3D is an object that has three dimensions.

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2
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1answer
25 views

SDO_Inside equivalent in PostGIS for 3D objects

I am looking for a solution for querying a point whether it is located inside a 3D object or not. If the point is located on the surface of 3D, I could use ST_3DIntersects or ST_3DIntersection. But, ...
2
votes
0answers
38 views

3D visualization of terrain data and orthophoto using GRASS NVIZ via QGIS

How can I make 3D visualization of terrain data and orthophoto using GRASS NVIZ via QGIS? I am quite new with GRASS. I have only managed to get a 3D view of the terrain so far.
1
vote
1answer
32 views

How to increase the resolution of a 3D image in QGIS GRASS NVIZ

I'm trying to display 3D data in NVIZ within QGIS, but the result appears very low resolution in comparison to the same data in ArcScene. Any ideas as to how to improve the quality would be greatly ...
0
votes
2answers
83 views

How to bring 3D object into 3D application?

I'm doing some GIS as part of my college course and have just started to do some 3D modelling, I'm really a GIS novice, The module is short (only 5 lectures) My lecturer has said that it is possible ...
3
votes
1answer
54 views

How to extract DEM (Digital Elevation Model) from 3D model

How can I extract a Digital Elevation Model from a 3D model of a building, made with SketchUp, using Blender,qgis or any other software?
5
votes
4answers
2k views

3D subsurface modelling

I am a student and initiating a thesis project for MS specialize degree in geophysics. I am working on tectono - stratigraphy of some area and want to do the 3D subsurface modelling of the same area ...
0
votes
2answers
93 views

How could I insert a 3-D LineString into postgis table?

Using: CREATE TABLE trajectories( gid SERIAL PRIMARY KEY, vehID VARCHAR(10), state INTEGER, geom geometry(MULTILINESTRING) ) I get an error, for instance, after inserting: INSERT INTO ...
2
votes
2answers
381 views

Unable to load 'nviz' through GRASS

I am using QGIS 2.0.1-Dufouron on Windows 7. When I try to load nviz via GRASS, I get the message "Module nviz not found". Weirdly enough, I can load it via the toolbox and be able to 'run' it (it ...
15
votes
6answers
1k views

What are some 3D visualisation tools that successfully work with GIS data?

There are a large number of 3d modelling tools available (both open and closed source). I would like to be able to: Import GIS data into a 3d environment and retain georeferenceing. Retain the ...
0
votes
1answer
129 views

What KML features are suitable to display 3D atmospheric density data using Google Earth?

I wish to use Google Earth to visualise and explore 3D atmospheric density data. In my case it is ionospheric electron density, which is a niche area, but I can imagine this might have been done by ...
0
votes
1answer
46 views

PostGIS Column has Z dimension but geometry does not

I am able to create a geomtry column for 3d multiline using this: CREATE TABLE trajectories ( gid serial NOT NULL, vehid character varying(10), state integer, geom ...
1
vote
1answer
494 views

Using Calculate Field (Data Management) tool to calculate 3D Length in ArcGIS 10.1

I'm relatively new to the world of model builder and scripting, so it's likely there is a very simple solution to the question I've been trying to figure out. I'm trying to create a tool that takes ...
0
votes
1answer
40 views

Z value (height,altitude) from 3D multipoint shapefile in QGIS

Is there a way to get Z value/height/altitude from 3D multipoint shapefile in QGIS? All I found is way through SpatiaLite or PostGIS as explained here: ...
1
vote
2answers
362 views

Importing MaxSea 3D Database to PostGIS

I am currently working on a project, where I combine several MaxSea 3D databases, which contain depth measurements made by the echosounder onboard on a ship. The idea is to combine these databases to ...
1
vote
1answer
21 views

Local Coordinate System

I am currently evaluating the use of PostGIS (version 2.0) for: a project that will store 3D coordinates (x, y, z) data the data will have it's own local coordinate system which does not correspond ...
2
votes
1answer
130 views

iPhone app to record 3D location information

Does anyone know of an app that would run on an iPhone or iTouch that would record the X,Y and Z information from an external GPS? I am using a Dual XGPS150 Bluetooth receiver. The GPS will record ...
1
vote
1answer
1k views

