Acronym for triangulated irregular network. A vector data structure that partitions geographic space into contiguous, nonoverlapping triangles.
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1answer
50 views
TIN Classes to a layer ARCMAP 10
Just wondering if there is a method of creating a layer for each classification range in a TIN.
Another way to state my problem:
I would like to make each colour code a layer that I can "turn on and ...
1
vote
1answer
22 views
How to calculate volume of bund around pit from TIN and external feature edge
I need to do some volume calculations of bunds. I suppose I should use the Surface Volume tool in 3D Analyst of ArcGIS. Here is the tool description. I am uncertain about the plane height parameter, ...
0
votes
1answer
24 views
Extrude Between Tool not working for me
I am having an issue with trying to use the extrude between tool in ArcScene. I had 8-9 geologic formations that I would like to create a 3d polygon of these formations. My workflow process went ...
7
votes
3answers
762 views
How to create TINs in ArcGIS from triangular elements
I am working with FEM models with triangular elements, and I'd like to view the results as TIN surfaces in ArcGIS (and in ArcScene). In my external source, I have nodes (with X,Y,Z coords) and ...
1
vote
1answer
159 views
VRML export issue ArcScene
when I try to export simple Tins (or documents which contain Tins) from my ArcScene to .wrl the export fails. Please see my example:
I have the following table (xlsx):
X Y hoehe
28 -2 0
-2 ...
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1answer
73 views
Making a subsurface TIN model
I had been very glad if any of you have time to help me.
I am a student and currently writing a thesis.
In this paper I will create a 3D model of a glacier, where I will show the internal structures ...
3
votes
1answer
87 views
Extrude between wrong on the edge, ArcScene
I'm trying to extrude between two Tins which are equally shaped. However if Extrude Between those tins using input feature created by minimal_bounding from one of them I get a strange error that two ...
0
votes
1answer
45 views
TIN when generated goes off the limits ARCGIS 9.3
i have to creat TINs for a specific areas so the original points or countours are exactly whithin the geographical limits of the area, but when i generate TIN it goes out of those limits and its ...
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vote
2answers
135 views
Problem creating TIN from multiple contour shapefiles with ArcGIS 9.3 Spatial Analyst
I have about 20 shapefiles that contain contours lines, and I'm trying to convert them to one TIN using Spatial Analyst in ArcGIS 9.3. I included all of the SHP's as input to generate a TIN, but it ...
1
vote
0answers
67 views
Problems with river profile extracted from tin
I extracted a longitudinal river profile from a tin that was created from Lidar data. The result looks like stairs/steps with regular intervals rather than like a smooth river profile. I know that ...
5
votes
1answer
2k views
Which is better, DEM or Triangles (TIN/Terrain)
Which is better DEM or TIN?
What are the benefits/negatives of each?
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votes
4answers
256 views
TIN interpolation crash in Qgis
I have problems using the function TIN(linear) interpolation in Qgis. The program crashes when larger areas is interpolated.
Map properties:
vector map,
Geometry typ = Point,
features in this ...
2
votes
2answers
302 views
Can I create a TIN from contours lines (shp) in QGIS?
I need to do a slope analysis, and would like to make a TIN from 2m contours lines. Or do a slope analysis directly from contours? The only DEM available is not precise enough. I do not have any ...
3
votes
1answer
400 views
DEM: How to convert a mosaic dataset to TIN?
I merged several DEMs together in on single DEM with mosaic dataset.
Now I wanted to convert this mosaic dataset in Vector with TIN. But when I use the tool (3D Analyst Tool) Raster to TIN comes an ...
2
votes
1answer
636 views
TIN Interpolation using a vector layer
I'm writing a plugin in QGIS and I'd like to generate a TIN surface using a vector layer with x,y and z (interpolation attribute).
The idea is to visualize the same result like in the Interpolation ...
4
votes
1answer
462 views
TIN Creation from 3D Contour File
I'm currently trying to import a 3D contour file into a Quantum GIS project. My question is, how can I export the DXF file from Microstation with height information? I already have imported it to the ...
6
votes
3answers
440 views
Generating a TIN from a DEM without ArcGIS
I'd like to generate a 3d terrain model moving from a DEM dataset (currently in shp and GeoTIFF format). As far as I understand it, the first step of the better path would be generating a TIN, but I ...
2
votes
1answer
175 views
Script for Editing TIN in Arcgis: modelbuilder works, when exported as script gives an error
Arcgis can give such a headache!
I want to automate loads of small tasks, and so I need to edit empty TIN with python in order to create a full TIN.
My srcript is giving errors, so I tried by hand to ...
3
votes
1answer
124 views
Intersect multilinestring (A) with multilinestring (B) retaining linear sequencing in resultset? [closed]
I have a PostGIS table testtin2 which is a sort of pseudo TIN consisting of a single multilinestring geometry, which I am intersecting with another table align, also a multilinestring, to generate a ...
5
votes
1answer
97 views
Representing a TIN in GeoJSON
Regarding the GeoJSON representation of a TIN, are there
any specifications or
existing implementations I may not be aware of?
You could probably hack one together using the multipolygon ...
6
votes
1answer
249 views
Problems creating TIN from British Columbia DEM data
Is anyone familiar with creating a TIN using ArcGIS9.3 and British Columbia DEM data (.GEN files)?
I can't figure out how to get the breaklines to work during the creation of the TIN. Using ...
1
vote
0answers
47 views
How to get the nodes on the absolute boundary of a TIN with ArcObjects
I am trying to get only the nodes on the absolute boundary of a Tin. But GetNeighbor or LeftTriangle methods return edges whose nodes have NaN Z and very weird X-Y coordinates, so the row is inserted ...
3
votes
1answer
78 views
TINs: What advantage does unequal sampling of data points have over regular sampling?
Triangulated Irregular Networks. Under what conditions is one sampling method more appropriate over the other?
7
votes
1answer
352 views
(Smooth) Isoline Extraction from TIN - Algorithms
Can anyone point me to a clear document or algorithm for extracting smooth isolines from a Triangular Irregular Network? I've seen some examples using the jagged linear methods, but can't seem to ...
11
votes
4answers
309 views
Given a list of surveyor points, what is the algorithm used to simplify the points and retain the terrain characteristics?
Given a terrain and surveyor points sampled from from it or from its contours, is there any algorithm that one can use to simplify the points ( i.e., reduce the surveyor points number) and at the same ...
5
votes
3answers
602 views
getting from a DEM to points that could be used for a TIN
I have a DEM, and would like to create a set of points that I can use to make a mesh for a 3d modeling program, such as Maya, Blender, or SketchUp. If I were to make a TIN from a DEM in ArcGIS, ArcGIS ...
5
votes
4answers
647 views
Addition and Subtraction of two TINs
I am referring to the paper here, section 2.6.1.
Is there an existing library ( in C++ or .Net) that already has this implemented? Namely, taking two Triangulated Irregular Network (TIN), we create a ...
9
votes
1answer
305 views
Performing Overlay of Two Triangulated Irregular Networks (TIN)
I am referring to the paper here, section 2.6.1, on the adding and subtracting of two TINs:
The addition of two TINs can be
determined exactly and stored into a
new TIN, because the addition ...
