Geographic Information Systems

Questions tagged [3d]

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Questions related to GIS objects that have three dimensions.

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11 views

AGOL buildingexplorer. Can't show all the layers of my 3D Models at once, only 1 model at the same time

I have 2 3D models in my scene. I want to show all the layers of these models but for some reason I can only see all the layers of 1 model at the same time. I think it has to do with the building ...
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1answer
19 views

Assigning a polygon shape to density values

I am pretty new to GIS as a whole. I have a simple flat file in a csv format, as an example: lat,long,name,val 25,40,abc,10 50,44,def,20 What I am trying to achieve is to assign a 3d polygon in ...
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0answers
25 views

Adding texture file to QGIS 3D view?

I am trying to visualize a 3D .img file in QGIS 3.6 . I can add the .img file, as well as a .tiff overlay to my map. When I create a new 3D view, I am able to select the .img as the elevation (which ...
3
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1answer
63 views

Creating 3D geometry column by combining existing 2D geometry column with “elevation” column?

I want to create a table that contains 3D data. I currently have 2D data stored as EWKT, which is multipoint geometry in one column, and another column that has elevation from sea level in another ...
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19 views

Making feature class of only the Architectural class of a revit file?

I am trying to publish a revit file to ArcGIS Online and I only want the architectural class to publish. Because in here are also some underground foundation which isn't shown in ExteriorShell. But ...
2
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1answer
38 views

3D View is not available in QGIS 3.4

I'm running QGIS 3.4 Madeira on Linux Mint 17. The upgrade to 3.4 seemed to go smoothly, but there is no "3D View" option in my "View" menu. Is there something else I need to do? FWIW QGIS 3 J's ...
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1answer
42 views

qgis2threejs window is blank

I have used QGIS2threejs for several years in QGIS2. Now we have upgraded to QGIS3 at work and the plugin no longer works. The qgis2threejs window is blank and it displays the error “Any 3D objects ...
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0answers
21 views

Contour Polygons to 3D

I am trying to make a 3D representation of the map below. I have 3 polygons which represent contour lines. It starts at 0ft for the outside polygon, 10ft in the middle and 20ft for the very center ...
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1answer
31 views

Rotating Polygon in 3D Space as KML for Google Earth?

I'm trying to create this effect in a KML to be displayed in Google Earth. I am writing in KML 2.1 as a reference. I know it is possible to create a polygon that is circular in appearance, but can ...
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0answers
35 views

Import raster layer to Potree viewer

I need to import a raster layer into Potree viewer. I don't need to extrude raster by pointcloud. I only need a raster base layer. There is examples with Cesium, but it is too heavy for my task. Maybe ...
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1answer
42 views

Creating 3D using Qgis2Threejs

I have strange results when run Qgis2Threejs: used Google satelite, SRTM file in format .hgt, projections: 3857 and 4326 but didn`t receive 3D model.
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21 views

Converting Cesium3DTileset into LAS or LAZ files

I got the json file and five .b3dm model files from this SandCastle example: https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=3D%20Tiles%20Adjust%20Height.html I want to convert them into .LAS ...
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0answers
26 views

Exporting Georeferenced Models from Meshlab?

I am struggling to understand Meshlab's and 3D mesh file's relationships to georeferencing. I am coming from a GIS background, so I believe my assumptions on how this should work are preventing me ...
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0answers
25 views

Symbolising 2.5D polyline based on slope of each segment using QGIS?

I have a 2.5D polyline (each vertex has an elevation value) of a hiking route. I would like to change the line width depending on the slope of each segment in order to visualise how difficult each ...
2
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1answer
40 views

QGIS 3.6 3D View: Data defined override (expression) button is missing

I am trying to create a 3D View in QGIS 3.6.0, but the buttons for data defined parameters (e.g., width or height) are missing in the Layer Properties dialog (see screenshow below) I want to set the ...
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0answers
51 views

Loading collada into 3D view of QGIS using Qgis2ThreeJs Plugin?

I have been looking at documentation and other posts but cannot find a way to load a 3D model into QGIS. I Installed the qgis2ThreeJs Plugin. I have tried to load a collada file in a temporary ...
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1answer
23 views

Extruding vector using one of its attributes in GRASS?

I'm following this tutorial: https://grasswiki.osgeo.org/wiki/Extrude_2D_polygons_to_3D. This is what I've done so far (inside GRASS): - Import a DEM HGT file: > r.in.srtm input=S23W043.hgt --...
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0answers
18 views

Creating drawover/flyover effects on 3d map

In the video below, check out the block between 2:50 & 3:35: https://youtu.be/DXHQ3CuY7bI?t=170 I'm looking for the best way to easily replicate this effect. Any ideas? Software to use? Hire ...
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0answers
54 views

What would cause a Cesium 3D-Tiles tileset to not even request it's content?

I am generating an I3DM through Python. I know that the I3DM is probably ok, since the 3d-tiles-tools allow me to extract the binary GLTF file from it. However, when I go to render the tileset in ...
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1answer
36 views

ST_Force2D in SQL Server alternative? 3D loading problems from QGIS to PostGIS

I am having problems loading a 3D layer from MS SQL Server to PostgreSQL PostGIS database with QGIS. The PostGIS data loader in DB Manager and other import tools in QGIS have problems with 3D export ...
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0answers
18 views

Merging elevation values of multiple point shapefile

In ArcMap I have thousands of points with elevation values from an aviation route. This route is stored in a multiple point shapefile. I made a polyline shapefile based on the route x, y locations. Is ...
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0answers
42 views

Behaviour ST_Intersection of 3D LINESTRING and 3D POLYGON - Z value with GEOS backend

I do not quite understand the behaviour of ST_Intersection applied to 3D geomerties when using the GEOS backend. Take this example: SELECT ST_AsText(ST_Intersection('POLYGON((1 1 1, 6 1 3, 6 4 3, 1 4 ...
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1answer
98 views

Creating 3D image from HGT files?

Is there any command line tool to create a 3D terrain from a DEM SRTM HGT file like this? I mean, given a camera position, a HGT file and a satelite image. EDIT 1 First try to adapt mdsumner's ...
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1answer
48 views

qgis2threejs 2d instead of 3d view

I want only display a simple cube within qgis2threejs as a collada dae file. I have this cube created with blender. But the result of the cubes within qgis2threejs are only in 2D. The file is OK, I ...
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1answer
36 views

Split 3D polyline at point using QGIS

I want to split a QgsPolyline geometry into two separate lines at a given QgsPoint (by projection onto the line), adding the point to the line as end point of the incoming line and start point of the ...
6
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1answer
114 views

Using Z-Values instead of attribute Z?

To locate any vertex, it is spatially described with x and y coordinates - of course. You can also add Z and M values - but what is the advantage to use the Z in the vector instead of a attribute Z in ...
2
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1answer
89 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 ...
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0answers
34 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 ...
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0answers
15 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
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0answers
69 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 ...
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0answers
17 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=...
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1answer
134 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 ...
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0answers
7 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 ...
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0answers
50 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 ...
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0answers
17 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?
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0answers
45 views

Plotting 3D data using QGIS? [closed]

Has anyone used QGIS to plot 3D data (temperatures profiles at different depths at sea)?
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1answer
138 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 ...
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0answers
36 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
43 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
38 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
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0answers
158 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
71 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
22 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
52 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
36 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
64 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
60 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
99 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
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0answers
104 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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