DEM to STL (3D Printer Format)

I have a DEM in ArcGIS 10.1 that I would like to get into STL format for a 3D printer. Does anyone know some software that will allow me to make this conversion? I have to use the STL format because ...
1
vote
1answer
70 views

Visualization of 3D GIS daten with 3D glasses

A colleague of mine wants to inspect 3D aerial photos in 3D with 3d glasses. He thinks he just needs the right 3d Graphics card and monitor with more Ghz - something along the lines of nvidia 3d ...
1
vote
1answer
202 views

Polyline ZM: automatic vertex height errors correction

Paolo I've got many rivers (polylines ZM) with a lot of height errors in Polylines 'vertices. Vertices' Z errors are not all equal in height (i.e. they are not all at zero height). I must create a TIN ...
6
votes
5answers
840 views

Open Source Stereo Compilation Software

I work in a Geography Department at a small university and we are looking at putting in a 3D Stereo Compilation systems. We have been looking at Stereo Analyst, PurView and Dat/em, but I was ...
5
votes
2answers
686 views

How to drape a simple jpeg image over dem of some area?

How can we drape a simple jpeg image which doesnot have any geo referencing information over the digital elevation model in order to visualize it in 3D in QGIS?
1
vote
0answers
25 views

Buildings missing texture in 3d web scene exported from ArcScene

A random sampling of buildings are missing textures. The models were made in Sketchup 8 and exported to COLLADA, then dropped in ArcScene. All of the textures are .jpg files. The models look fine in ...
1
vote
2answers
53 views

Software to detect intersections (within a tolerance) between 3d polylines

Is there any way to detect intersections (within a tolerance) for a 3d set of polylines? ArcGIS Topology Check seems to project everything into 2d (x-y plane) before checking, so shows a lot of false ...
8
votes
4answers
1k views

How to view LiDAR data from a web browser?

I am looking to host lidar data on my own server and give clients the ability to view that data through a web browser as a 3D point cloud (file would be in .las format or equivalent), possibly with ...
6
votes
2answers
162 views

How to sample a 3D raster along a 3D path (or 4D raster along 4D path)?

I have a 3d raster dataset of atmospheric variables (lat x lon x altitude). I would like to sample this raster dataset along a 3d path. Any idea how I can achieve this, preferable with qgis or ...
0
votes
1answer
47 views

which Coordinate system should I use for 3D analysis?

I am creating 3D surface below the earth's surface using ArcGIS and then I need to find distances to the plane from the surface. Which coordinate system shall I use? 3D interfaces like IProximity3D ...
17
votes
3answers
5k views

Which software to use to create professional fly-over/ fly-through animations?

I will need to create a high quality fly-over animation which penetrates the surfaces and reveals subsurface geology. The intended use is for demonstrations, presentations and a company website so it ...
0
votes
1answer
30 views

Use Microstation wireframe model for OpenStreepMap

I've got an entire city in Microstation DGN format. I'm able to convert it into Google Earth (KML), DXF, SVG and other formats, and then in .osm with ogr2osm. However, the 3D model is build entirely ...
9
votes
3answers
945 views

How can I digitize features on an Y,Z plane in ArcGIS?

How can I geo-reference and digitize features on a Y,Z plane of a vertical cross-section in ArcGIS? The surface coordinate system is NAD 83 UTM 15. This is a simplified version of the question found ...
0
votes
1answer
181 views

3D Raster's and Geosoft Montaj/Target, Leapfrog, GoCAD [closed]

I'm trying to figure out what the best format to serve 3D images inside our company. Specifically georeferenced Tiff's that have been placed in 3d space with Geosoft Montaj. We use ArcMAP ...
3
votes
1answer
50 views

Is extrusion of a line (which is curved) into a plane at a certain angle possible in ArcGIS?

