Questions tagged [tin]

Acronym for triangulated irregular network. A vector data structure that partitions geographic space into contiguous, nonoverlapping triangles.

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TIN interpolation QGIS - Voronoi Polygons

I'm trying to interpolate 12 points in QGIS linear within a Voronoi Polygon using TIN-Interpolation created for the points. However,the extent of the raster layer only interpolates between the points ...
Gus's user avatar
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Can't open IDW interpolation while I'm using QGIS 3.34

I can't open IDW and TIN interpolation. How can I solve the problem?
Kelvin的地理空間's user avatar
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TIN interpolation keeps discarding the original values of the sample and interpolates them as well

I'm trying to make a DEM in QGIS using TIN. I have a set of points with elevation data on one of the attributes. My problem is that when I generate the raster, the initial set of point values are lost ...
A rookie's user avatar
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Creating TIN from points using ArcGIS Pro

I need to create a TIN from a point shapefile with water elevation values. I need the TIN to extend to the end of a floodplain polygon (yellow lines in screenshot). Currently the TIN created stops ...
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Triangulated Irregular Network (TIN) as a type of data in GIS

I'm taking an online GIS course of a reputed university and the instructor categorized GIS data types as Raster Vector, and Triangulated Irregular Network (TIN). Now I know that TIN is a vector ...
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Export TIN mesh with QGIS

I realized a TIN mesh from isoipse with QGIS. I would like to export it, but the problem is that I can't export the file. How can I do this?
Salvatore 's user avatar
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Create 3D polygon of airspace above terrain

I have a LAS dataset of mainly vegetation and ground. I am looking to create 3D polygons in ArcGIS Pro that essentially fill in the space above the ground and flanked by the data (trees and bushes) to ...
Anonymous's user avatar
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TIN Interpolation in QGIS but with a predefined Delaunay triangulation

I have a set of points from which I am trying to perform a TIN triangulation. However, the algorithm for the triangulation (i.e. the resulting raster) creates triangles that I would like avoid for the ...
Tomas's user avatar
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Create surface from LiDAR and shapefile extents

I am trying to create a TIN surface from LiDAR points and the extents of a shapefile, so that the whole shapefile is filled with a surface based on the available point data. If I create a TIN surface ...
Nindooo's user avatar
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PostGIS TIN to Raster

I am trying to convert a TIN to raster, in PostGIS, with a 1m cell size but sampling the tin for elevations is very slow. My test data is about 2km x 2km and relatively flat, think farm field. Below ...
TurboGus's user avatar
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Merge several TIN in PostGIS

I have plenty of very tiny adjacent TIN chunks in a PostgreSQL 15 / PostGIS 3.4 database. I would like to merge them all into a single one. I've tried both ST_Collect and ST_3DUnion but they both ...
swiss_knight's user avatar
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Accuracy loss in tin to raster conversion

I use tin files created from lidar. Because the lidar points are direct measurements of the real world, I believe these tins to be the most accurate models of a surface I have access to. If I were to ...
Craig T's user avatar
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Fill in Basic Colours in Qgis

I'm trying to fill in a TIN interpolation to be a full 1:2 rectangle. When the interpolation is finished, the areas with no land cut off in the corner leaving it transparent, which causes issues for ...
Matthew's user avatar
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GDAL GRID Linear Interpolation Creating a Non Continuous Raster

I am using the GDAL GRID algorithm to create a raster from points using the Linear method. The points I have are generated from the river cross-section lines, and all have the same z value per line. I ...
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What is the difference between TIN vs MESH vs TERRAIN in the context of GIS?

I couldn't seem to fully understand the differences between TIN, MESH, and TERRAIN dataset formats in GIS. Per Wikipedia a triangulated irregular network (TIN)1 is a representation of a continuous ...
ar-siddiqui's user avatar
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Using TIN Interpolation algorithm in PyQGIS

I was doing Tin interpolation using pyqgis, and this algorithm has this complex param called INTERPOLATION_DATA, where I'm stuck to create a valid string by the documentation described. From what the ...
Cookie's user avatar
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Extract TIN mesh

I have a shapefile that I convert into TIN. The result is following: Now I want to extract a mesh based on this TIN to reach this: However I do not need TIN itself, I need only to save the mesh. I'm ...
Марина Лисниченко's user avatar
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TIN Interpolation method in QGIS

I am trying to interpolate 6 vector points in QGIS using TIN interpolation. However, I keep getting an error msg. For some unknown reason, it won't complete the interpolation. How can I fix this?
paul's user avatar
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Storing a large 3D TIN into a PostGIS database

