3D is an object that has three dimensions.

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6
votes
0answers
398 views

Indoor positioning system hardware [closed]

I'm a software developer, dont know much about the hardware specifications and dont know where to start. (Even not sure is that the right stackexchange I should ask this question.) So, I want to know ...
1
vote
1answer
664 views

VRML export issue ArcScene

when I try to export simple Tins (or documents which contain Tins) from my ArcScene to .wrl the export fails. Please see my example: I have the following table (xlsx): X Y hoehe 28 -2 0 -2 ...
1
vote
0answers
58 views

3D tool for a visual analysis

Given a 3D mesh I need to visualize and analyze properties and elements generated from the object such as: tensors coplanar/similar elements ( coplanar faces, aligned vertices, etc etc, 3D geometry ...
4
votes
3answers
327 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 ...
17
votes
3answers
593 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, ...
2
votes
1answer
158 views

Making a subsurface TIN model

I had been very glad if any of you have time to help me. I am a student and currently writing a thesis. In this paper I will create a 3D model of a glacier, where I will show the internal structures ...
2
votes
1answer
136 views

3D Barriers, ArcGIS Network Analyst

I am trying to implement 3D barriers from a feature class into a network using a model, but I can't seem to get the resulting barrier to appear on the proper three dimensional plane. The feature class ...
2
votes
2answers
408 views

Options for displaying 3D data using ESRI web APIs [duplicate]

I've been looking through the documentation of the various ESRI web APIs to see if there is any support for displaying 3D data, but haven't found anything useful. Is there any support for this - or do ...
1
vote
1answer
311 views

Why ignores Google Earth the gx:altitudeOffset in KML files?

I am currently writing software that creates 3D polylines and outputs these in KML format. According to the official documentation it is possible to define an altitude offset via gx:altitudeOffset to ...
3
votes
1answer
197 views

Create an animation that rotates around an central axis

I am looking to create an animation of a 3D model. I want the model to be the central object in the animation, so rotating around the model, always looking at the model. I am wondering what is the ...
4
votes
1answer
433 views

What do I need to create 3D model of real terrain?

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 ...
1
vote
0answers
125 views

create a map from scratch

I am a newbie in GIS, so be indulgent if my question sounds stupid! 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, ...
5
votes
1answer
255 views

How do I georeference a ski map?

I have a map of a mountainous landscape, http://skimap.org/data/989/60/1218033025.jpg. It contains a number of known points, the lat-longs of which can be easily found out using google maps. I wish ...
4
votes
1answer
316 views

How can I Enable Google Earth 3D features in QGIS?

I want to ask if there is any plugin or any other way where I can use Google Earth features in QGIS. When I'm saying Google Earth features I mean to be able to see roads, towns, etc and to be able to ...
7
votes
2answers
246 views

How do you treat partial 3d features in PostGIS?

We have features from survey data that contain partial 3d information. The most common example would be a 2D LineString representing a road, that contains elevation information in certain points ...
3
votes
1answer
901 views

Can I create a 3D model in QGIS or is there some model for 3D city model?

Can I create a 3D model in QGIS or is there some model for 3D city models? I need these information for my project.
7
votes
5answers
544 views

What are the main fields of applications of 3D GIS?

I'm doing a scholary research on 3D GIS but i have some problems in finding where they are used. Does anyone know of any real life examples where 3D GIS has been adopted?
2
votes
1answer
266 views

NEAR_3D function without the need for 3D Analyst, Arcpy

I am looking for a python script which would do similar as the ArcGIS 3D Analyst NEAR_3D function. Basically I would like to programatically in python find nearest points of one point feature class ...
2
votes
1answer
197 views

3d terrain from data in postgres

I am quite new to arcgis and I would like to create a 3d terrain. Now I have a postgresSQL table containing a list of points with their geometry data and the Z value for each point. What I would ...
4
votes
0answers
281 views

How to convert a set of points to a solid object?

I have a data generated as the output of some numerical processes. I need them to be converted into 3D solid objects (as CAD solid format) to make them importable for some particular numerical ...
10
votes
3answers
771 views

How to properly Drape vectors over a DEM?

I have a DEM of my study area, and the streams in it. Whenever I add both to ArcScene, and drape the vectors over the DEM, some of the vectors disappear from over the surface, and are visible under ...
4
votes
1answer
444 views

Is there a way to visualize a 3D full/solid body (like a full layer) in ArcScene

I am trying to present layer and simulated layer (how it decreased in a year, for example) in ArcScene, but showing two layers one on each other with a slight difference (like max 30 cm.) does not ...
2
votes
1answer
178 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 ...
2
votes
1answer
418 views

How to find the closest Edge from a Line

Currently I'm working on a basic 3D model viewer in MATLAB, which can import .OBJ files (modeled in e.g. Blender). The purpose of this viewer is to test different subdivision schemes (like ...
7
votes
4answers
463 views

Which ArcGIS product gives full 3D terrain navigation and (flight) simulation?

I looked at the ArcGIS ESRI website and find that 100% of the screenshots depicts a 2D map with at most relief shading. Is there any product ArcGIS or not that gives real 3D terrain visualisation ...
28
votes
1answer
7k views

How to find the center of geometry of an object?

Well it might be a simple question. Given a set of 2D or 3D points, the question is: How to find the center of geometry of an object? According to the following figure, the center of geometry ...
6
votes
1answer
211 views

What's a robust strategy for displaying 3D map data for navigation?

