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Questions tagged [3d]

Questions related to GIS objects that have three dimensions.

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1answer
55 views

Viewing 3D relationships of layered points and DEMs by displaying absolute height for both in QGIS? [on hold]

What are the limits of viewing points and rasters together in QGIS 3D (either in-app or using qgis2threejs) in comparison to ArcScene? Is using GRASS NVIZ the solution? (see end of post) I am using ...
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0answers
15 views

3D Visualization Error

I am having an issue utilizing 3D Visualization. When I access New 3D Map View, the map that shows up is a 2D representation. Seeing this, I navigate to the 3D configuration tab (represented by a ...
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0answers
26 views

Interpolate 3D raster with Anisotropy

I am building a 3D geological model for soil deposits. I have two approaches to build a 3D raster. My dataset is about 300k points of bh information with texture and permeability at every meter ...
2
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1answer
32 views

Select tools with 3D geometry?

I'm trying to work with a layer that uses a PostGIS geometry column of 3D polygons, but hit detection seems to be broken when trying to use the select tools. The geometry renders fine, but when I ...
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0answers
77 views

Increasing zoom level in 3D View QGIS Desktop?

I would like to increase the zoom level for my mosaic raster image in the 3D View of QGIS Desktop 3.4.4. I made a mosaic out of four raster images downloaded through the STRM-plugin for DEM data. ...
2
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1answer
46 views

3D exporting and Qgis2threejs plugin

I have a .shp-file of some buildings with a sheet in an attribute table of their height. I want to extrude them using a Qgis2threejs plugin, but since a sheet of height is shown as a type of QString, ...
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0answers
15 views

Mapping over 3D imagery

Most 3D visualisation solutions I've seen are drapes of imagery over a surface like a TIN. Is there any open source software out there that can permit viewing of 3D data (e.g. Leica ADS data) and ...
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0answers
10 views

Creating 3D Local Scene using pointcloud, DSM, and orthomosaic from Drone in ArcGIS Pro?

I am trying to create a local 3D scene in ArcGIS Pro and display data fro drone flights. I have the orthomosaic from the flight as a .tif, the Digital Surface Model as a .tif, and my pointcloud from ...
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0answers
24 views

Adding 3D GML file in OpenLayers

I have a GML file which has Z values associated. Is there a sample to show this GML file with 3D in OpenLayers?
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1answer
55 views

Generating 3D surface between 2 linestrings using PostGIS?

I'm trying to create a surface with a slope between 2 circles, i.e. one large external circle with a Z equal to 300 (m) and another one inside, smaller and with a Z equal to 200 (m). I should obtain ...
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0answers
22 views

Measuring distance traveled, in 3D using ArcGIS Pro?

I'm working in ArcGIS pro, I have tracking data from a bird's flight path and want to know how far the bird flew. I started with Google Earth KML Layer and imported to ArcGIS Pro. This layer has data ...
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0answers
27 views

QGIS Display Attributes as Z Value for Point Shapefile?

I would like to create a state map that displays a 3D bar chart for each of 20 colleges (mapped as points) showing the percent share of engineering degrees earned by award level (i.e., assoc, ...
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0answers
16 views

Extract Layers form .slpk File

I have been given an .slpk file generated by Drone2Map. I can import the .slpk file into ArcGIS Pro but I'm unable to edit the 3D layers in the package. I have not been able to find a way to extract ...
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0answers
57 views

Fixing buildings that do not appear in 3D using Mapbox gl js?

I'm trying to adopt this Display buildings in 3D example, but I found out that in my city (Minsk, Belarus) some buildings look flat like this: The coordinates of this particular building are 27....
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2answers
57 views

How to densify point feature class in ArcGIS?

I have a 3D (x,y,z) single point feature class which points are equally spaced, like this: As the distance between each points are more than one meter, I was wondering if there's a possibility to ...
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1answer
40 views

Displaying pointcloud symbolized with RGB values in ArcMap?

I know that I can display a LAS dataset in ArcScene with RGB Symbology, but is there a way of doing this in the 3D View window in ArcMap? The LAS Dataset toolbar only has symbology for elevation, ...
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0answers
31 views

Is it possible to do a visibility analysis and create a 3d - cone as a result in ArcGIS?

