Questions related to GIS objects that have three dimensions.

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4
votes
2answers
886 views

Retrieving average building height in urban areas

I am looking for a way to collect data on the height profile of some cities over time. I don't need to produce a detailed 3D reconstruction of cities, nor do I need to detect and measure individual ...
1
vote
1answer
106 views

Converting DTM data to STL?

I'm new here and was wondering if anyone could help? I'm looking to make some 3D maps using DTM data but need to convert it into .STL format for my MasterCAM to read so that I can generate the CAD ...
4
votes
2answers
1k views

Georeferencing 3D model or 3D buildings?

I am working on a 3D project so I have to georeference 3D buildings which are created by 3D designer. Does anyone know the solution?
0
votes
0answers
29 views

Meaning of zero in fromxy/toxy of ArcGIS Near 3D tool?

I am using ArcGIS 10.2 for Desktop. I am running the near tool for points with different attributes. Many are in the same location, so I would expect the Near_DIST3 to be zero and the location of the ...
2
votes
1answer
229 views

Landform design/3D in ArcMap 10.2

Im a self taught ArcMap user working in a small business, so no one to bounce problems off. My aim is this: I would like to be overlay different surfaces, manipulate them, and display them. The ...
0
votes
0answers
145 views

Details about Google Maps 3D / Google Earth 3D Switzerland

Are there any information/publication about Google Maps 3D / Google Earth 3D Switzerland? Like which databases resolution and source of DEM (laser-scan or photogrammetry) resolution and source ...
0
votes
3answers
1k views

Why is my DEM in ArcScene flat, not 3D?

I am working with Digital Elevation Models in format TIFF 2km * 2km. As far as I know DEMs should have a 3d function but in my case the DEMs are flat. They only look 3d because of the hill shading. ...
2
votes
2answers
987 views

Converting Shapefile to X3D format?

Does anyone know of an effective workflow to convert 3d-enabled shapefiles to X3D format? I have several projects containing anywhere from 10 to 5000 features (building sections) that I would like to ...
1
vote
2answers
293 views

Cross-platform 3D mapping solutions

I am a new software developer who created an application at my work that continually displays content on the Google Earth desktop application using KML. My work now would like a mobile solution to my ...
1
vote
0answers
55 views

Conversion from .shp to .dxf in one unified layer

I am trying to make a 3D .dxf out of a 2D shapefile for several hundred buildings. Doing this in one fell swoop is proving to be a roadblock. In ArcScene, I extruded building heights for maybe two ...
2
votes
2answers
365 views

Is it possible to rectify an aerial photo with known control points in 3d, in QGIS?

Bonjour, Peut-on avec Quantum GIS redresser une photo aérienne avec des points caractéristiques connus en 3D (XYZ) ? -- Translation: Hello, Is it possible to rectify an aerial photo with known ...
3
votes
1answer
454 views

How to find the concave hull for a cloud of points in 3D space?

The existing algorithm for convex hull is not able to capture the feature for a set of 3D points. Moreover, I found few mathematic tools have this function to obtain the concave hull and their ...
0
votes
1answer
157 views

How to add 3D features in Online ArcGIS (Story Map)

How to add 3D features in Online ArcGIS (Story Map) - I created the 3D layers / features using ArcMap Desktop and ArcScene I'm a student and a newbie looking for detailed information.
1
vote
0answers
39 views

Is it possible to render several DEMs simulatneously with QGIS2threejs?

I'd like to know if anyone knows a way of including several DEMs in one representation using QGIS2threejs. If I have two separate DEMs, each representing one modeled surface, both from the same ...
1
vote
0answers
61 views

How to get azimuth and altitude from a 3D surface in PostGIS?

I would like to know the azimuth and tilt of a polygon / surface in a PostGIS database. The azimuth should be given e.g. from 0° to 360° degrees. The altitude should be between 0° to 90°. An example ...
0
votes
1answer
121 views

Remove 3D geometry in shapefile using OGR

I have a series of shapefiles, that have 3D geometries (ie: points ZM). I would like to remove the 3D geometry so that the files are 2D. Is there a way to remove 3D geometry from a shapefile using OGR?...
1
vote
1answer
208 views

Cesium: Failed to obtain image tile X : 0 Y : 0 Level : 0

I'm trying to make a Cesium-based 3D web-viewer. At the moment I'm stuck with an error. Let me describe the situation: I have a PostGIS database, containing the 3D geometry of a building (which I ...
1
vote
0answers
151 views

Exporting 3d map in format manageable by VRML Java viewer?

