Questions tagged [mesh]

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1answer
67 views

QGIS Mesh Calculator output file (.dat)

I want to understand Mesh Calculator in QGIS 3.8.3 to make calculation between two variables of a NetCDF file. Each of these variables has [lon, lat, time] dimensions. The calculation is done smoothly ...
1
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0answers
29 views

How to determine if a .obj 3D Mesh file is geo-referenced or not?

I have a .obj file output from OpenDroneMap. But I cannot determine if it is geo-referenced or not. How can I determine that?
3
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0answers
94 views

How to convert .OBJ 3D Mesh Georeferenced file generated from OpenDroneMap to .kmz format for Cesium?

I have Open Drone Map Output of a 3D Mesh Object file in .obj extension. I want to convert it into .kmz format to put it into Cesium Ion. How can I convert the files in the picture to a .kmz format ...
0
votes
0answers
18 views

3dm data disappears after rotating layout in QGIS

I ran into a bug (I suppose) recently. After loading a *.3dm format mesh (triangulated irregular network with elevation data), with the Layer --> Add Layer --> Add Mesh Layer command, I put some data ...
1
vote
0answers
21 views

QgsMeshLayer in memory

I am trying to create a Meshlayer in memory and tried this simple test in QGIS 3.6: from qgis.core import QgsProject,QgsMeshLayer proj = QgsProject.instance() uri="1.0, 2.0 \n2.0, 2.0 \n3.0, 2.0 \n2....
2
votes
1answer
227 views

qgis-mesh data (GRIB2) to geotiff

basically i am trying to get out the direction and magnitude information of the current (flow/movement of water) information layer of a grib weather data file - which is a mesh in qgis terminology. I ...
0
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0answers
141 views

Agisoft Metashape Orthomosaics. DEM from mesh or dense point cloud

Does anyone know the differences between Orthos built from DEMs that were constructed from dense point clouds rather than mesh? My purpose is to preserve original data and minimize interpolation while ...
0
votes
0answers
27 views

Creating calculated field in Raster layer using QGIS?

I have a NetCDF file (http://rs-data1-mel.csiro.au/thredds/catalog/bawap/rain/day/2017/catalog.html?dataset=bawap/rain/day/2017/bom-rain_day-20170201-20170228.nc) which I have imported into QGIS (...
1
vote
1answer
122 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....
2
votes
1answer
675 views

ECEF (EPSG:4978) glTF model doesn't show up in Cesium

The issue: I have a glTF (ver. 2.0) mesh (converted from ply to dae to glTF) with triangles coordinates in EPSG:4978 that doesn't show up in Cesium (ver. 1.42). The code: This is the code in the ...
0
votes
0answers
220 views

Generate XYZ coordinates of DEM mesh/grid

Is there a way to generate a wire grid of plain text XYZ coordinates starting and ending points for each wire segment? I want to generate them from a digital elevation model. Preferably with gdal/qgis ...
1
vote
0answers
139 views

Getting Shaded relief from DXF mesh using QGIS?

I am stuck with a problem in QGIS. I have a three-dimensional mesh as DXF from AutoCAD, which I imported into QGIS. Now I wanted to create a shaded relief map. I think I need to create a raster from ...
0
votes
2answers
185 views

Client-side 3D surface generation in ArcGIS JS API

Is there any way to create some sort of 3D surface (mesh, TIN, elevationLayer) from contour lines on the client side with ArcGIS JS API? Or alternatively edit a hosted 3D surface (any format)? In our ...
1
vote
2answers
638 views

Create triangles from points on ArcGIS

I'm using ArcGIS 10.3. I need to create a grid where all the points are vertexes of triangles that do not overlap themselves. I want this to be done by only using the points location, no elevation ...
0
votes
1answer
507 views

How to clip mesh files with a mask, and calculate the (3D) area of triangles inside?

I have a georeferenced mesh produced by photogrammetry software such as Agisoft Photoscan. Within this mesh, I have some areas of interest, which I can define with 2D vector masks (on the x and y ...