I have a polyline shape file which is a fault trace on earth's surface. I want to extrude this into a 3-D plane at a certain angle (which is dip angle of the fault). However, the extruded plane ...
0
votes
0answers
12 views

How to create surface by 3d building with different vertices [duplicate]

How to create surface by 3d building with different vertices(slope roof)? For example, in ArcGIS software. In other words how to interpolate this roof.
1
vote
0answers
20 views

How can I filter a MultiPoint Z / xyz points against a 2d polygon [duplicate]

I would like to filter point data from LIDAR scans (3d) by parcel plot lines (2d). I began with loading the lidar data into microsoft sql and performing a STIntersects between the MultiPoint and the ...
5
votes
6answers
1k 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 ...
0
votes
1answer
27 views

GRASS GIS v.in.ply

I'm trying to import a .ply file from MeshLab 1.33 into GRASS GIS 7.0 using v.in.ply addon, but I get the error message: ERROR: List index must be integer, is uchar This appears to be referring to ...
1
vote
1answer
27 views

GRASS GIS 3D - Inconsistent number of attributes

I am trying to automate my 3D plotting of GRASS GIS 7 results, also to make them more consistent in size and view angles. So for m.nviz.image elevation_map=DEM -a mode=fine resolution_fine=1 ...
0
votes
2answers
106 views

How to add polygon height in QGIS or PostGIS?

Is there an easy way to set the height of polygons in QGIS or PostGIS? I am trying to visualize polygons by turning them into volumes (same shape at the base and roof, but with walls). I would then ...
6
votes
2answers
334 views

Clarification of the “25D” option in ogr2ogr

[EDIT: In my original post, I had received an error that was based on a typo, so I scrapped that part of the question, but left the questions that still apply.] In the ogr2ogr docs it says: -nlt ...
4
votes
2answers
452 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 ...
2
votes
0answers
78 views

Three-dimensional interpolation of temperature profiles using gstat in R?

I'm working on a problem in which I'd like to interpolate a set of oceanographic temperature profiles over a three-dimensional matrix of unsampled x, y, & z locations. The data to interpolate is ...
0
votes
1answer
58 views

file formats to represent georeferenced 3D data

I am looking for an overview of file formats that can store geo-referenced 3D geometries. There are no further requirements such as texture support, etc. I have found the following formats so far and ...
5
votes
2answers
252 views

Pictometry Accuracy and/or Alternative

I'm looking for some insights into the accuracy (x,y,z) of oblique imagery from Pictometry in terms of providing accurate measurements for property evaluation. Is the high cost of this product ...
1
vote
1answer
160 views

Where can I obtain 3D data for Singapore?

I am looking for providers of 3D maps/models of Singapore. This might be either from photogrammetry/laser techniques or based on a DEM + building footprints/landuse with a height attribute. Is any ...
2
votes
1answer
1k views

How to export a shapefile from ArcGIS 10 into Autodesk Ecotect?

I am trying to export a shapefile from ArcGIS 10 into Autodesk Ecotect Analysis 2011 for solar analysis. I have a shapefile with polygons, and the heights of buildings is stored in the attribute ...
1
vote
1answer
47 views

Can I define a transformation between 2D and 3D in Geotools?

I'm using Geotools, and I need to convert coordinates between 2D and 3D coordinate reference systems. I recognize that there's no universally-correct way to do this: 2D -> 3D means "making up" a Z ...
0
votes
0answers
43 views

Displaying 3D city model from PostGIS 3D backend

I know that openlayers doesnt support 3D yet. I heard about Kartograph has 3D features but Does Kartograph support reading data from backend database especially PostGIS? I would like to create a 3D ...
1
vote
1answer
54 views

Possible to store 3D features such as dome into geospatial database?

Is it possible to store 3D features such as dome into geospatial database such as PostGIS? I know that it can store x,y,z data, can such complex features be stored into database?
0
votes
1answer
27 views

Political world map texture?

What is correct name of texture and/or projection, which is suitable for 3D engines? I want to apply world map to 3D sphere, but a variety of images found by Google makes me thinks that some of them ...
0
votes
1answer
50 views

Simple georeferenced 3D data format for building models

I am looking for a simple georeferenced 3D-data format to store very simple building models. Each building should be represented as a number of poylgons, semantics do not matter. It would be ideal if ...
0
votes
0answers
35 views

How can I extrude a polygon “below” a base height?

I am creating some animations and short movies in ArcScene showing how a number of disparate datasets relate to one another. In one of these movies my "big finish" is to extrude a number of polygons ...