Questions related to GIS objects that have three dimensions.

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5
votes
0answers
378 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 ...
4
votes
0answers
67 views

Why different transformation behaviour ArcGIS Pro 2D/3D layers?

I am working with ArcGIS Pro and have noticed a strange difference between the co-ordinate transformation of 2D and 3D layers. Here are my transformation settings: I have the same layer ...
3
votes
0answers
47 views

Splitting 3D Spheres with 3D Walls (lines converted to 3D) in ArcGIS for Desktop?

I am using ArcGIS 10.3 for Desktop. I would like to split spheres (created from 3D buffers) in half using 3D fences/walls (lines converted to 3D). Both datasets are multipatches. The purpose of ...
3
votes
0answers
61 views

3D interpolating

Our final year project domain is soil contamination modeling. We collected soil samples at the depths of 0.3 cm ,0.5cm , 1cm , 1.5 cm in about 25 locations. We considered 8 contaminants- p h, sodium, ...
3
votes
0answers
243 views

How to set Vertical Coordinate system when creating a 3D shapefile?

I'm working with GDAL v1.11 and am seeing the vertical CS stripped when exporting a 3D shapefile (from oracle spatial). This is the command I'm running: ogr2ogr -f "ESRI Shapefile" B_POINT.shp ...
3
votes
0answers
220 views

How to set up a base station without known coordinates

I am new to surveying, but need to set up a Topcon controller with Pocket 3-D to run 2 receivers and a grader running off the base receiver for my new job. It sounds stupid, because I can't seem to ...
3
votes
0answers
51 views

How can ASTER elevation data be converted to a CAD model

I am trying to convert ASTER elevation data to a 3D CAD model using only opensource software. I have tried using different file formats but I have been unsuccessful. I use QGIS for my GIS work and ...
3
votes
0answers
87 views

Questions about SRTM , .hgt format and the sea level/coastline

What a nice place here ! The questions/answers system is very elegant. I have read and get some useful informations allowing me to write a little .hgt reader... I am working on C.G.I and create 3d ...
3
votes
0answers
218 views

Spatial Data with Unity

I was wondering if anyone has used spatial data as an input source to build 3D environments and interactive applications with Unity? The geospatial 3D world is very young, and some what immature, ...
3
votes
0answers
2k 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 ...
3
votes
0answers
232 views

Incorporating known GPS/INS data to automatically produce geo-registered 3D models

I am trying to reconstruct a 3D building model from 2D video frames using an open-source Structure-From-Motion(SFM) software (Bundler). The final reconstructed 3D model will be in Cartesian ...
3
votes
0answers
521 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 ...
3
votes
0answers
167 views

Three Dimensional Routing Input Location Errors and Questions, ArcGIS10

I am having a bit of a problem with my three dimensional route solving. I am creating an interior building network, and ideally would be routing from room to room. I created a line feature class, with ...
2
votes
0answers
33 views

ArcGIS Pro 3D rasters?

I am trying to use ArcGIS Pro to create a 3D scene using an elevation surface (.tif) generated from drone imagery. The tif is projected and contains the elevation information, but I cannot get ArcGIS ...
2
votes
0answers
31 views

QGIS2threejs scale bar and north arrow

I am wondering is it possible to have scale bar and north arrow in 3D view when viewing in browser and also when saving image.
2
votes
0answers
45 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 ...
2
votes
0answers
84 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
0answers
72 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
265 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 ...
2
votes
0answers
516 views

3D geological model from cross sections, preferably using Open Source software

I work with engineering geology, and my workflow includes making many cross sections of a given site, with data from maps, fieldwork (outcrops) and boreholes. What I'm looking for is a way of taking ...
2
votes
0answers
40 views

3D topographic progress compensation by the least squares method

I'm looking for an explanation of the least squares method used in the case of a correction of 3D point network. We have reference points with known coordinates XYZ. We calculate intermediate points ...
2
votes
0answers
149 views

3D marker symbol export problem (ArcGIS 10.2)

I am trying to create a webscene. I have a TIN and a point layer that is 3d enabled (point z). I added a 3d symbol marker to the point layer in ArcScene . When I use the "export to 3d web scene" ...
2
votes
0answers
247 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.
2
votes
0answers
198 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 ...
2
votes
0answers
205 views

How to display images as cross sections in 3d

I want to display a base map and several vertical cross sections in 3D. The base map image is easy to rectify as a geotiff. How can I also display the cross sections? The cross sections are at ...
2
votes
0answers
147 views

How can I create planar slices of a 3D object to quantify voids?