I have to store a massive TIN (1.5 GB) into a PostGIS database to do some computations with it. After my first try, I was getting a "server closed the connection unexpectedly" issue when ...
swiss_knight's user avatar
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Speeding up a TIN to MultiPolygonZ conversion in PostGIS

I have a TIN record in a PostGIS database. It contains between 50'000 and 100'000 triangles: Based on this answer: https://gis.stackexchange.com/a/209845/65370 I'm trying for the moment to dump the ...
swiss_knight's user avatar
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Saving a TIN given as a Wavefront OBJ file into PostGIS internal TIN format

I was given a TIN representing a terrain as an OBJ file: I need to store it into a PostGIS database as the PostGIS internal TIN format. How could I do that? If needed I can have access to the ...
swiss_knight's user avatar
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Creating TIN using ArcPy

I am attempting to creating a TIN using arcPy. When I try, I receive an error saying "The value is not a member of . Failed to execute (CreateTin)." Is there any solution to fix this? I am ...
user204111's user avatar
2 votes
1 answer
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TIN interpolation in graphical modeler

I am creating a new script in graphical modeler. I have an input which is « vector field » as point. But when I use « TIN interpolation », I’m not able to select an « input of the model ». I can only ...
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Predicting future coastlines based on TIN/Raster DEM and elevated polygon using ArcMap

I am trying to figure out how I can create projected future coastlines by intersecting an elevated polygon (representing future sea level) with the TIN/DEM of my study area. Does anybody know how I ...
Jacob's user avatar
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2 votes
1 answer
628 views

Intersection of an arbitrarily oriented 3D plane with a terrain DEM

In a nutshell I'd like to compute the intersection of a 3D plane (defined by 3 points) and a terrain (given as a raster DEM GeoTIFF), and more particularly the part between two lines of that plane. ...
swiss_knight's user avatar
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1 vote
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TIN Interpolation Error in QGIS

I am having a problem with a contour file I got from a municipality. Two, actually. I was using 3.16 and it would just hang up at 99% and then fail. This happened with both files. I tried it again ...
Su Leone's user avatar
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TIN interpolation from LiDAR point data excluding no-data areas (for water)

I am working with LiDAR data for a specific marsh area. The data is in x,y,z point files. When loading this layer, it is clear that in the creeks of the marsh, no data points were measured with the ...
Marel_S's user avatar
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LandXML to TIN places TIN in wrong location

I'm using ArcMap 10.8 with 3D Analyst. I received a LandXML from a civil engineer, who I assume used Civil3D or similar to create it. The LandXML has several TINs representing existing surface and ...
Anna Riling's user avatar
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How to choose pixel size while doing interpolation in QGIS?

How do you choose pixel size X and Y while doing TIN interpolation? What determines the size?
Viktor Sulakvelidze-Skantz's user avatar
5 votes
1 answer
766 views

Adding z-value to the triangulation output from the TIN interpolation in QGIS

For a project I'm working on I need to do a triangulation over points (csv) or lines (dxf). When running the TIN interpolation from the processing toolbox I save the triangulation as a temp file. This ...
Lars81's user avatar
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1 answer
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Polygon Volume (ArcMap 10.7) calculates a volume of zero?

I'm calculating partial TIN volumes using Polygon Volume in ArcMap 10.7. I've done this hundreds of times using arcpy and for the most part, it works fine (Height Field = MAX; Reference Plane = BELOW)....
Florian Mlehliv's user avatar
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282 views

Error when executing TIN Interpolation with two sets in QGIS

I am trying to TIN two datasets using TIN Interpolation with XYZ points in QGIS. I keep getting this error: Traceback (most recent call last): File "/usr/share/qgis/python/plugins/processing/algs/...
CaptainAhab's user avatar
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0 answers
857 views

Doing TIN Interpolation in QGIS

I want to do TIN Interpolation on a layer but when I fill all the fields with the right data (vector layer, interpolation attribute, extent etc) the algorithm does not run and shows me this message: ...
Διονύσης Χρι.'s user avatar
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1 answer
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TIN interpolation out of extent [closed]

I have a problem with the TIN. I just started using QGIS because I no longer have access to ArcGIS. I want to create a reservoir bathymetry map from depth survey points. I created a polyline and ...
Farshad's user avatar
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XYZ LiDAR data to contours with QGIS

I need to prepare a 1m contour map for an area with LiDAR data (XYZ files, in a 1m grid). The files are a little large and there are 54 of them. I merged the files to a single XYZ file (which turned ...
Tharindu Dissanayake's user avatar
1 vote
1 answer
155 views

