3D is an object that has three dimensions.

learn more… | top users | synonyms

28
votes
4answers
8k views

How to find the minimum-area-rectangle for given points?

The following is another problem that I am working on it these days. As you see in the figure, (BTW, I tried to make it self-presenter) the question is: How to find the minimum-area-rectangle (MAR) ...
17
votes
3answers
672 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, ...
21
votes
7answers
5k views

What are my options for 3D web Maps?

I wish to have a Online 3D Map, which would show my Data, i.e both Raster and Vector, draped on a DEM that I have. Due to the requirements of using my own DEM & Raster data, Google Earth API is ...
30
votes
1answer
10k 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 ...
7
votes
1answer
5k views

Is there are QGIS plugin to allow the 3d visualisation of geological borehole data similar to the 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 ...
10
votes
5answers
4k views

How can a 3D model of a building be displayed in a web-browser?

I would like to try to show a proposed building in a web-browser such that the user can interact with it in a way similar to google maps streetview. Is it possible to do this, in any platform? I can ...
8
votes
5answers
20k 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 ...
6
votes
4answers
2k views

Is it possible to create 3D dxf with OGR?

Does anyone know if it's possible to create a 3D dxf with OGR. I would like to assign our contour lines a z value and export them to dxf for some cad work. PS I know FME can do this, however I would ...
12
votes
2answers
7k views

How can I sucessfully import 3D surface and features from ArcGIS 10 into Sketchup 8?

What are the steps required to successfully export an entire 3D model (composed of TIN surfaces, 3D polygons, 3D polylines and 3D points) from ArcGIS 10 to Sketchup 8? Preferably, I would like the ...
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 ...
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 ...
18
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 ...
9
votes
3answers
1k 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 ...
5
votes
3answers
2k views

3D visualisation with open source GIS software [closed]

I'm searching for QGIS (or other open source GIS software) tools that can analyse XYZ data. Also I'm interested to hear about if anyone have migrated to non commercial software regarding geological ...
10
votes
3answers
1k 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 ...
8
votes
1answer
10k views

creating a dem from contours

I have a large set of contours that I received broken down into several different subsets. I have merged most of the subsets together creating a larger set of contours in three different files. I have ...
1
vote
2answers
364 views

Develop 3D buildings with roof structure from raw data

I recently received a task to develop 3D buildings with roof structure. All I have now is satellite images and aerial photographs covering the entire urban area. After reading some previous methods, ...
1
vote
1answer
809 views

How to create a 3D shapefile from a raster?

I´m trying to make a 3D shapefile from a raster feature but not working. Tried already to run the command in OSGeo4W but nothing happen. I'm using the Qgis 1.8.0 Lisboa. The purpose is to get a final ...
2
votes
1answer
223 views

Creating 3D terrain from point data in PostgreSQL?

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 ...
35
votes
4answers
7k views

How to migrate from ArcGIS for Desktop to QGIS?

Our lab has about 10 projects in ArcGIS 9 (a couple are made in ArcGIS 10) that includes the following in each: A georeferenced (WGS1984 geographical projection) raster seafloor image, representing ...
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 ...
13
votes
3answers
1k views

Visualization of 3D shapefiles with Mapserver and Postgis

I'm wondering is there a way to visualize 3d data with mapserver? 3D .shp files are in postgis database, and I already connected mapserver to database, but with simple layer in mapfile.
12
votes
1answer
1k 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 ...
8
votes
2answers
3k views

Can I create, union and intersect 3D multipatch features using 3D Analyst extension (ArcGIS 10)?

I'm on ArcGIS 10. According to all the documentation I've read, 3D Analyst should be able to do what I am trying to get it to do, but I am running into problem after problem and I'm almost ready to ...
11
votes
2answers
305 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 ...
8
votes
1answer
1k views

PostGIS 3D in Action

I was wondering if there is a website that showcases Openlayers and PostGIS 3D in Action
3
votes
2answers
1k views

Georeferenced 3D Model Import

How can we open a 3D MAX File(3D Building model with exterior and interior elements)in Autodesk Infrastructure/LandXplorer or ESRI CityEngine? How can we georeference a 3D vector building model?
9
votes
4answers
611 views

