 3D shapefile in QGIS

I have 3D shapefile which displays fine in QGIS 2D (and 3D in ArcScene), but I am having trouble changing to 3D view in QGIS. Shapefile is an imported polygon set (in a local CRS) > I get the ...
2 votes
1 answer
788 views

Generate Cesium 3-D tiles from shapefile with FME

I'm trying to generate 3-D tiles from a shapefile. Just simple shp reader directly to Cesium 3D tiles writer. It does generate files, but after uploading them to Cesium Ion it does not work. It can'...
3 votes
1 answer
1k views

Creating 3D model of real terrain [closed]

I'd like to create 3D model of some real terrain (to be exact it's about some real roads and only as much as 80m to 100m of roadside - 40m to 50m of each side). As I don't have access to highly ...
0 votes
0 answers
13 views

Cannot set my DEM in ArcScene to 3D

I read other responses saying that DEMs will automatically appear as 2D, but you need to drape your DEM over itself. Those instructions included opening the properties and clicking on the Base Heights ...
0 votes
0 answers
45 views

Export 3D data from PostGIS to any common open and standardized 3D file format

I am mainly curious, because I found this function: ST_AsX3D() in the list of PostGIS 3.2 "ST_As{something}" functions: st_asbinary, st_asbinary, st_asbinary, st_asbinary, ...
0 votes
1 answer
220 views

How to get QGIS to make 3D mesh (triangles or quads) from points with 3D coordinates?

I have random added points with height. GeoJSON looks like this: { "type": "FeatureCollection", "name": "randompoint_Zadded", "crs": { "type"...
1 vote
1 answer
495 views

cut/fill calculation tool to investigate if there is enough material to achieve a 30 degree slope

This is a cut/fill problem. We have pits that have been dug in the ground, usually rectangular. They have a bund wall around them. They are being rehabilitated by pushing the bund back into the pit. ...
0 votes
1 answer
2k views

Visualizing 3D Polygon Layer Stack using QGIS

Is there a way, or plugin, to visualize a 3D polygon layer stack in QGIS? I have looked at NViz, but it only seems to work for rasters. I have a building floor plan with Z info for each floor. In ...
2 votes
1 answer
942 views

Exporting Georeferenced Models from Meshlab?

I am struggling to understand Meshlab's and 3D mesh file's relationships to georeferencing. I am coming from a GIS background, so I believe my assumptions on how this should work are preventing me ...
1 vote
0 answers
54 views

3D visualization for irregular boundaries shows an infinite height

I am new to GIS. I am trying to visualize a DEM with irregular boundaries. When I am trying to show it in 3d via 3D map or Qgis2threejs, the boundaries get an infinite height that I can no longer see ...
3 votes
1 answer
660 views

QGIS does not show 3D models with textures in 3D map view

The problem When I load 3D models (Wavefront .obj files) to QGIS 3.22 on Win10, they show up correctly in 3D view, but only when Shading is set to Realistic (Phong) or CAD (Gooch). When I select ...
9 votes
3 answers
38k views

Creating profile cross-sections in ArcGIS Desktop 10.x? [closed]

Because the default 'Profile Graph' tool was not sufficient, I wrote a custom VBA script that creates scaled and exaggerated profile cross-sections in ArcGIS but I need more features: Visualize more ...
0 votes
1 answer
40 views

Creating polygons that follow the curvature of the Earth in ArcGIS JS

I am trying to divide a globe into equally sized squares and render them using ArcGIS JS where the rendered polygons follow the curvature of the earth. So far, I've made an algorithm to divide a ...
6 votes
6 answers
13k views

Seeking open source/free software for generating 3D view of mapping

Is there any software that will generate a 3D view given a DTM/height data and raster mapping, and output an image in a printable resolution? I am looking for something similar to what you'd find in a ...
0 votes
0 answers
172 views

BlenderGIS: georeferencing and exporting 3d model?

I can add a georeferenced basemap using BlenderGIS and overlay my 3d model on this basemap. I want to export this 3D model as a georeferenced file, but only see a shapefile export option (which cannot ...
2 votes
1 answer
59 views

Selecting elevation band for QGIS 3D view

The Terrain panel of the 3D configuration window allows selecting "DEM" as the type then selecting a layer for the elevation data, but it defaults to using the first band of that layer for ...
0 votes
0 answers
36 views

Automated georeferencing 3D (multipatch) geometry in ArcGIS Pro?

After importing a 3D Collada (.dae) file using the "Import 3D Files" tool, I need to georeference it using the Edit tools (move, rotate, and scale). This is a tedious and error-prone process....
8 votes
1 answer
404 views

3-D Terrain effects for vectors in QGIS?

I'm a bit new to QGIS, and making a few maps of roads through mountains. I'm looking to have a 3-D effect within my 2-D map. I got a DEM, made a hillshade, and blended a basemap over it. Nice ...
3 votes
0 answers
242 views

3D buildings from OSM data for historical interaction

What I am trying to do: Have a 3D interactive map, embedded on a website, that allows viewers to click on buildings which opens up a 'more info' HTML overlay with links/text/images about that specific ...
0 votes
1 answer
55 views

Extracting above-ground part from Multipatch buildings with ArcGIS Pro?

