All Questions
71
questions
0
votes
1
answer
297
views
Is there a DEM WCS for the whole globe?
I've found some for a few individual places, but I am struggling to find one for the whole globe.
North America | https://elevation.nationalmap.gov/arcgis/services/3DEPElevation/ImageServer/WCSServer?...
- 51
-1
votes
1
answer
148
views
Getting high resolution DEM for a location [closed]
As a part of my project, I want high resolution (10m approx) DEM for my desired location.
How and where can I get it?
I already tried with 30m DEM obtained from USGS.
I am getting blurry DEM, if I ...
0
votes
0
answers
22
views
''pixelatted'' ''griddy'' result from slope function (QGIS) [duplicate]
I use the SRTM downloader to download my DEM's, then it happens very often that when I create a slopemap there are weird artefacts in the slope map. Something I do before making the slopemap is ...
- 615
2
votes
1
answer
240
views
QGIS "Profile Tool" Plugin inaccurate reading
I'm getting an inaccurate reading from QGIS "Profile Toll" plugin as you can see in the image below.
Not only is showing incorrectly which of these two peaks is the highest, but also the ...
- 363
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 ...
1
vote
1
answer
2k
views
Seeking SRTM 90m data
I'm looking for 90 meter resolution SRTM data to coverage a large state in the Western US. I used to use Derek Watkins' awesome tile grabber for SRTM90: https://dwtkns.com/srtm/
but as he explains on ...
- 1,205
1
vote
0
answers
237
views
Using a DSM and DEM together to identify height above ground
A pretty basic question I feel, but its something I thought I understood and further reading has caused more confusion.
DEM is the topographical/elevation of the ground. DTM and DSM are pretty much ...
1
vote
2
answers
640
views
How to compress DEM SRTM files?
I'm trying to compress my 1.2GB DEM file to reduce its size through the OSGeo4W Shell, but it's not working, as the command only works for RGB images (3 bands), but my DEM only has 1 band (1-band).
I ...
- 472
0
votes
0
answers
296
views
GDAL Slope function not working with SRTM DEM data?
I'm a QGIS rookie trying to generate slope data for research projects in South Africa.
I've managed to download DEM data from Bing Aerial maps using the SRTM-downloader but cant get the GDAL slope ...
2
votes
1
answer
923
views
Failing to download SRTM data from USGS
I was used to download SRTM/DEM data from the following link: https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/
But I'm not being able to download anymore, I don't know the exact causes of that, it was ...
0
votes
1
answer
2k
views
Get DEM from Google Earth Engine
How can I get ASTER or SRTM DEM for years like 2016, 2020,... in Google Earth Engine? I can't filter date for SRTM DEM in GEE. It seems that SRTM DEM doesn't have multi-year data, it was captured only ...
3
votes
1
answer
159
views
Getting unexpected DEM spatial resolution using ArcMap
I have downloaded SRTM DEM 30 m. However, when I displayed on ArcMap, I got a DEM raster with 0.0002777 cell size.
How can I solve this problem?
- 33
1
vote
0
answers
190
views
Extracting Factors Causally Related to Landslides from DEMs (SRTM) [closed]
I have the SRTM dataset, and I've managed to write some python code to show elevation and slope heatmaps. The code runs fine, and the elevation data is reliable (I checked some points from the web), ...
- 135
2
votes
2
answers
2k
views
Prepare DEM in QGIS to open in Blender [closed]
I have been having trouble loading 30m SRTM files into blender.
I download the SRTM (DEM) 30m files from the earthdata (NASA) website and I would like to prepare them in QGIS (making mosaic, clip, ...
- 29
3
votes
0
answers
118
views
Raster artefacts after saving to GeoTIFF in QGIS
When processing DEMs created using downloaded SRTM data (initially HGT files) I produce a nice-looking product; however, saving this as a GeoTIFF creates square artefacts which are plain to see (and ...
- 345