3D map data, specifically the kind you see on GPS units, or more recently on smart phones, almost always features a 'HUD' like view, which I'm trying to implement in an application of mine. I have ...
2
votes
0answers
438 views

Visualization libraries for rendering 3D GIS world on iOS/Android

Are there any good 3D libraries/frameworks for rendering 3D worlds in geospatial coordinates on mobile platforms? Use case: I have some known 3D geospatial features (eg. buildings) with their ...
5
votes
1answer
519 views

How do I cast shadows from 3D Objects in ArcScene?

I would like to cast shadows from my 3D objects in ArcScene onto the surface and other objects. (Much like I can in SketchUp). Is it possible? If so how?
3
votes
1answer
2k views

How to draw a cross section in QGIS

Given my enthusiasm for QGIS, does anyone have a simple workflow for drawing cross sections of earth features? My thing is that QGIS is being used to present the plan view, but we have a little ...
1
vote
0answers
142 views

Data source for 3D buildings (germany)

I'm searching for a data base or webservice, that provides buildings at a level of detail (LOD) of cuboid (length,width,height) or roof, corners, etc or better. The area should cover germany. ...
3
votes
2answers
308 views

Invoke PostGIS functions outside of the database? Need to force 3D in GeoDjango

I'm looking to ensure that all geometries saved to the database are three-dimensional. It's easy enough to do with a call to the database, select ST_Force_3D( ST_GeomFromText( blah blah ) ) ...but ...
2
votes
1answer
280 views

Conversion of ASTER GDEM data for CFD Analysis

I need to do a computational fluid dynamics (CFD) analysis of wind over a large area of land. I have obtained the necessary tiles from the ASTER GDEM data set (in .tif format) and was wondering how I ...
4
votes
1answer
84 views

Rasterise heights from a 3D linestring

I have a 3D network of streams represented using linestrings with Z-coordinates. I would like to rasterise this feature, where the raster values represent the linearly interpolated Z-values between 3D ...
5
votes
1answer
2k views

Features to 3D from 2D in QGIS

Is there a way to convert 2D features to "3D" features in QGIS? I know there is a way to do this in ArcMap by using an attribute value in the attribute table, but I am looking to do this with ...
5
votes
2answers
867 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.
2
votes
1answer
429 views

PostGIS - table with 3d points with fast ordering by distance

I am pretty new to PostGIS and I am trying to solve the following problem. I need a table with 3D points (x,y,z) that will contain around 1-10million points. I want to be able to efficiently ask the ...
5
votes
1answer
1k views

ESRI 3D Analyst: Which Graphics card?

in order to make the most of ESRI´s 3D analyst I would like to order an appropriate graphics card. I have been recommended the AMD FirePro V5900 2 GB by someone who doesn´t know much about GIS hence ...
8
votes
7answers
19k views

How can I create profile cross-sections in ArcGIS 10?

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
3answers
504 views

Point to Raster Issues

I am having some trouble with something fairly simple.. I am creating a 3D subsoil model for display in arcscene - i can get it displayed nicely as points but in order for the model to be easier to ...
5
votes
2answers
253 views

3D snapping in open source platforms

I'm looking for tools and extensions in open source platforms (gvSIG, QGIS, uDig, etc) that allows 3D snapping. In the last years, most of the projects my company is working on required the editing ...
2
votes
3answers
2k views

Display 3d building using OpenLayers

Is there any way to display a 3d building model as a layer under OpenLayers ? i have the building models drawn using Google sketchup , is that useful ?
2
votes
0answers
80 views

Determine which points fall within a 3D polygon and export this subset to a flat file

I am working in ArcMap 10 and will have a 3D representation of a zone of transmission. I would like to determine which GPS points fall within this polygon and then export this subset out to a flat ...
12
votes
1answer
969 views

Displaying cross-sections on a web page

I'm looking for inspiration and possible tools on how to display cross-sections on a (dynamic) webpage. More specifically I have to show on these cross-sections how underground pipelines are located ...
1
vote
1answer
638 views

GRASS v.out.dxf 3D into AutoCAD

So continuing with my last question (Create 3D dxf with OGR) I have decided to give the GRASS option a go. I have imported my polylines into GRASS using v.in.ogr and converted them to 3D using ...
11
votes
2answers
299 views

Are there any 3D GIS which exploit consumer level 3D HDTVs?

My company is moving into a new building and we will be purchasing a 65" or greater HDTV for the conference room. I am interested to know if there are "3D" GIS applications which currently exploit ...
26
votes
8answers
2k views

When is a 3D Visualisation in GIS Useful?

I can currently only think of two cases: to visualise potential changes in a landscape, such as the effect of adding windfarms, or the addition of a new building to an urban area. However both these ...
2
votes
1answer
335 views

Possible to use Google Earth to generate “skyline” planes?

I was really interested to notice that my city appears to have gotten the 3D Buildings treatment on Google Earth. I am trying to figure out how I might these 3D buildings to generate 'skylines' for a ...
3
votes
0answers
369 views

Can I intersect (slice) a multipatch geometry and obtain the perimeter line of the intersection as a result?

Can I intersect (slice) a multipatch geometry with a vertical polygon (or an extruded line) to obtain the perimeter line of the intersection? (or better yet a polygon) I am creating fairly complex ...
5
votes
1answer
1k views

Render the PostGIS OSM data in 3d?

I wonder is there any open-source application that can query a PostGIS-enabled database and render the resulting OSM map in 3d. The only thing I have found so far is Navit, but it renders only from ...