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

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114 views

ST_Within for TIN or 3D objct in PostGIS

I would like to query if a point is located in the TIN object. My TIN object is closed (convex hull) object (i.e. surface of a round object). I tried to use ST_Within, but the error message returns ...
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51 views

by 3d dxf to shp with field height

I have a question from a DXF file " topographic precision 3 cm " with 3d polylines to get one shp line with information 3d is possible?
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78 views

Is there a way to visualize TIN surfaces for web-mapping purposes?

I have created a TIN data set of electricity consumption. It is visually appealing, and often times TINS help the map reader understand geographical relationships better. Are there methods to ...
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37 views

ArcGIS Raster To Multipoint Mac/OSX alternative

Is there an alternative to the ArcGIS Raster To Multipoint tool for Macs? The VIP thinning method is particularly of use. A comparative point cloud thinning/simplification tool to this would just as ...
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66 views

How Can I Create a Tin from Elevation Points in QGIS

I have a shapefile of points with values that represent elevation at the given point. I know that I can create a TIN from these points, but the fields in the TIN do not represent the elevation. ...
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29 views

Clipping TIN layers to pit shells

I have two TIN surfaces, one being a pit shell and a second being a horizontal layer which intersects the shell on all sides. I need to find out the volume between the intersection horizontal layer ...
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53 views

How to convert ASCII file to TIN where XY is YX in ArcGIS?

I have some ASCII files (you can download it from: http://analizasan.kvprojekty.pl/underwork/gisse/M3451Ca1.zip) that I would like to create TIN. First I used "ASCII3DToFeatureClass" tool to create ...
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38 views

Surface Difference TIN Output in ArcGIS | Python Code

Why does the output TIN option does not work when executing it through a python script or a model builder simulation run? As you will see in the messages below, the surface difference successfully ...
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62 views

Clipping TIN in ArcGIS for Desktop?

How can i clip this TIN and form like the polygon.
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64 views

Want to intersect a polygon of a certain elevation with a tin surface

so I want to generate a flood plain for a river in ArcMap. Basically this means that I want to create polygons with certain elevations above the drainage point elevation (870 m). For instance I would ...
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17 views

Generating TIN, manually modified level curves?

Having trouble while generating a TIN on a manually modified topography file. I'm a newborn of ArcGis, but I intensively tried to fix this bug, with no result. As you can see, the bug deals about ...
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88 views

Finding the slope of a polyline in QGIS 2.2 Valmiera

I am trying to find the average slope of a water course. I've drawn in the water course as a polyline over a large number of contour lines (the water course is long with a very large catchment area). ...
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160 views

Creating Triangulated Irregular Network (TIN) in QGIS?

I want to create a TIN and view it in 3D in qgis. The tin am creating using interpolation plugin is a raster TIN but i want the normal TIN(vector TIN).
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119 views

Is the TIN created out of several cross sections different from merging the TINs created out of each set of two cross sections?

I have a river with cross sections that have the water surface elevation values. I am trying to create TIN from the water surface values and then compare it with the topo (to see the flooded areas). I ...
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32 views

How to create “undulating terrain” for playground in ArcGIS?

How could I create undulating terrain in ArcGIS? I know I could create it by creating a TIN model but first I need to have "input data" - shapefile with Z (height in attribute). Is there any way I can ...
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89 views

Creating TIN, Surface Difference python script with ArcPy?

I have been trying to develop a master script to go through a series of geoprocessing tools and executing them. I am trying to generate a TIN and contours from a raw xyz file. Below is a very simple ...
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189 views

How to read .adf (TIN) map files?

I have a set of maps in few formats : TIN ├── [4.0K] info │   └── [2.6K] arc.dir ├── [ 708] log ├── [374K] M-33-45-D-d-4.asc └── [4.0K] m-33-45-d-d-4tin ├── [ 96] tdenv.adf ├── ...
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67 views

How to define disturbed/clipped contours elevation for Volume Polygon?

I want to calculate surface volume for different layer on TIN surface. I am working on an area in Norway which is 1 km * 1 km. The aim is to calculate surface volume of different imaginary elevation. ...
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340 views

TIN to Raster Tool, output elevations are 3.40282e+038 and -3.40282e+038, tried calculate statistics didn't work

I have an input TIN file that I created using Create TIN. The elevations are all correct. When I convert the TIN to Raster using the tool, my output elevations are 3.40282e+038 and -3.40282e+038 ...
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65 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 ...
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13 views

How do we change the TIN mesh so that new TIN has only triangles with slope less than some certain value?

Suppose TIN grid has a plane topology with terrain composed of slope B and slope A. How do we change the TIN so that plane topology has only terrain of slope B? Our problem nature is from ...
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35 views

Using Raster Calculator with Elevation Data from Contour Map

I am following this tutorial to attempt to determine flooding in the Gulf region based on estimated rises in sea level. I have taken topographic maps from the USGS and used to contouring tool to turn ...
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38 views

Calculating minimum elevation surface between two (or many) surfaces

My input files are a series of layers with data points of values (numbers/doubles), either in a 25x25 meter grid, or with data points randomly strewn. Resolution and extents do not match up between ...
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46 views

Generating a TIN Model

I am having a problem creating a tin from a polyline shape file . The shape file was created by exporting from a .dwg polyline layer. The shape file has a field of elevation data . However, when i ...
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64 views

3D Analyst Extrude Between

I have a few TIN surfaces at different elevations, basically soil profiles, I've used the "extrude between" tool to create multipatch features. However, only one of the features says it is a closed ...