3D is an object that has three dimensions.

learn more… | top users | synonyms

1
vote
1answer
661 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 ...
1
vote
0answers
38 views

Error with qgis2threejs plug-in

I am currently endeavouring to use qgis2threejs to create a 3D visual using DSM and orthomosaic data captured using my unmanned aircraft system (UAS). Originally the plug-in seemed to work perfectly, ...
1
vote
0answers
14 views

TIFF, TFW and 3D Integration [duplicate]

I have a bunch of tiffs and their corresponding tfw. I want to compose all those images into one and use it as background on my 3d app. (3ds) for 3d model integration. There are almost 200 aerial ...
1
vote
1answer
31 views

3D rubber sheeting using ground control points

I have 3d lines that I would like to rubber sheet or rectify in 3D (including z rectification). I used ogr2ogr with -gcp, however all the vertex of a polyline were set to a single elevation, and since ...
1
vote
0answers
56 views

Calculating surface and lines in 3D projection in R

For my internship research I am trying to compare the surfacearea and length of geometric shapes and lines in one coordinate system to another. I have a SpatialPolygonDataFrame in the European equal ...
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 ...
1
vote
1answer
77 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 ...
1
vote
0answers
46 views

PostGIS 3D Extrude function

I selected buildings from OSM (which represents my city). I insterted a new column 'height' and I filled with a random number exactly number 2, so every building have 2metres altitude. Buildings are ...
1
vote
0answers
55 views

How to define Z dimension on table with PostGIS for import in TileMill?

I'm trying to reproduce the idea behind this blogpost from Mapbox, but with other data, for example the ne_10m_populated_places_simple dataset from Natural Earth. By adding a z-dimension to the data ...
1
vote
0answers
64 views

Split 3D line feature at vertices based on slope change

I've already asked a question about this subject, but now I think I'm almost getting to the point. I have to split roads in ramps to calculate LS factor (RUSLE - soil erosion) These are the steps ...
1
vote
0answers
141 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. ...
1
vote
0answers
82 views

ArcMap vertex problem for Z-value

I have an Oracle Spatial dataset with z-coords. I can edit the dataset in ArcMap however the z-values are always rounded to the nearest integer. Why does ArcMap round the z-values? Regards, Pieter ...
1
vote
2answers
429 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
193 views

Software program (or spreadsheet calculations) to find Borehole Deviation?

I was given a bunch of surveyed borehole data (azimuth, depth, dip, geology, etc) and am required to calculate a deviation variable. Besides querying the data and averaging the surveyed borehole ...
1
vote
0answers
26 views

System Requirements for 3d GIS & 3d Modelling [duplicate]

I'm looking for system (hardwares) required for view, edit & analyse 3d GIS & modelling data. And what is the decent monitor size should be ? single/Dual screens ? Modern systems comes with ...
1
vote
0answers
61 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 ...
1
vote
1answer
235 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 ...
1
vote
0answers
127 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, ...
1
vote
0answers
148 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. ...
1
vote
0answers
210 views

Layer 3D to Feature Class Empty Output

I'm trying to build 3D buildings from 2D footprints. I extrude by the building heights, and input the surface by editing the properties. From here I use the Layer 3D to Feature Class tool to convert ...
1
vote
2answers
553 views

Making 3D landscape area appear in Vectorworks 2011

I am using Vectorworks 2011 to build a site plan. I would like to include a 3D view using a "Landscape Area" to display a block of vegetation. I have drawn the shape of the area, set the 3D view to ...
0
votes
2answers
205 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 ...
0
votes
2answers
149 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 ...
0
votes
1answer
58 views

Creating 3D Buildings for Google Earth?

I want to learn creating real 3D buildings to use them for google earth. What is the best software for that? And What are the best books/tutorials to start with. Thanks
0
votes
1answer
26 views

What is the difference between `Area_2D`, `Area_3D`, and `Volume` in surface volume calculation? [duplicate]

I want to know the meaning of output text files of surface volume dialog box. For example, the file contains headers and numbers as below: Dataset, Plane_Height, Reference, Z_Factor, Area_2D, ...
0
votes
1answer
269 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 ...
0
votes
1answer
52 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 ...
0
votes
1answer
89 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 ...
0
votes
1answer
37 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
244 views

Plotting 3D Data using Python

I have a Uniform Grid of 1KMx1KM squares as a shapefile with population data in each grid in a specific column as an integer. I would like to extrude each polygon based on the population and export ...
0
votes
1answer
117 views

create POV-Ray image from DEM-file in grass

I am working on r.out.pov Tool of grass 6.4 creating a POV-ray(beautiful 3D) image from an elevation raster. You can see this link for more information about 3D analysis of GRASS. r.out.pov manual ...
0
votes
1answer
204 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 ...
0
votes
1answer
99 views

Problem with interpolation of 3D points in GRASS

I have a sample of 3D points (x,y,z) with tepmerature attribute. I can import my data as a 3D vector map. I want to create a volume of voxels by using v.vol.rst. When I use this module, this error ...
0
votes
1answer
344 views

Creating 3D lines from 3D points

Can you tell me the procedure in ArcGIS 9.3 to create 3D lines which connect the 3D points using the elevation of the points. For example, if pointA has 20 elevation and pointB has 30, then the line ...
0
votes
2answers
2k views

How to convert Shapefiles to 3D DXF?

I'm using QGIS version 1.8.0-Lisboa and I'm trying to convert a vector line file and it's not working. I right click on the layer>Save as>Autocad file>DXF. After that I try to open the output file in ...
0
votes
2answers
118 views

Using 3D Raster Domain to get polygon of raster - but stripping Z and M values

I'm trying to convert a number of large, floating point rasters into polygons so I can view overlaps etc. I've been using 3D Raster Domain sucessfully to do this. The only problem is that the polygons ...
0
votes
0answers
11 views

QGIS - Creating a regular grid that follows contours/elevation/altitude?

I am hoping that someone may be able to help please? I am currently using QGIS to try and prepare a series of equally spaced sampling points within various individual NVC vectors in the UK. ...
0
votes
0answers
22 views

computing the volume of a cave

I did a cave survey and now I have a dxf file 3d. It's composed by 8 layers: polygonal points width contour width height contour height stations depth I would like to make a volume and change its ...
0
votes
0answers
45 views

Creating a 3d terrain model using a DEM raster file

i have a DEM Raster file and i would like to create a 3D Terrain Model using ArcScene. Is this possible, if yes, how? Thanks.
0
votes
0answers
9 views

how to use the overview control of openlayers in other platform like skyline or others?

As the title said,is there a possible way to use the overview control of openlayers in other platform like skyline or citymaker or other 3Dplatform? What i need now is that i want to make an overview ...
0
votes
1answer
146 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: ...
0
votes
1answer
57 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 ...
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.
0
votes
1answer
43 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 ...
0
votes
0answers
62 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 ...
0
votes
0answers
64 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 ...
0
votes
1answer
67 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
171 views

How to draw 3d objects from .kml file on gwt-openlayers map?

I tried to run gwt-openlayers KML example on my PC but failed to see KML layer. I set protocolOptions.setUrl("http://dev.openlayers.org/releases/OpenLayers-2.13.1/examples/kml/lines.kml"); instead ...
0
votes
0answers
49 views

Topology rules for a 3d network

I am currently writing a spec to which people may end up using to guide the digitization of a large 3d network (exterior pedestrian network + building interiors). In 2d network drawing, it seems to ...
0
votes
1answer
57 views

Raster to Surface

I have a raster and I have been asked to modify some pixel values in it. Is there an open source way to do this? I would guess that I have to create a 3d surface, then manipulate the surface, then ...