The vertical and horizontal dimension of land surface

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3
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1answer
174 views

Can 2D polygon be used as hard breakline for terrain in ArcGIS Desktop?

I've been working with TINs for years and have only ever been satisfied when using 3D polylines for breaklines. I am currently transitioning to using terrains and after reading the documentation in ...
2
votes
1answer
199 views

NASA SRTM: precipitous contour lines in TileMill

I was trying to make a nice looking print map of Bali (Indonesia) in TileMill. After creating a terrain layer (using this walkthrough) I noticed that the island's coastline was precipitous. Is ...
1
vote
1answer
60 views

3D OSM buildings seems to be floating and shifted after adding terrain effect in Cesium

I had made a 3D view of the osm buildings using cesium. In which i had added a terrain effect using the standard cesium terrain provider as below var viewer = new Cesium.Viewer('cesiumContainer'); ...
1
vote
1answer
46 views

Free Digital Elevation (Terrain) Model of Europe or Germany

Is there any free (or not expensive) source of Digital elevation model of Europe or Germany with the resolution of 10 meters or better and vertical accuracy of +-5m or better?
1
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1answer
38 views

How to do unit conversion on a Terrain dataset?

I was wondering if there is a way to change the elevation units of a Terrain dataset (from example from meter to feet). Any idea/guidance is much appreciated.
1
vote
1answer
74 views

is there a gis web engine for displaying video on terrain?

i desire to display video on a globe surface on it's geographic position context. i prefer an opensource solution for displaying the video on map elevation model in web GIS application, but could ...
0
votes
1answer
42 views

ArcGIS 10.0 height statistics for polygon features: zonal statistics vs interpolate shape

I'm performing a fairly routine task, which is to add height information (from a 50m DEM) to survey polygons to work out mean height, as well as max and min. I've noticed that zonal statistics ...
0
votes
1answer
52 views

Unable to serve .terrain files in cesium sandcastle

I am learning 3d terrain generation using CesiumJS. I generated .terrain files usind Cesium terrain builder and kept them in 'cesium/apps' directory for testing purposes and to avoid CORS issues. ...
0
votes
1answer
106 views

Is there a difference between the two sets of QGIS terrain analysis tools?

Is there a difference between Raster/Terrain Anaylsis and the same features in Raster/Analysis/DEM (Terrain Analysis)? The two appear to do the same types of computations; are they the same or is ...
4
votes
0answers
65 views

QGIS Profile Tool shows no profile

I have installed and followed the process to produce an elevation profile from the Route Profile plug-in in QGIS, but for some reason I am getting no profile to appear. The grids are from OS ...
4
votes
0answers
36 views

Cropping EUDEM with GDAL creates zig-zag terrain

I have downloaded EUDEM (20 Gb) from http://www.eea.europa.eu/data-and-maps/data/eu-dem#tab-original-data When I try to crop it by GDAL using: gdalwarp -dstalpha -of EHdr -crop_to_cutline -cutline ...
3
votes
0answers
630 views

Creating one DEM from multiple ASC files

I am struggling with this several days and now its time to ask how to do it in QGIS. I have very detailed 27 ASC grid files with overall size of 9 GB created from 1m contours of large area (600 m2). ...
2
votes
0answers
63 views

Using Terrain Profile plugin with an interpolated raster

I am very new to QGIS and the goal of this exercise is to view an elevation profile of a river from a set of discrete points taken from surveying records. Steps taken: A vector layer was created ...
2
votes
0answers
111 views

High Resolution Terrain Data for the Philippines

Where can i download Philippines terrain data that is better than the 30 m ASTER global dataset?
2
votes
0answers
123 views

How to optimize color ramp for terrain

I'm working on a project to highlight LiDAR terrain on the web and part of the idea is to show the detail of the data at large scales. I've already read through the excellent Mapbox guide and I've got ...
1
vote
0answers
27 views

Terrain Profile starts a selected polyline-based graph in different directions

I´m trying to create some profile graphs with Terrain Profile in QGIS 2.10 Pisa, using LCP´s between a site and seven lithic deposits as polylines. When I select some of these lines, the graph starts ...
1
vote
0answers
50 views

Why do I get an error running Catchment Polygon Processing?

I am trying to run catchment polygon processing in ArcGIS 10.3, and this is what i get "error hresult e_fail has been returned from a call to a com component" Can you help me to debug this error?
1
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0answers
47 views

using openlayers 3 and three.js to use openlayers 3 map as texture

I am trying to use Openlayers 3 along with three.js to use openlayers output map as texture. I found that openlayers 3 is webgl based and so is three.js. So they must be compatible. What I have done ...
1
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0answers
30 views

How is “flat” defined in SAGA

SAGA has a feature that determines flats. Does anybody know how they define a flat? If I start with a raster, each pixel is flat - so it has to be more sophisticated than that. I would like to be ...
1
vote
0answers
69 views

Weighted averages: accounting for grid cell surface variation in proportion to the cosine of its latitude

Non-geographer learning GIS here. I'm using ArcGIS Desktop v. 10.2.2. I have a 30-arc second Terrain Ruggedness Index (TRI) raster file, and I want to measure the average ruggedness within each ...
1
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0answers
75 views

Checking if Terrain Model has pyramids or data sources using ArcPy/Python?

I asked this question in the ESRI forums and got nothing but a lesson on LAS point cloud classifications — not even remotely what I had asked. I’m hoping someone here can point me in the right ...
1
vote
0answers
52 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 ...
1
vote
0answers
67 views

texture fill doesn't display in ArcScene

My texture fill doesn't display properly in ArcScene but it does in ArcMap. What am I doing wrong? Help! ArcMap: ArcScene: The same texture fill has been selected in both ArcMap and ArcScene. ...
1
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0answers
31 views

GRASS GIS and Liss4MX

i am working on grass gis. how to use grass gis for liss4 of IRS-P6.I have to do atmospheric correction for hilly terrain data.i would like to use grass's i.atcorr. may i know the dependencies and how ...
1
vote
0answers
86 views

Is there an api for world terrain/biome data?

I'm looking for an api where I pass a lat/lng, and get "Desert" or "Mountains" or "Ocean" back. Just the general biome of the area. Most of what I've seen involves getting tiles back, so you can ...
1
vote
0answers
61 views

What kind of methods are most commonly used to interpolate a relief?

I have got a topographic plan with height measurements which I converted to point shape file with height value in attributes. I was wondering, what kind of methods are most commonly used to ...
0
votes
0answers
37 views

different results :Slope analysis in qgis vs ArcMap

I want to make slope analysis on geoTiff. I am using ArcMap and qgis. But i get different results, but both are in degrees. I ArcMap i recive range from 0 to 42 degrees, but i qgis it from 0 to 17 ...
0
votes
0answers
26 views

Enclosing building models from bottom (Missing GroundFeatures) using FME?

I have 3D building model of the city and I would like to export it to proper CityGML model. I am trying to find out, how to make an intersection of building and terrain in order to make ...
0
votes
0answers
135 views

Out of Memory and TIN internal processing error ArcGIS

So i have been developing a python script to streamline the process from converting a raw XYZ file to a full blown terrain file. However, in the intermediate process, I am performing a surface ...
0
votes
0answers
47 views

Cannot assign name to resultant terrain using ArcPy so cannot save result?

Question of python in ArcGIS: I can not assign a name to the resultant terrain, thus I can not save the result. I'm new to arcpy. By a piece of script using SetNull() in Raster Calculator, I want to ...