I am new to GIS. I am working on a mapping project for scuba diving sites, and I need to create 3d maps viewable by users on android tablets, iOS, websites, etc... So far, I achieved the map result ...
0
votes
0answers
32 views

Pulling the building from ground to roof

I use Microstation v8. I have to make a building (solid) from existing property register (on the base level) cut on the top by the roof (which I have already). To sum up - I own the property register (...
1
vote
0answers
37 views

Converting 3d images in meters to feet when exported to dxf

In QGIS 2.10, I am using the raster calculator to convert a metric elevated raster to feet and then create 2 foot contours (no problem). But when I dxf it out and put it in CAD, I can get the contours ...
2
votes
0answers
55 views

3D model to DEM, maintain volume?

Bit of a challenge here which I've been grappling with for some time. I'll explain my full work flow so you can reproduce if needed. I'm creating virtual landscapes in Google SketchUp which I ...
4
votes
2answers
1k views

How to visualize 3D model in ArcGIS?

I have hypsometric map/model of mountain which I get by contour lines with Z value. Can you explain how to visualize 3d model in ArcGIS? I need to get something like nviz command in GRASS.
5
votes
1answer
397 views

Contour lines with imported shape file using Blender GIS - wrong Z values

I've been making experiments with Blender GIS and QGIS. I'm having problems when importing Shapefiles with contour lines, with a field for elevation (ELEVATION FROM FIELD selected when importing). I'...
9
votes
5answers
29k views

Creating profile cross-sections in ArcGIS Desktop?

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 ...
1
vote
2answers
187 views

Can QGIS import Multipatch geometry type?

can QGIS import multipatch 3d geometry type? What is the data structure of multipatch how computer record and draws it ? Is it solid or not??
1
vote
2answers
157 views

creating GIS data directly on camera images

If I'm taking few photos with superimposition and enabling a stereo system for images pairs, Is there a software for 3D or 2D calibrating that will enable then creating GIS vector data directly on ...
4
votes
1answer
937 views

Is it possible to draw a 3D Choropleth Map in ArcGIS?

What I have in mind is something like these two examples below: Also, if it is not possible to create a 3D choropleth map in ArcGIS, is there some other GIS software package that can draw 3D ...
0
votes
0answers
44 views

How to get a mercator projection from a “disk photo”

I'd like to build a real 3d globe of Pluto using latest images made available from New Horizons. I know how to convert a mercator projection into a "12-gores" projection, suitable to be glued over a ...
5
votes
1answer
166 views

Why are z-values replaced with zero after in_memory use in Python?

My script takes separate 3D feature classes, calculates a field, appends to a target feature class, and then deletes the originals. This is a huge data processing task of over 4700 mass point feature ...
1
vote
0answers
150 views

How mix 3D Data from Google Map and one's 3D object?

Is it possible to add some 3D object in the 3D maps from Google ? Which tools should I use (never used 3D modelling tools but I'm motivated :) Here is the picture that triggered my question :
1
vote
0answers
58 views

How do I extract building elevation values from Multipatch GDB

I have a GDB Multipatch Buildings layer that I open with ArcScene or ArcGlobe. I want to extract building elevation values, but this is not stored in the attribute table. I can run a "Add Z ...
2
votes
0answers
94 views

How to create isometric 3D map with postgis

I am looking for a way to create isometric 3D maps based on data stored in a PostGIS database. My idea is to create a PostGIS function that will return a SVG image like the one below. It is easy to ...
2
votes
1answer
164 views

3D model of rooftops based on LiDAR and cadastral data?

I´m trying to model building rooftops based on a LiDAR dataset. I've already interpolated using Delaunay's triangulation a DEM with 1 meter resolution. Due to LiDAR data is not accurate in building ...
5
votes
3answers
454 views

Why aren't 3D Globes used as the basis of GIS systems?