I have a digital surface model of a region and the coordinates and height of an observer point and need to do a 3d - visibility analysis for this point. However, as a result I would need a ...
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0answers
44 views

Complex 3D/elevation profiles in ArcMap 10.6

I'm looking to create a more informative 3D Profile than appears possible with vanilla Arc tools. Honestly I'm kinda surprised that this doesn't exist, maybe I'm searching the wrong terms. Situation: ...
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0answers
23 views

Is there a way to mask the area projected in QGIS 3D View?

I'm attemping to create a 3D map view for export to a PDF. However, QGIS's 3D map view seems to base its canvas solely on the viewable area within the main window in QGIS proper. e.g., as you zoom ...
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0answers
31 views

Adding 2d and 3d base map which includes map actions in Qt application using C++?

I would like to add a base map(Map in the background) to view geospatial vector data in a Qt application i.e written in C++. I have gone through the Qt documentation here. I was only able to find 2d ...
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0answers
22 views

PyQGIS 3D Map API

I can't find the way to show / hide / manage 3D map canvas in pyqgis. I've searched in API but nothing. Is there a way to control the 3d map visualization from plugin like QgsMapCanvas?
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0answers
32 views

Choosing a Projected CRS in Order of Making a 3D Polygon Display in QGIS 3.4.1

I have been followed the Instructions explained how to make 3D polygons. I have downloaded some random polygons from OSM and defined the 'Extrusion' with the expression rand (5, 40). Then, I ...
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0answers
58 views

Optimal Voxel Database Schema in PostGIS

I have a database of point data in PostGIS that I'd like to work with as voxel data. For each voxel, the value would be the number of particles within its volume. Let's say for the sake of argument ...
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1answer
95 views

PostGIS -> LineString + PointZ = LineStringZ

DATA I have 2 tables in PostGIS: linestable with MultiLineString geom surveypointtable with Point + elevation attribute GOAL The goal is to rebuild the lines as 3D replacing line's vertices with ...
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1answer
32 views

JTS ConformingDelaunayTriangulationBuilder, what is the right way to set tolerance?

I have one 3D polygon and one 2D polygon. I know that 2D polygon is inside 3D polygon (when projected on the plane) and I want to find Z-coordinate for 2D polygon points. The idea is to apply ...
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1answer
61 views

Seeking open source or free tool to open 3D Mesh GIS files?

I'm looking a way to open 3d Terrain Mesh files. I have four different folders with same 3d content , I'd like to open one of them : Cesium folder (with internal Tile folder, web.config, tileset....
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0answers
29 views

Select nearest 3D point with sfcgal

The Data Two sets of 1000 points A.geom and B.geom in PostGIS The Problem From Set A take the first point and find its nearest neighbour in Set B Calculate the 3D distance between these two points ...
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1answer
58 views

Get area and perimeter of 3D plane using JTS library

is there any Java API in Geotools JTS lib for calculating area of 3D plane? Same about Line, where points have three dimensions.
2
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0answers
112 views

Displaying cross sections/3D volumes in QGIS 3.X

Is there is a way to display vertical images (cross sections) in a 3D view window in QGIS 3? I want to display some cross sections underneath a geological map overlain on the topography. I can do ...
2
votes
1answer
67 views

Get z value for a point of polygon using JTS library?

I have a polygon described with coordinates which have z value. Is there any JTS utility that would allow me to get Z value for a coordinate which is inside the polygon? I have a function for doing ...
4
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0answers
55 views

ST_3DIntersects says 'no' despite geometries intersecting

Considering the following query I expect both geomb and geomc to 3D Intersect with geoma. According to postgis, only geomc intersects. Unfortunately I can't come up with a more simplified polygon as ...
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0answers
69 views

QGIS 3.2.1 - 3D rendering causes application to crash

Whenever I try to render features on 3D map, QGIS crashes. Does anybody have any idea why? The 3D map works ok until I set 3D rendering for a layer.
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0answers
109 views

QGIS and BSB files for 3D Printing

I am new to GIS. I'm a sailor and 3D printing enthusiast. What I want is to print a 3D representation of my sailing area. I've acquired the raster files for my navigation charts and they consists ...
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0answers
37 views

viewing 3d geographic data (shapefiles, geojson etc.) in google maps?