R: convert TIN to multipolygon with package sf

I have a dataset with three-dimensional dataset that has multipolygons and TINs with z-values. I would like to convert these into (multi)polygons. This is my example data: element <- st_as_sf( ...
Mario's user avatar
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1 answer
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Create TIN with modified resolution with arcpy

I have the polyline feature file myfeature.shp from which I create a TIN file: import arcpy arcpy.CheckOutExtension("3D") arcpy.CreateTin_3d("mytin","Coordinate Systems\CH1903 ...
stonebe's user avatar
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Extract terrain coordinates as seen from a viewpoint + FoV in a digital globe

Context Every one working with photogrammetry or 3D knows what a depth image is. For example OpenCV defines a "depth map" from a stereo pair, e.g.: where the darker a pixel is, the greater ...
swiss_knight's user avatar
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3 votes
1 answer
927 views

QGIS: Interpolate height value on polyline from point-values for use as breakline in TIN-creation

We use point heights from a survey to generate a TIN. In order to improve the quality of the TIN, additional break lines should be defined. These break lines shall receive the height information from ...
dwoe's user avatar
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2 votes
1 answer
140 views

Stopping FME TINGenerator processing unwanted nodes

I run an FME workbench quite often to convert .xyz point clouds to a LandXML TIN surface. I'm wondering if it is possible to stop the TINGenerator tool from processing the TINEdges, Triangles, and ...
Dùn Caan's user avatar
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TIN creation process generating error

I'm having trouble generating a TIN. Repeatedly, I obtain: ERROR 050035: no features were added to the TIN. I can't figure out what I'm doing incorrectly. There is only one feature, namely "...
Max Muller's user avatar
1 vote
1 answer
278 views

TIN interpolation to construct DEM shows strange triangulation

I'm working with QGIS and I am trying to create a DEM starting from a DXF containing the grid of points located at 5m from each other. The following picture shows the points imported: I used a TIN ...
Diego Talledo's user avatar
0 votes
1 answer
669 views

Interpolating z Values (height) from TIN (Raster) to line (vector) using QGIS

I have a raster (TIN) and I want to interpolate the heights (z-Values) to a line Shape. Everything that I find is interpolation between some points and making a raster. For example, Raster creation ...
Mohamad Reza Salehi Sadaghiani's user avatar
0 votes
1 answer
105 views

Editing TIN surface by polygon using ArcMap

I'm doing a 2D hydraulic flood study of rivers in a 63 km2 basin. I have a raster of the topography (1x1 meters) that I have passed to TIN using ArcMap. Giving a z=0.3 meters, I get a TIN network with ...
tromen's user avatar
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2 votes
0 answers
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Using ArcMap to build a Terrain DEM that looks exactly the same as a TIN built from the same point shapefile

I am attempting to replicate DEMs previously constructed as TINs in the Terrain format. Building a Terrain and a TIN out of the same point shapefile produces two maps that look extremely similar, but ...
jzieg's user avatar
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2 votes
1 answer
499 views

TIN Output empty raster and corrupted Triangulation network

In Qgis: I've got a point shape (EPSG:3398) with some height info and want to create a TIN interpolated raster with the Qgis TIN-Interpolation tool. But after running there was a raster created, which ...
David's user avatar
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1 vote
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298 views

Creating a TIN model from a .txt file

I am having an issue with creating a TIN model. My task is to create a map of Plymouth Sound for my UNI work. I have a .txt file with eastings, northings and elevation (Ill attach it). Due to covid ...
Sanger's user avatar
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0 votes
1 answer
881 views

Converting GOCAD .ts file to raster for ArcMap Analysis

I have a multi-layered (10 layers) GOCAD .ts file of data that I would like to convert into a series of rasters. The documentation says it requires a program capable of reading GOCAD * .ts (...
Rachel Rotz's user avatar
2 votes
0 answers
1k views

QGIS TIN Interpolation won't run (reports "Wrong or missing parameter value: Input layer(s)"

I'm trying to run the QGIS Tin Interpolation command, but get the following error message when I try to run the command: "Wrong or missing parameter value: Input layer(s)." The vector input to the ...
gt3's user avatar
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0 votes
0 answers
130 views

Why do layers disappear in ArcScene when I try to drape them to the TIN?

I'm new. I did see this was asked a couple years ago, but I didn't understand the answer. It said It's the projection. You're in ArcScene so be sure all of your layers are in Conic! I have no idea ...
BobT854's user avatar

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