Maps have been around for thousands of years and have been widely accepted as the means of representing spatial information. We all know about several map projections,each with their merits and ...
0
votes
1answer
49 views

What Story Maps support replacing the map with a 3D scene?

I am currently creating story maps to be able to display a 3D scene to users and I am trying to decide which layout works best. Right now I have run into an issue where only certain story maps will ...
7
votes
2answers
9k views

Is there QGIS plugin to allow 3d visualisation of geological borehole data similar to functionality of Target for ArcGIS?

I'm very new to QGIS, I have started using it as my new company is not willing to pay for ArcGIS and Target at this stage so I'm hoping QGIS can substitute not just in the interim but for good. What ...
1
vote
1answer
309 views

Elevation data from 3D shapefile of buildings to raster DEM

I have acquired LoD2 building models in the 3DShape format (Polygon ZM). This LoD2 data needs to be prepared for a R-script of solar irradiation calculations on roof surfaces, but which can only ...
3
votes
4answers
4k views

Displaying latest satellite images and adding shapefiles on globes other than Google Earth?

Are there alternatives to Google Earth that will display the latest satellite images and can add pinpoints and are relatively intuitive? It would be nice if I could possibly add shapefiles on top of ...
0
votes
2answers
147 views

3D equivalent to ArcGIS API?

I am currently working on a 3D mapping project. And I have created some KML files from ArcGIS Online, and I have edited them in Google Earth to adjust the 3D attributes. I am also designing a webpage ...
1
vote
1answer
65 views

Donut polygons getting filled when exporting to 3d Web Scene

I have built a model using ArcScene by draping 2D polygon data over an elevation raster and am having issues when using the Export to 3D Web Scene tool. The tool builds the model successfully, but ...
2
votes
2answers
124 views

Exporting from NVIZ

I need to export a 3d model made from a DEM with a satellite photo draped over it. I'm using qGIS 2.8.2 and NVIZ, and am having a few problems. 1) How do I get a full colour image draped over a DEM ...
2
votes
0answers
83 views

Creating a 3D model of airspace that I can interrogate to see if some other feature (like a tree) will intrude into the airspace

The goal is to create a 3D model of imaginary planes in space that I can interrogate to see where other objects in the vicinity of the model cut through any part of that plane. For example, an ...
2
votes
0answers
327 views

ArcGIS - multipatch and surface

I want to get 3D building. I have DEM surface and 3D feature of building roof. I created multipatch class by extruded building roof with '-' value. Is it possible to create building from this ...
1
vote
0answers
66 views

Creating Dynamic 3D Buffers in ArcGIS Pro

I am currently using ArcGIS Pro to model WiFi router signal distribution and I would like to use buffers to display them in a 3D format. I have used the Buffers 3D tool to create spherical buffers, ...
3
votes
1answer
69 views

How to create 3D boxes within a KML file without ground contact?

I'm actually trying to visualize the output of an atmospheric model within Google Earth using a KML file. The model is divided into several 2.5 x 2.5 x 2.5 km boxes and each box should get a color ...
2
votes
2answers
76 views

3D queryable GIS

I've used GIS for many years, and now I'm moving into 3D GIS, but I have some questions. Say I have a 3D model of a viliage, I can get this into Blender, but I want to be able to run GIS type queries....
5
votes
1answer
206 views

Can I identify if a point is inside a volume in PostGIS?

We are currently investigating PostGIS as an option to look up three-dimensional blocks which contain a point (and later also lines). At this point in time I cannot see any functionality that operates ...
4
votes
1answer
2k views

TIN Creation from 3D Contour File

I'm currently trying to import a 3D contour file into a QGIS project. How can I export the DXF file from Microstation with height information? I already have imported it to the QGIS project but ...
0
votes
1answer
202 views

pgRouting with multiple floors [duplicate]

Hoping I might get some help with indoor multi-floor routing using pgRouting. At the moment, I have a dummy network system created to analyze shortest routes between locations with the results served ...
2
votes
1answer
1k views

What are nodes in ArcGIS and how do you create them?

I want to create a elevation profile of a cross section so a polyline on ArcGIS. I wanted to regularly space around 1000 points per 1700m long xsection and extract elevation data for each node/point ...