I have a lot of 3D buildings in Multipatch format (the grey features in the screenshot) and need to extract the building parts above ground. I thought it should be possible to interpolate 2D buildings ...
1 vote
0 answers
31 views

v.to.3D failing in QGIS

I'm trying to use v.to.3D in QGIS to create lines with proper elevation so I can export it to DXF. However, I'm running in to some issue when using v.to.3D. When googling I have seen others asking the ...
1 vote
1 answer
216 views

French point cloud data won't render properly in QGIS 3.22.3

A question to the 3-D literate QGIS crowd: I downloaded .laz files from the French LiDAR data portal (https://geoservices.ign.fr/lidarhd#telechargement) and can't get it displayed in QGIS 3.22.3 (...
2 votes
0 answers
73 views

Seeking Python library to check validity of 3D polygon

In the case of 2d polygons I have been using shapely: from shapely.geometry import Polygon Polygon(points).is_valid But for 3D polygons, shapely simply computes the validity in the x-y plane as ...
9 votes
2 answers
353 views

Creating ellipse around line in 3D space using R

BACKGROUND: A similar question has been asked before, but not answered; see Creating ellipse around line in 3D space using PostGIS. I am a new user asking this question but hopefully with more details....
0 votes
0 answers
149 views

Converting GeoTIFF to 3D shapefile?

I have a GeoTIFF in which the data represents flood heights. I want to create a 3D vector that shows the flood heights from the GeoTIFF. Please suggest any methodologies/tools if this is possible.
0 votes
1 answer
88 views

QGIS 3D Animations sequential photos to video

The 3D save animation function output in QGIS (3.16) is a set of sequential photos. How do I transform those images to video? I tried converting to GIF but the file was too heavy.
1 vote
1 answer
258 views

How to turn raster of RGB points to elevation map?

I have a 2d RGB raster image It has points with RGB in each point, Black background. It is a form of a depth map. I want to turn it into elevation points: turn RGB data from channels into XYZ data. I ...
5 votes
2 answers
6k views

QGIS shapefile to 3D visualization in unity

I have a shapefile that I would like to import to Unity. The shapefile is in 2D and I also have access to the data that it has through PostgreSQL. My question is this: "Is there a way to transform ...
1 vote
1 answer
51 views

Why does OSGEO/OGR add a third dimension to my 2D geometry?

When I instantiate a new wkbPoint geometry and give it only two coordinates, I expect it to be specifically 2D. However, a third coordinate automatically gets added as 0. See my code below: from osgeo ...
1 vote
1 answer
144 views

Making 3d layer Symbol transparent in QGIS

I want to display a 3d symbol (from .obj file) yet make it of single transparent color. How to do such a thing in QGIS 3.22 or later? Can one inherit a Material class say from python for example and ...
17 votes
6 answers
42k views

3D perspective on maps in Leaflet, CartoDB?

Are there any JS library out there that would render normal, flat maps (like Leaflet) into a perspective map like this one, on the web: Also, anyone seen anything that could turn CartoDB data into 3D ...
1 vote
0 answers
66 views

What could explain the bizarre discrepancy in the geometry between these two 3D maps?

GPS location: 33.67619789331771, -117.68029382324094 MapBox GL JS screenshot: Google Maps screenshot: What could explain this? It should be noted that, for the places I actually know in real life, ...
2 votes
1 answer
367 views

Calculate angle between two 3D points [closed]

Given two points with xyz-coordinates, how to find the angle between them as shown in the picture. Is there a tool for it in ArcGIS Pro? I have looked into PointGeometry, but it did not seem to have ...
0 votes
0 answers
20 views

Improve ALOS World 3D vertical precision with GPS data from fieldwork

I'm working on sport topo maps in Russia, european part (Pskov region, near Estonia/Latvia border), typical map is from 1 to 10 km2 in size. The most precise source of DEM for generating relief lines ...
18 votes
3 answers
1k views

How much Water on Earth(USGS) : A Wrong Map representation?

I happened to read a USGS article, How much water is there on, in, and above the Earth? showing a representation of all the water(which includes water from Oceans, Seas,Bays,Ice caps, Glaciers, ...
0 votes
0 answers
12 views

Creating TIN has failed ? for 3D visualization of DEM

My DEM size is 100MB. z values ranging -> low -73 and high 1036 When I am trying to convert raster to TIN following inputs were provided z tolerance and z factor as 1 and Maximum no of points ...
0 votes
0 answers
35 views

Creating 3D base for map (like extrusion into negative) using ArcGIS Pro

Using ArcGIS Pro 2.8, I created a raster of a 120x120 m forest quadrat, and projected it onto an elevation surface containing elevation data for the quadrat. I now want to add a 3D base to the map, to ...

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