All Questions
Tagged with dem arcgis-10.1
52
questions
2
votes
0
answers
79
views
Obtaining a smoothed DTM?
I am use AcGIS 10.1 and have a DTM with an 8 m grid resolution. Which tool could I apply to smooth the surface?
- 71
0
votes
1
answer
326
views
Saving WMS locally as raster DTM?
I am interested in a DTM made available via a WMS service. I do know how to add the DTM as layer in ArcGIS (10.1 advanced lisence), but I do not know if it is possible to save the DTM (or part thereof)...
- 1,536
-2
votes
1
answer
461
views
Using a DEM to identify areas that are below the surrounding ground by a given value?
In ArcGIS 10.1 (advanced license) I have a bare-earth DEM (5m cell size) and I would like to identify depressions which at least, say, 4 meters below the surrounding ground.
What I have tried is to ...
- 1,536
1
vote
2
answers
131
views
How to modify a DTM in order to show the sea level around an island?
In ArcGIS 10.1 (advanced license), I have a DTM representing a small island. Of course, off-coast cells are given NoData. Now, I would like to have those off-coast areas set to 0, i.e. sea level. I ...
- 1,536
1
vote
2
answers
1k
views
Cell size in Mosaic to New Raster versus Resample cell size
I have several TIF 2 meter LIDAR DEM files (100+) that I am merging into a single raster and then creating 4m, 6m, 10m, and 30m DEM raster variants.
I would normally just use the Mosaic to New ...
- 19
2
votes
0
answers
569
views
How to calculate Fractal dimension from DEM [closed]
I have a digital elevation model of a sea floor topography, and I have already creat TIN, shp, ras of this zone (only X, Y, Z(depth))
To calculate the topography complexity, I think fractal dimension ...
- 21
1
vote
1
answer
133
views
CHaMP Topo Processing Menu not active in ArcMap 10.1
After converting a .tiff file to TIN, I have now installed the CHaMP Topo Processing Add-In which should allow me to convert Topo TIN to DEM. However, after installation, the entire toolbar is grey ...
- 35
1
vote
0
answers
106
views
Reproduce a raster with same cell size but different no of columns and rows
I have a DEM raster of 200m resolution, the no of columns and rows are 2458 and 2845, I want to reproduce this raster in a way that the cell size remains the same i.e. 200,200 but the no of columns ...
- 11
2
votes
1
answer
961
views
How to calculate mean elevation in a DEM between a specific interval?
I have a DEM with different elevations between 100 m & 3828 m.
I just want to calculate mean elevation higher than 1500 m? Can I do that?
- 21
1
vote
0
answers
95
views
Individual tree extraction [duplicate]
I would like to extract individual trees in ArcMap 10.1. I have 1.3 meter resolution DSM data created from aerial images. I used Crown Height Model to extract tree heights (as attached file), but I am ...
- 894
2
votes
1
answer
1k
views
Reclassifying a DEM using ArcMap 10.1
I have a DEM that am reclassifying into two classes. One areas less than or equal to 1000 and the other areas greater than 1000.
Am accomplishing this using the reclassify Tool in ArcMap 10.1.
The ...
- 488
1
vote
1
answer
1k
views
DEM Processing in ArcMap
I have a question regarding DEM. I have downloaded SRTM DEM 30 m and I did a mosaic for the data using Mosaic tools in Arcmap to a Mosaic to a new raster. However, I got a DEM raster with values of 0-...
- 13
1
vote
2
answers
2k
views
Masking out places with elevation below 5 m from a DEM
I have a DEM of a study region; I want to modify the DEM in order to reflect the coastline outlook when the sea level was 5 meters higher than today. What I have done so far is to use 'Raster ...
- 1,536
0
votes
1
answer
4k
views
How to extract points from a Digital Elevation Model in ArcGIS 10.1?
More specifically my question would be if there is a way to create a grid over the digital elevation model in GIS and extract points, or elevational data, from the intersecting points of the grid?
I ...
- 1
0
votes
1
answer
69
views
Intermediate files disappear in ArcGIS 10.1
I am working with ArcGIS 10.1 creating some slope and aspect files. I do this:
DEM_park = ExtractByMask(mosaic_name, park_area)
and it creates the DEM_park file in a default gdb with a default name. ...
- 311