Questions tagged [3d]
Questions related to GIS objects that have three dimensions.
0
votes
1answer
41 views
Using LiDAR data to create a 3D contour map
I'm using UK gov LiDAR information (ACS format) to generate a contour map in QGIS 3.6. My problem is that the contour map it generates is flat, I need it to be 3D as I want to take the contours into ...
2
votes
1answer
50 views
3-D Terrain effects for vectors in QGIS?
I'm a bit new to QGIS, and making a few maps of roads through mountains. I'm looking to have a 3-D effect within my 2-D map.
I got a DEM, made a hillshade, and blended a basemap over it. Nice ...
0
votes
0answers
20 views
Pictures with isobaths to a 3D Model in a Browser
I have pictures of lakes with isobaths (*). The result should be a 3D model in a browser.
I tried to make a vector image, but this results in a SVG. I can not import it.
How do I make a layer of the ...
0
votes
0answers
6 views
ArcGIS Pro - need to import 3D model then create polygons on 3D model to measure sections for surface area
I am generally new to ArcGIS Pro. I am working on a project using photogrammetry where I am reconstructing 3D models and trying to measure the surface area of different sections of the models. Maybe I ...
6
votes
0answers
51 views
Calculate volume of space defined by multiple overlapping 3D polygons
I have thousands of 3D polygons scattered in space but they mostly overlap with many of their neighbors in big extent.
Is there any way how to compute volume they define effectively?
I would love ...
0
votes
0answers
11 views
GRASS GIS - V.VOL.IDW interpolation interpolates same property vertically
When interpolating a 3D raster using v.vol.idw (ref), the vertical cross section show that the properties are the same vertically.
v.vol.idw input=GEOMOD_March24@Toronto output=...
1
vote
1answer
41 views
Mapbox GL JS/Android: Draw User's 3D Vector Layer of Buildings
Here:
https://docs.mapbox.com/mapbox-gl-js/example/3d-buildings/
It's possible to draw 3D buildings by taking advantage of extrusions, however the 3D vector layer source is the Mapbox's underlying ...
0
votes
0answers
6 views
GRASS GIS - 3D raster, make voxels above DEM NULL (or remove them)
I am currently using r3.out.vtk to export a 3D raster to view Paraview (several million cells).
With r3.out.vtk, you can create a 3D raster with a top and bottom, which is fine in itself. However, if ...
0
votes
0answers
34 views
eval (@atlas_pagename)
In QGIS 3.6, I'm successfully using the "eval (@atlas_pagename)" option that automates the generation of class maps when data
are organized by different fields and making use of the Atlas of the ...
1
vote
0answers
15 views
Creating lines from 3D polygons in ArcGIS [closed]
I have a task to Create simple lines from 3D polygons (pipelines created in 3D Modeling program) to operate them in ArcGIS.
What tools can be used to perform this?
1
vote
0answers
37 views
Plotting 3D data using QGIS? [closed]
Has anyone used QGIS to plot 3D data (temperatures profiles at different depths at sea)?
1
vote
1answer
81 views
Viewing 3D relationships of layered points and DEMs by displaying absolute height for both in QGIS? [closed]
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 ...
0
votes
0answers
22 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 ...
0
votes
0answers
34 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
votes
1answer
36 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 ...
2
votes
0answers
127 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
votes
1answer
54 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, ...
0
votes
0answers
19 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 ...
0
votes
0answers
24 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 ...
0
votes
0answers
31 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?
0
votes
1answer
59 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 ...
1
vote
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 ...
0
votes
0answers
38 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, ...
0
votes
0answers
40 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 ...
4
votes
0answers
77 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....
0
votes
2answers
64 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 ...
1
vote
1answer
41 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, ...
0
votes
0answers
35 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 ...
2
votes
0answers
66 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:
...
1
vote
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 ...
0
votes
0answers
36 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 ...
1
vote
0answers
31 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?
0
votes
0answers
54 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 ...
1
vote
0answers
69 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 ...
3
votes
1answer
149 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 ...
0
votes
1answer
38 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 ...
1
vote
1answer
67 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....
1
vote
0answers
35 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
...
1
vote
1answer
73 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
votes
0answers
145 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
80 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
votes
0answers
62 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 ...
0
votes
0answers
82 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.
1
vote
0answers
147 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 ...
0
votes
0answers
42 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 ...
0
votes
0answers
82 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 ...
1
vote
0answers
91 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
361 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?
0
votes
0answers
40 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
202 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 ...
