All Questions
103
questions
0
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0
answers
67
views
DEM derived from LiDAR in wrong location
I am trying to derive slope and aspect from a DEM that was derived over a mine using LiDAR in ArcMap v 10.8.1 . However, the DEM seems to be in the wrong location (further North from the Area of ...
- 67
0
votes
0
answers
48
views
Creating non-smoothed / Stepped DEM from contours (ArcMap or ArcGIS Pro)
I am attempting to create an artificial DEM that is stepped / not smoothed (imagine the profile below). I have created contours for levels A & B
Topo to Raster produces a smoothed profile (see ...
- 1
0
votes
1
answer
51
views
Validating that the smallest channel extracted using ArcMap (Hydrology toolbox) from DEM is the first-order stream
In ArcMap, the 'Hydrology' tool under the toolbox 'Spatial Analyst' can be used to extract the stream network, as described in detail here: extract streams from DEM. One step consists of using a ...
- 141
1
vote
1
answer
55
views
Adjusting heights of two DTM rasters using ArcMap
I have two DTM rasters of a forest area. The base heights of the winter DTM must match the base heights of the summer DTM.
How can I adjust them using ArcMap?
- 11
0
votes
1
answer
119
views
Determining slope percentage using ArcMap
I am working on a project where I need to conduct a MCA. One of the criteria is: if the slopes are greater than 15%, they should not be used at all. I have DEM model and a slope has been made in ...
0
votes
0
answers
102
views
Processing a LiDAR image to be more detailed
I'm using ArcMap 10.8 to try and find old roadbeds. The DEM data I downloaded is very dark and shaded. You can't see anything at lower elevations. I have the hillshade effect turned on but you can't ...
- 1
0
votes
0
answers
11
views
When combining rasters how to reduce heights of regions having height above a limit in ArcMap?
I am trying to use DEMs extracted from USGS earth explorer, in my DEM there is a plane region (Ganga Planes) adjacent to high mountains (Himalayas). While combining DEMs of that region I want that if ...
- 1
0
votes
0
answers
76
views
DEM coordinates do not align other data layers
I recently downloaded Original Product Resolution (OPR) Digital Elevation Model (DEM) data for some analysis. The DEM does not align with any of the other data sets I have for the area.
I have ...
- 109
0
votes
1
answer
665
views
Digital elevation model versus hillshade for creation of cross-section In ArcMap
I am using ArcMap 10.8.
What makes for a better cross-section a Digital elevation model or a hillshade?
I am using the cross-section to identify and analyze faults and fractures.so far I have tried ...
0
votes
1
answer
169
views
Removing no data in raster (DEM) using ArcMap
I'm trying to work with this DEM in ArcMap, which is TANDEM. But, I have areas where the altitude is not normal, since it tends to shoot (which are the areas that look like clouds).
How can I fix the ...
2
votes
1
answer
1k
views
Converting a degree slope raster to a percent slope raster, without a DEM, using raster calculator
I've been given a raster of degree slope which I need to convert to percent slope. As the original DEM is not available and those who provided the raster want me to work with this one, I have to ...
- 123
0
votes
1
answer
695
views
Why does no interpolated line appear when I use the 3D Analyst to generate a elevation profile in ArcMap?
I want to generate an elevation profile based on a DTM with ArcMap 3D Analyst but the program does not show the the interpolated line.
I did the following steps:
Opening 3D Analyst, adding a Digital ...
- 1
0
votes
1
answer
550
views
Alternatives to Add Surface Information and Extract Values from points
I am trying to add elevation data to an attribute table and am unable to use Add Surface Information and Extract Values as I have neither the spatial analyst nor 3D analyst license.
Are there any ...
- 23
0
votes
2
answers
398
views
Determining elevation of polylines using ArcMap
I am attempting to determine the elevation of about 100k different polylines. I have an associated DEM for my state that is in the same coordinate system.
What tool(s) could I use to determine the ...
- 23
-2
votes
1
answer
143
views
Extracting specified elevation value from mid point of valley along cross section based on DEM using ArcMap
I am using ArcMap. I need to extract the intersection point of the cross section line (blue line) where it intersect with the height variation value of 5m in both sides of the section from the mid ...
- 63