As the title suggest, is it possible to upload some 3D data (i.e. data with z-values) to google maps and let other users on other computers access/view this data in 3D? And if so, how can this be ...
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0answers
74 views

Making 3D choropleth map in QGIS 3 with native tools?

This is similar to this question Is it possible to draw a 3D Choropleth Map in ArcGIS?, but I just wanted to know if the same could be done with the new release of QGIS 3 without the use of the ...
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0answers
24 views

Deforming grid by specific values in 3D?

I would like to ask how do you think is done the deformation of the grid in this drawing example I found? I would like to do a similar workflow, each height representing a specific value.
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0answers
84 views

Getting solid shape of dam lake in 3D by using QGIS?

I am working on a plugin. I will get a raster map of a dam lake for instance. When load that map I want to get a 3D model which fills the lake entirely. Then I will divide the lake on horizontal view ...
1
vote
1answer
301 views

Getting buildings multipatch from LiDAR data without building footprints?

I have a 3D LiDAR data and aerial images. Is there a way to obtain the buildings multipatch (.shp), given that I don't actually have the buildings' footprints?
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0answers
32 views

Rasterizing 3 dimensional dxf to mask netCDF?

I have difficulty in rasterizing 3 dimensional dxf (single building) to mask netCDF using GRASS, Blender, or Qgis. I want the mask netCDF to have value 1 in interior of the building and zero value ...
2
votes
1answer
190 views

Seeking QGIS 3.0 ways to create browser based 3D scenes like qgis2threejs plugin does?

I want to create a browser-based 3D scenes and use Github to share it. However, the qgis2threejs plugin is not available in QGIS 3. Is there any alternative way to create similar browser-based 3D ...
2
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0answers
145 views

3d pdf from qgis, version 3.0 and above

Is it possible to create a 3D pdf from qgis 3d mapview (version 3 "Girona" and above)? I have tried with Adobe Acrobat 9 Pro Extended (3D capture) and it does not work. The adobe works fine with ...
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0answers
174 views

How to add leaflet with threejs in QGIS plugins

How to add open street layer as background in qgis2threejs plugin. I am able to visualize buildings in 3d view but not able to add open street map or google map as background. It is possible in ...
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0answers
101 views

QGIS 3d viewer to layout?

Is it possible in QGIS 3 to create a layout with a view from the 3d viewer? Also I am having a hard time getting labels to show in the 3d viewer, is it possible to do so?
2
votes
1answer
168 views

AR Spatial aware 3D-Model creation

I'm using now for a couple of years Augmented Reality to visualize 3D-Models, but I never thought to much about the correct projection, when I create my 3D-Models. But for the current project I'm ...
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0answers
57 views

Seeking inexpensive GIS software that can export TIN files to AutoCAD? [closed]

I'm an architect who would like to be able to download 3D terrain info and then bring it into AutoCAD 3D for use in renderings and animations using a couple of rendering/animation softwares called ...
1
vote
1answer
266 views

Render 3D spikes based on population data in QGIS?

I believe it can be done with 3D Analyst in ArcGIS, but is it possible to achieve something like this in QGIS? Or should I generate a raster and use it as a relief map in a 3D application?
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2answers
172 views

using GRASS on a .ply file

I have a point cloud (.ply format) that I got after using Structure from motion techniques (with MicMac). I would like to calculate its volume with r.report in GRASS. Will r.report work on a ply file? ...
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0answers
47 views

DEMs not displayed properly in 3D in ArcScene and QGIS

Some of my DEMs are rotating about an axis off the screen, if that makes sense. I defined them with a CRS of GCS 1984 and projected it in UTM. I am only loading one at a time to provide perspective ...
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0answers
62 views

QGIS 3d visualisation of polygons

I'm working on a dataset from an excavation collected by an ancient total station. I have a point layer with point code, xyz values and a description of the point. These points are corners of features,...
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0answers
95 views

3D map view in QGIS with .grd format bathemetry data

I am attempting to use the 3D map feature available in QGIS3 for viewing bathymetry data. These data are in .grd format, but I’ve also tried using data in GeoTiFF format with no luck. The 3D map ...