Questions related to GIS objects that have three dimensions.

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6
votes
3answers
5k 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 ...
0
votes
1answer
202 views

plot 3D graph based on raster pixel values

I am new to raster data. I have a raster tif file with population density value in each grid cell. I am interested in plotting a 3D graph based on raster values in ArcGIS or R. The similar graph is ...
2
votes
1answer
192 views

3d arcgis raster .tiff image to CFD software

I am trying to export 3d raster image prepared in ArcGIS to cfd package such as Fluent. I was wondering if anyone has experience to convert raster image to autocad 3d format, stl, vrml or any other ...
1
vote
1answer
26 views

QGIS - selecting 3D Polygons

I have downloaded a 3D polygon shapefile of buildings. I would like to be able to select some of the objects to create a new shapefile for doing 3D rendering but I cannot seem to be able to select any ...
1
vote
1answer
220 views

What KML features are suitable to display 3D atmospheric density data using Google Earth?

I wish to use Google Earth to visualise and explore 3D atmospheric density data. In my case it is ionospheric electron density, which is a niche area, but I can imagine this might have been done by ...
1
vote
1answer
166 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 ...
2
votes
2answers
104 views

Where is the nviz tool in qgis 2.14 with GRASS 7.0.3?

I hope Im not blind but I looked in the grass tools (modules) and qgis plugins but couldnt find it. When i try to run nviz from GRASS the whole programme chrashes just before concluding. Its a ...
1
vote
0answers
15 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
1answer
39 views

Utility Profiles — ArcGIS

I am currently working to convert our cities storm and sanitary sewers from 2D to 3D. Currently, we create profile views in CAD which means a lot of manual work anytime anything changes. We have a ...
11
votes
8answers
5k views

Viewing LiDAR data from web browser?

I am looking to host lidar data on my own server and give clients the ability to view that data through a web browser as a 3D point cloud (file would be in .las format or equivalent), possibly with ...
16
votes
4answers
2k views

Are there any alternatives to ArcScene?

I think I've had it. I've been struggling to create polished scenes and flyover animations using the ESRI tools. SketchUp is great but it does not handle large datasets and most 3rd party models (3D ...
0
votes
0answers
14 views

3d city database set up problem

I am trying to set up 3d city database and I have some problems. I hope you can help me. I receive an error as you can see attaching file. What is wrong? The error message is: '"\psql"' is not ...
0
votes
1answer
45 views

How to export a 3D map into a image file?

With qgis, it seems to be possible to visualize 3D with two tools : nviz and Qgis2threejs. But i would like export the result into an image file. Is it possible to do that with qgis?
1
vote
1answer
40 views

How to do diagram block with open source software?

I would like to do a block diagram (topographic and geological representation). Is it possible to do this with QGIS (or other open source software), in Windows 7?
0
votes
1answer
256 views

Does ol3-cesium accept DEM files?

I'm using OpenLayers 3.6.0. I want to use ol3-cesium. Ol3-cesium use cesium for glob visualization. I have a question: In ol3-cesium, Can I see Ups and downs of land? In other words Does it accept ...
2
votes
1answer
246 views

iPhone app to record 3D location information

Does anyone know of an app that would run on an iPhone or iTouch that would record the X,Y and Z information from an external GPS? I am using a Dual XGPS150 Bluetooth receiver. The GPS will record ...
0
votes
1answer
20 views

Create a 3D map with extruded polygons for use in ArcGIS Javascript API

I am working on a project which contains several choropleth maps (State and County level mostly). In very simple terms, I would like to create 3D extrusions of the polygons based on an attribute. So ...
0
votes
0answers
30 views

Measuring correct line length from a 2D polyline using 3D raster QGIS

I am trying to measure the correct line length of a 2D polyline when draped over a 3D surface. In theory I would expect the line length to change when moved from the 2D to 3D. The polyline is spaced ...
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 ...
0
votes
1answer
35 views

Working with 2D building footprints and ArcGIS Pro / CityEngine

I've been trying for a few days now to create 3D buildings from my 2D building footprints. All the tutorials I've been through let me down right where it counts so I've decided to ask the pro's here. ...
3
votes
1answer
199 views

RDF representation of 3D-geodata?

When it comes to 2D-data it seems there are a couple standards out there to represent it in a semantic way (GeoSPARQL, NeoGeo, ...). However I couldn't really find one to do that for 3D-data. I have ...
2
votes
3answers
732 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
27 views

Setting final orientation of polygons in CityGML model

I am converting shapefile model of buildings in LoD2 to CityGML. In CityGML really matter about poylgon orientation(Countercloskwise can be seen from outside, Clockwise from inside). I have problem ...
2
votes
1answer
363 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 ...
2
votes
0answers
32 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 ...
0
votes
0answers
15 views

How to symbolize 3D polylines segements?

Using ArcGIS, I created 3D polylines by extending the sample code here: ESRI Sample Code import arcpy # A list of features and coordinate pairs feature_info = [[[1, 2, 5], [2, 4,10], [3, 7,25]], ...
43
votes
6answers
23k 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) ...
16
votes
7answers
2k 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 ...
0
votes
0answers
8 views

Display 3D collada files and shapefiles [duplicate]

How do I display 3D Collada (or Multipatch) building model along with some 3D buffer shapefiles using python? I was using arcpy for buffering, but arcpy does not have the feature to add shapefiles ...
2
votes
1answer
43 views

How to save points without losing z dimension

I try to save Points with OGR. It works well but I lose the z dimension while saving/loading. from osgeo import ogr from osgeo import osr shapePath="...xxx.shp" X='1.0' Y='2.0' Z='3.0' driver = ...
2
votes
1answer
60 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
22 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
261 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
66 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
80 views

ESRI Drone2Map - how to use “texture” image.

ESRI's Drone2Map beta produces various outputs; LAS, dem, hillshade, orthomosiac, etc. One of these is "Texture.jpg" file. This image is not projected but it looks like as if I should be able to ...
1
vote
1answer
52 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
835 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. ...
1
vote
1answer
499 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
22 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
33 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: ...
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
59 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
29 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
46 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
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 ...
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
28 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 ...