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Questions tagged [3d]

Questions related to GIS objects that have three dimensions.

4
votes
0answers
33 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
53 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
39 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
27 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
34 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
21 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
21 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
17 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
24 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 ...
0
votes
0answers
16 views

Creating 3D scene from geotif-files using ArcGIS Desktop?

I would like to create a 3D scene for a students project in ArcGIS (the goal is to calculate the solar radiation at a given point). I have access to precise data for my region over a university ...
-1
votes
0answers
33 views

QGIS 3D Map Viewer not Displaying Vector Data

Are there any links to prep the data properly for the 3D Map Viewer? I assume that is the issue. I have vector data on an openstreetmap that is not showing up at all on the 3d map viewer. Only the ...
1
vote
0answers
45 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 ...
1
vote
1answer
61 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
22 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
51 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
votes
0answers
18 views

MultiLineString with elevation data exports 2D shapefile in QGIS?

I imported lyr data to QGIS. I see the countours nicely. The attribute table shows elevation data. When I save the layer to a shapefile, geometry type in linestring, and open it in a shapefile viewer,...
1
vote
0answers
23 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
49 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
80 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
45 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
52 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
56 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
82 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
30 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
50 views

Can you create a 3D choropleth map in QGIS 3 with native tools?

This is similar to this question, but I just wanted to know if the same could be done with the new release of QGIS 3 without the use of the QGIS2threejs plugin. I am hoping this is possible so I can ...
1
vote
0answers
22 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.
1
vote
0answers
68 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
194 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
27 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
157 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
votes
0answers
113 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 ...
0
votes
0answers
157 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 ...
0
votes
0answers
70 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
144 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 ...
2
votes
0answers
48 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
219 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?
2
votes
2answers
140 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? ...
1
vote
0answers
40 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 ...
2
votes
0answers
59 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,...
1
vote
0answers
87 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 ...
0
votes
0answers
15 views

Pop-up for image withqgis2threejs with qgis Las Palmas 2.18.19

I'm trying to let's open pop-up on click when generate 3DDEM with qgis2threejs,like this exemple https://anitagraser.com/2015/01/31/publishing-interactive-web-maps-using-qgis/ any tips to how to do?
1
vote
1answer
130 views

3D Points within 3d Polygon in PostGIS

I've been working with PostGIS for a while now and I'm able to run queries over huge datasets fairly easy and fast. However, I do have an issue now that I don't know how to solve. I did find some work-...
0
votes
0answers
33 views

Creating 3D surface model from Polylines, and then create/move Polylines on that surface

I have vector layer of Polylines. I want to build from them a 3D surface model, so then, I would be able to move some of the Polylines to better position them, or alternatively - create (draw) new ...
3
votes
1answer
51 views

PostGIS Axis orientation BOX3D

I was wondering which axis X Y and Z point which way for PostGIS BOX3D-Objects. I thought Z was up, X was right and Y was "back", which matches this drawing: https://gis.stackexchange.com/a/214938/...
1
vote
0answers
110 views

Getting a 3D view from Google Maps into QGIS?

I guess it would be safe to assume that there is no straight-forward way of doing this, since 3D functionality was just rolled into QGIS, but is there a way of importing the 3D (tilted) view from the ...
0
votes
1answer
130 views

Seeking QGIS plugin for creating buildings?

is there a plugin for QGIS, which extrudes buildings with sort of random heights and adds a roof on top? Ideally, the plugin would also put different textures as facades, e.g., having some templates ...
0
votes
0answers
55 views

Visualising PyKrige results in ArcGlobe?

Has anyone successfully visualised 3D PyKrige results in ArcGlobe? I've just used the Python package PyKrige to do some 3D kriging. I have the kriged values and variance in the form of 3D NumPy arrays,...
0
votes
0answers
33 views

Clipping polygon Z feature returns borders with Z=0 in ArcGIS

I am clipping a polygon Z layer with another polygon Z, and the result have the borders with Z=0. Is there any enviroment or further tip to perform correctly the clip in 3D correctly?
0
votes
0answers
93 views

Can't add 3D view using OpenLayers with CesiumJS

I'm trying to add 3D view to map using OpenLayers and CesiumJS, but I'm getting an error always and can't switch to 3D , ol3cesium.js:360 Uncaught TypeError: this.S.ba is not a function at new ...
0
votes
0answers
33 views

QGIS .geoJson polygons with attributes table—need to open as 3D in Rhino / export doesn't work

I'm working on a 3D model of Palermo Central City. .geoJson imported into QGIS and can see it as flat polygons with height and level attributes in the attribute panel. Need to make this into a ...