How to represent floors in a building

Is there any way to represent floors in a building using GIS? (Also, it's stupid that I have to use existing tags cos none suit my question so I had to choose one at random.)
5
votes
1answer
283 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 ...
2
votes
0answers
1k views

Simulate flood to assess Asset inundation footprints

I am trying to evaluate a number of flood gauges to assess at what levels of river height different flood risks would need to be issued. The gauges are currently set to warn of flood a couple of ...
1
vote
3answers
805 views

export 3D data dxf file

I'm trying to export a DXF file from Qgis1.8.0 Lisboa and can not have a 3Dfile in Autocad! Or micristation. It results always in 2D file. How can I export height data from a shape file in Qgis? ...
10
votes
5answers
580 views

Where can I find a high quality real globe of a decent size without axis?

I'm trying to find a physical globe of a high map quality that doesn't have any axis or bearings as the axis mounted on standard desk globes completely obscures the arctic regions. High-quality map ...
10
votes
2answers
1k views

Which Windows GIS editors support the creation of 3D shapefiles besides ArcGIS with 3D Analyst?

I need to find and easy and affordable way to generate 3D linear shapefiles in Windows so one of our users can inspect our tool. We incorrectly assumed that he had 3D shapefile source data available ...
9
votes
3answers
1k views

What software to use as an all-around solution for mining GIS?

My employer wants me to look into constructing geology maps, modeling 3D subsurface geological formations, producing geological cross sections and other mining related products from various drill hole ...
7
votes
2answers
824 views

DXF attribute to z value

We have been given a DXF that contains a Elevation attribute but we would like to generate a 3D DXF. I know I can generate a 3D dxf from a shapefile using: ogr2ogr -f "DXF" out.dxf in.shp -zfield ...
4
votes
1answer
254 views

Using projections to obtain perspective views

I understand that a perspective view is essentially a type of projection. Is it possible to create projection definitions for a typical GIS system that will mimic a perspective view from a particular ...
4
votes
2answers
420 views

google earth profile used in mashup or flex

I really like the way google earth profile works, 1. mouse over line, right click, select profile 2. slide the mouse over the created 3d profile an dsee where that is on the map. Has anyone an idea ...
3
votes
2answers
591 views

Is it possible to give 2d contours a Z-height from their attribute table in QGIS? (Or ArcGIS?)

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 ...
3
votes
2answers
4k views

KML (KMZ) generated from ArcGIS 10 open in Google Earth but fail to import into SketchUp 8

So i finally figured out how to import TIN surfaces from ArcGIS 10 into SketchUp 8. To fully replicate the functionality of the legacy ArcGIS SketchUp 6 Extension I would also like to be able to ...
2
votes
1answer
283 views

How to import a 3D DXF file into QGIS with z information as attribute value?

I have a dxf file of 3d contours. after import it does have only layer,x,y attribute and doesn't have Z attribute. how can I provide Z attribute to create a TIN file.
2
votes
2answers
711 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 ...
9
votes
4answers
275 views

Is there a standardized or “most used” dummy Z value?

Creating and importing both 2D and 3D data, I have many times encountered the situation where I have no Z value for a coordinate set, that the value of a Z coordinate seems out of range (like -99, ...
8
votes
1answer
347 views

Is it possible to add photo-realistic clouds in ArcGlobe animations?

This question asked about the best software to produce professional fly-through animations, and included a link to a nice video of the Grand Canyon. That video includes photo-realistic clouds in the ...
6
votes
1answer
632 views

How do I convert a .dxf to a .shp containing a field with height information in QGIS?

I received two .dxf for my project that represent my area of interest. One of them contains buildings, the other one terrain elevation. They both are 3D. I can convert them to shapefiles successfully ...
6
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 ...
6
votes
2answers
352 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 ...
5
votes
2answers
280 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 ...
5
votes
1answer
570 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?
5
votes
3answers
940 views

getting from a DEM to points that could be used for a TIN

I have a DEM, and would like to create a set of points that I can use to make a mesh for a 3d modeling program, such as Maya, Blender, or SketchUp. If I were to make a TIN from a DEM in ArcGIS, ArcGIS ...
4
votes
0answers
496 views

How to digitize directional drilholes from scanned vertical sections? [duplicate]

I need an advice how to do this. Normally, I either receive a file containing drill holes or at least data with xy position, direction, depths and attributes. I then use this data for further ...