Questions related to GIS objects that have three dimensions.

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0
votes
1answer
82 views

How to find the height information from LiDAR point cloud data [duplicate]

I need to find the biophysical parameters(biomass) from the LiDAR point cloud data. For that I need the height of the trees from the data. Currently I am having the general height with respect to sea ...
1
vote
0answers
43 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 ...
4
votes
1answer
736 views

How to compute average slope and area-weighted average slope?

I am learning GIS for use in hydrologic analysis. Related to computation of overland flow there are two types of slope that I would like to be able to obtain from GIS. The first is average slope for ...
3
votes
1answer
123 views

Looking for more realistic 3D terrain renderer than ESRI Arcscene

I am looking for simple suggestions of software packages that go beyond what ESRI ArcScene can offer. I want to create 3D terrain visualisations, particularly of orthophotos draped over high quality ...
1
vote
1answer
244 views

Extruding a 3D stack of polygons on top of a map, e.g. with KML

I have data for the composition of rock layers in several polygons on earth. I would like to plot a stacked chart of the rock layers, colored based on layer metadata. Here's a mockup, where rock ...
4
votes
3answers
723 views

3d vector and geometry operations in open-source GIS

There is some really good open-source software available to work with 2D vectors. For example QGIS has operations like buffer / clip / dissolve / select by location / join attributes by location... ...
3
votes
2answers
519 views

Modelling stream in 3D based on known depths across it using ArcGIS Desktop?

I have an excel spreadsheet that contains the elevations across the profile of a stream. I was wondering how to model this in 3-d. Basically there are 6 monitoring stations that are within a stream. ...
3
votes
3answers
909 views

ArcGIS Surface Length Tool equivalent in FME?

I am trying to calculate the 3D length of a line. I currently have a rather complex and cumbersome model built in ArcGIS ModelBuilder that uses a tool called "Surface Length". I was wondering if ...
1
vote
2answers
60 views

Calculate Z Median from 3d line?

How does one calculate the median value of Z from a 3D line? The Add Surface Information tool in 3D Analyst only does Min,Max and Mean (average), and requires a surface model. (In this case I have ...
2
votes
1answer
79 views

Mapping out 3D points with QGIS2threejs

I have some points I would like to map out in 3D. The points were gotten from a GPS module athat was attached to a Raspberry Pi. This is the settings I used before starting qgis2threejs: This was ...
0
votes
0answers
15 views

Arrangement of vectors and matrix in text file?

My ASCII file has a vector of latitudes, and the indices of those latitude values tie latitude values to the data sharing the same index. That is, if given: latitude[x=0,1,2,3] = 10, 20, 30, 40 ...
0
votes
2answers
790 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 ...
1
vote
0answers
57 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
20 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", ...
0
votes
0answers
49 views

Help with Extruding and Heights in 3D Analyst using ArcScene

I have never worked with 3D Analyst before. I am trying to work with well data. The data has a well depth and a casing depth...for example 97 feet well depth and 67 feet casing depth. End result is ...
2
votes
1answer
74 views

Visualize PostGIS 3D line geometry [closed]

I have PostGIS table with 2 geometries ( "GEOMETRY(MULTILINESTRINGZ)" and "GEOMETRY(LINESTRINGZ)" ). There are lines made just from 2 points - XY are WGS and both of them have random elevation Z (I ...
2
votes
1answer
159 views

GeoJSON: PolyhedralSurface geometry type not supported

I am trying to make a 3D web application which should be able to render 3D buildings (I will be using Cesium, but that is not that important for now). I basically have a database consisting of the 2D ...
1
vote
1answer
72 views

How to add 3d Breaklines to a raster in Arcgis desktop?

I have prepared some breaklines from surveyed points. I want to modify a raster which has already been prepared for the area of interest based on these new breaklines.How can I do this in Arcgis ...
0
votes
1answer
45 views

Loading Scene from ID into ArcGIS JavaScript API 4 Beta: “SyntaxError: Unexpected token ILLEGAL”

I have created a city engine web scene,and I am trying to display the 3d-visualisation view on sceneview by using the portal Item Id of my webscene. But I am getting "SyntaxError: Unexpected token ...
2
votes
1answer
182 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, ...
3
votes
2answers
326 views

Qgis2Threejs returns empty page

When i try to make 3D scene from DEM with Qgis2threejs it creates a empty html page. I also try to make 3D thematic map from shapefile with the same result. I have also check my browser and it ...
1
vote
1answer
195 views

Cesium JS Line Length

Is there a method to return the length of a Cesium JS polyline, in real-world units? For example, if I create a polyline: var orangeOutlined = viewer.entities.add({ name : 'Orange line with ...
-3
votes
2answers
105 views

Creating 3D polyline in ArcGIS for Desktop?

