Questions related to GIS objects that have three dimensions.

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2
votes
1answer
174 views

2D polygons with height attribute to 3D features for ArcGIS Online

I have a 2D shapefile made of many polygons representing buildings. Each polygon has a height attribute. The goal is to get these into ArcGIS Online's "Scene" feature, showing extruded buildings, ...
1
vote
0answers
63 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
2answers
329 views

Unable to serve Cesium Terrain files

I am trying to generate 3d Terrain. I am serving the terrain files at localhost:8081 Here is the Cesium Code var viewer = new Cesium.Viewer('cesiumContainer', { baseLayerPicker : false, ...
1
vote
1answer
117 views

Conversion from Point 2D to Point 3D with measures

I have a number of PostgreSQL empty tables I am trying to setup for my data. I added the Point Geometry to one but later discovered it is X,Y aware and not X,Y,Z aware. How can I change this? I could ...
1
vote
1answer
65 views

How to store binary data referenced by 3D coordinates (xyz)?

I would like to store huge amounts of voxels (3D cubes with color and some other values) in a gis database. Does someone can recommend a database (indexing) system, where I can store binary data (a ...
8
votes
4answers
863 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.)
2
votes
0answers
190 views

Data source for 3D buildings (germany) [duplicate]

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. I'...
1
vote
1answer
504 views

How to Georeference 2.5D or Birds Eye View models or Buildings?

I am working on 2.5D mapping.So I don't know how to georeference Birds Eye Viewor 2.5D view buildings.If you did not understand then open http://www.youcity.com there you will find 2.5D buildings.If ...
0
votes
0answers
26 views

GMS or Rockworks for visualizing and modelling subsurface data

For my MSc thesis, I am working on developing geotechnical hazard maps in the middle East. The summary of the research problem is as follows: There is gypsum in the subsurface of some towns, which is ...
0
votes
1answer
43 views

Converting Shapefiles to KML and extruding on height

I am working on a free/open source workflow to ingest OSM data and convert it to a KML so I can view it in 3D with Google Earth. I used ogr2ogr to convert to a shapefile and have extracted the height ...
2
votes
4answers
2k views

Is there a way to get Z value 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: http://faunaliagis.wordpress.com/2013/08/14/...
37
votes
4answers
9k views

How to migrate from ArcGIS for Desktop to QGIS? [closed]

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 ...
4
votes
2answers
70 views

Qgis2threejs plugin results images with bleeding edges and wider background canvas

I have started using 3D Qgis2threejs plugin in an attempt to make some beautiful 3D images of LiDAR analysis I am currently working. I have two questions regarding that: I am getting that bleeding ...
2
votes
1answer
131 views

Where can I obtain 3D roadside features for UK?

I am doing some work on sight distances and I need a map or whatever of the UK that contains roadside features (road signs, trees etc) as well as the road features (road centreline, etc) so I can ...
2
votes
0answers
37 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
1answer
68 views

Tutorial for Kinect 3D scanning over a wide area & export to LAS? [closed]

I am interested in using a Kinect to 3D scan a large (~1 acre/0.4 hectare) area, but I am uncertain as to how I could best execute a surface scan of topography. Tutorials that I have seen online show ...
3
votes
0answers
55 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 ...
7
votes
4answers
1k views

Assigning RGB values from Geotiff image to LiDAR data, using R

I have given a Geotiff image and its corresponding Lidar data (x,y,z) in UTM coordinates. I need to merge the Lidar data with the RGB values from the image. That means, at the end, I need to plot (...
0
votes
0answers
40 views

Profile graph from 3D line features in ArcGIS Online

I need to create a web application in argis online to show a profile for a selected 3D line feature. All elevation profile web apps and template I found returns DEM Z values for a selected feature. Is ...
0
votes
1answer
99 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
89 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
877 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
160 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
312 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
884 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
528 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
935 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
65 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
160 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
17 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
868 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
29 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
66 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
90 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
224 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
113 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
82 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
199 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, ...
2
votes
1answer
364 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
221 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 ...
1
vote
1answer
425 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
160 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
64 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
78 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
885 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
101 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
28 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
228 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 ...