We are trying to quantify the void space in a 3D object, very similar to measuring the holes in cube of swiss cheese. I need to measure cross sectional areas and study the shape of the voids and we ...
2
votes
0answers
424 views

3D features (Polyline, Polygon) intersection library

For my research I am looking for a (python) library to get the intersection of some 3D features. The features can be Polygons or Polylines. Mostly I need to intersect a plane with my features and get ...
2
votes
0answers
97 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 ...
2
votes
0answers
245 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
0answers
16 views

How to extrude a polygon in a slope in CityEngine

I am going to extrude polygons in slope using CityEngine and would like to have horizontal roofs. As you know, when you extrude a polygon in slope, a sloped roof is generated. But in reality buildings ...
1
vote
0answers
10 views

Draping surface on custom data rather than built in elevation data for 3d web scene in CityEngine webviewer app?

When I publish a web scene from ArcGIS Pro to ArcGIS Online for use in a cityengine 3d web scene, all of my surfaces that I have custom elevations assigned to come out flat. As far as I can tell the ...
1
vote
0answers
23 views

PostGIS: intersection of a MultipolygonZ and a floating point raster

I am trying to isolate the pixels in a floating point raster (loaded in PostGIS) that intersect my MultipolygonZ table (also loaded in PostGIS) and whose values are less than or equal to the z values ...
1
vote
0answers
45 views

Create profile graph over multiple rasters (ArcGIS 3D Analyst)

When having a raster which represents an array of values, for instance, elevation, I can generate a profile graph over a line I draw using the 3D Analyst toolbar. A sample graph: When generating a ...
1
vote
0answers
59 views

Can Google Earth be used to display underground 3D structures?

Trying to make it easy for a non GIS savy person to view the 3D data I produced in ArcScene. I cant seem to get Google Earth to view underground/below the standard imagery.
1
vote
0answers
21 views

Python error using Vterrain in qgis

Traceback (most recent call last): File "C:/Users/Haimwant/.qgis2/python/plugins\VTerrain\VTerrain.py", line 409, in run os.spawnl(os.P_NOWAIT, directory + "Enviro", ...
1
vote
0answers
48 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 ...
1
vote
0answers
37 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
54 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 ...
1
vote
0answers
33 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 ...
1
vote
0answers
111 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
47 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 ...
1
vote
0answers
59 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, ...
1
vote
0answers
31 views

How to load VRML data into CityEngine

I can't see whether Esri CityEngine supports VRML files directly, or how to load them if they're not supported (the online materials are more marketing-focussed than technical). Is there a ...
1
vote
0answers
129 views

GIS Wireframe into SketchUp

There used to be a plugin that allowed GIS data (.shp file) to be exported and then opened in SketchUp. This plugin no longer exists. I have wireframe data of buildings that is 3D in ArcGIS that I ...
1
vote
0answers
54 views

Trajectory / ballistics

I'm trying to calculate if a canon will be able to shoot over a height in the terrain. lets saytThe canon have to be 15'000-18'000m from the target, and the impact degrees have to be over 30 ...
1
vote
0answers
173 views

How to create 3D globe images highlighting a specific country or 2D country map with capital?

I am building an Anki flashcard set that should contain country flags, names and (ideally) a 3D globe with the country outlined, as can be seen on Wikipedia. I've already completed the part that ...
1
vote
0answers
293 views

Displaying Trees in Arc Scene

I'm new to ArcScene. I'm using a historic map, in arcmap, to draw old roads, garden plots and tree locations. My trees are in a point shapefile in ArcMap, I brought them into ArcScene and I'm trying ...
1
vote
0answers
103 views

Convert exported ArcGIS .dwg to 3D rendering on AutoCAD 2013?

We're working on a bathymetry mapping project of our reservoir, digitized as it was built in 1977. I have a polyline .shp for contours and polygon .shp for area between contours with fields including ...
1
vote
0answers
109 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
157 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 ...