I have a csv file containing a breakline points' coordinates and their elevation. How can I create a 3d polyline from these points? The CSV file looks like this: X Y z ...
0
votes
1answer
337 views

Issue with Cesium Terrain Provider

Even after adding blank terrain files at the specific directories : 0/1/ and 0/0/, I still get the error message and a blank globe. This is not an issue with CORS. I am using http-server (node) to ...
7
votes
1answer
155 views

Georeference raster in non horizontal plane

We have raster data which is generated from (vertical) walls. We would like to keep this data in a postgis database and have the spatial reference encoded "the most accurate way". Currently, they are ...
1
vote
1answer
56 views

what is result from cut fill operation?

A calculate volume of lake from rasters with cut fill tools. I got a result and i dont know what is right result. In the table are two collums COUNT and VOLUME maybe i have to count multiply volume ...
8
votes
6answers
1k 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?
0
votes
1answer
48 views

3D map with OSM2World

I want to create a 3d map and have found the osm2world converter. But i do not understand whether I can use it to convert the whole world map from 2d to 3d, for example on 17th and 18th zoom levels, ...
4
votes
2answers
825 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 ...
1
vote
1answer
50 views

Converting DTM data to STL?

I'm new here and was wondering if anyone could help? I'm looking to make some 3D maps using DTM data but need to convert it into .STL format for my MasterCAM to read so that I can generate the CAD ...
4
votes
2answers
1k views

Georeferencing 3D model or 3D buildings?

I am working on a 3D project so I have to georeference 3D buildings which are created by 3D designer. Does anyone know the solution?
0
votes
0answers
27 views

Meaning of zero in fromxy/toxy of ArcGIS Near 3D tool?

I am using ArcGIS 10.2 for Desktop. I am running the near tool for points with different attributes. Many are in the same location, so I would expect the Near_DIST3 to be zero and the location of the ...
2
votes
1answer
212 views

Landform design/3D in ArcMap 10.2

Im a self taught ArcMap user working in a small business, so no one to bounce problems off. My aim is this: I would like to be overlay different surfaces, manipulate them, and display them. The ...
0
votes
0answers
109 views

Details about Google Maps 3D / Google Earth 3D Switzerland

Are there any information/publication about Google Maps 3D / Google Earth 3D Switzerland? Like which databases resolution and source of DEM (laser-scan or photogrammetry) resolution and source ...
0
votes
3answers
376 views

Why is my DEM in ArcScene flat, not 3D?

I am working with Digital Elevation Models in format TIFF 2km * 2km. As far as I know DEMs should have a 3d function but in my case the DEMs are flat. They only look 3d because of the hill shading. ...
2
votes
2answers
936 views

Converting Shapefile to X3D format?

Does anyone know of an effective workflow to convert 3d-enabled shapefiles to X3D format? I have several projects containing anywhere from 10 to 5000 features (building sections) that I would like to ...
1
vote
2answers
253 views

Cross-platform 3D mapping solutions

I am a new software developer who created an application at my work that continually displays content on the Google Earth desktop application using KML. My work now would like a mobile solution to my ...
1
vote
0answers
46 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 ...
2
votes
2answers
352 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 ...
3
votes
1answer
271 views

How to find the concave hull for a cloud of points in 3D space?

The existing algorithm for convex hull is not able to capture the feature for a set of 3D points. Moreover, I found few mathematic tools have this function to obtain the concave hull and their ...
0
votes
1answer
106 views

How to add 3D features in Online ArcGIS (Story Map)

How to add 3D features in Online ArcGIS (Story Map) - I created the 3D layers / features using ArcMap Desktop and ArcScene I'm a student and a newbie looking for detailed information.
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
53 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 ...
0
votes
1answer
68 views

Remove 3D geometry in shapefile using OGR

I have a series of shapefiles, that have 3D geometries (ie: points ZM). I would like to remove the 3D geometry so that the files are 2D. Is there a way to remove 3D geometry from a shapefile using ...
1
vote
1answer
149 views

Cesium: Failed to obtain image tile X : 0 Y : 0 Level : 0

I'm trying to make a Cesium-based 3D web-viewer. At the moment I'm stuck with an error. Let me describe the situation: I have a PostGIS database, containing the 3D geometry of a building (which I ...
1
vote
0answers
147 views

Exporting 3d map in format manageable by VRML Java viewer?

I am new to GIS. 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, websites, etc... So far, I achieved the map result ...
0
votes
0answers
30 views

Pulling the building from ground to roof

I use Microstation v8. I have to make a building (solid) from existing property register (on the base level) cut on the top by the roof (which I have already). To sum up - I own the property register ...
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 ...
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 ...
4
votes
2answers
1k 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.