Questions tagged [hillshade]
A hillshade is a grayscale 3D model of the surface, with the sun's relative position taken into account for shading the image.
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Why do hillshades from Image analysis look much better than the hilshade tool in ArcGIS?
I have been hoping to make my workflow a little more automated, but the hillshades that result from the hillshade tool just don't do it since they have a static look to them. I've tried to play around ...
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131 views
DEM produces pixelated hillshade when CRS changed to WGS 84 / UTM
UPDATE:
I now realize my problem with pixelation occurs when I change the CRS to WGS 84 / UTM. Anyone familiar with why this would happen or how to avoid it?
ISSUE:
I am having trouble with hillshade ...
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How to generate a DEM from a 3D point cloud in MATLAB?
I'm trying to generate a DEM (or a DSM if that works for this purpose) from a .ply point cloud in MATLAB so that I can generate a hillshade from it and this is what I have managed so far but have no ...
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ESRI Terrain Tools Sky Model Fail
I installed the Terrain Tools 1.1 in my ArcGIS 10.4 and ran several scripts (MDOW, etc), but the SkyModel failed a bunch of times with the pre-built points.
The Sky Model is a quite unusual script, ...
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1answer
61 views
Identifying and quantifying gullies and hags from aerial imagery in QGIS
We are involved in an extensive peatland restoration project in the Shetland Islands. We provide high resolution and accurate digital surface models and orthomosaics for initial analysis and on-going ...
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Gdaldem hillshade noisy artifacts
Running the command:
gdaldem hillshade in.tif out.tif -z 30
I'm getting artifacts like:
and at -z 1:
How might I correct this? Here is the gdalinfo for the input GeoTiff. All dimensions should be ...
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33 views
Reduce noise in QGIS hillshading [duplicate]
I'm using QGIS 3.12's Raster -> Analysis -> Hillshade tool on a fairly coarse DEM provided by the British Columbia provincial government.
The DEM has elevation values between 500m and 2650m, so a ...
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80 views
Weird output from hillshade tool in ArcGIS
I am quite new to working with ArcGIS 10.7.
I have a .grd Raster which I interpolated from some data in Surfer (see first picture below). Cell Size is 1m, it is projected in ...
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Why does “Render Type Hillshade” look so much better than results from GDAL hillshade?
I have a DEM and it looks pretty good when displayed using QGIS 3.10 built-in hillshade visualization:
But not good when I run Raster terrain analysis hillshade or GDAL Hillshade from the Processing ...
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55 views
Why is my DEM layer turning black when I apply multidirectional hillshade effect?
I'm quite new to QGIS, and am experimenting with the hillshade effects. I've imported a DEM layer, and am simply trying to render it as a multidirectional hillshade. Every time I click the "...
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Slope and hillshade layer not continuous in QGIS
I have been trying to create slope and Hillshade rasters from a DEM raster, which is in UTM11N. I tried different ratios (vertical to horizontal) but everything is in meters so it should work fine. I ...
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333 views
Hillshade function calculation: ValueError: Received a NULL pointer
I'm trying to get a raster from a DSM running the following code from python libraries osgeo-gdal in python qgis console:
import pandas as pd
from osgeo import gdal
df = pd.read_csv(azimut_altitude....
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3answers
596 views
How to create an “arcgis-style” hillshade?
I came across some high res DEM and would like to create a quality hill shade.
Target quality should be ESRI's world_hillshade as shown here:
https://services.arcgisonline.com/arcgis/rest/services/...
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2answers
704 views
Making elevation contours of raster smoother using QGIS
I am using QGIS 3.6.
I have raster of Europe map which I want to make a colored relief model.
After duplicating the layer, used hillshade on backward layer and colored the upper layer interpolation >...
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Is there a way to independantly hillshade the overviews of a GeoTIFF pyramid in GDAL?
Is there a way to get gdaladdo, gdaldem or another GDAL tool to create a hillshade where each overview is shaded from the corresponding overview in the DEM rather than by resampling a single full ...
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QGIS Hillshade from a specific “light” source in space, not azimuth/altitude of light
I am trying to determine locations on a map that will have a clear line of sight to a satellite in geostationary orbit. Given a terrain raster I'd like to determine what areas of the map are in the "...
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Ortho imagery overlapping a top of Hillshade
I have a hillshade mosaic dataset made from DEM and I also have another mosaic dataset made with a aerial photo.
I will like to overlapping so I can see both layer together, however I don't want to ...
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2answers
120 views
Hillshade not displaying correctly in ArcGIS Pro?
I have a large DEM of England that I have clipped to my study area and have been trying to generate a hillshade from. I tried a few variations with the parameters in altitude and azimuth (leaving z =1)...
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54 views
Rescaling DEM for Blender
I'm working on getting some DEMs ready to bring into Blender to render hillshade. I've done this successfully before with low elevations, but on my current project mountaintops seem to get cut off.
...
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1answer
433 views
Making colored hillshade in QGIS?
Today I found that ArcGis can make colored hillshade like on piture below.
Here is link to their blog. I want to do that in QGIS. I know about layer coloring feature, and it's close for perfect, but ...
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1answer
76 views
Which layer for least cost path analysis
New QGIS user here, so maybe it's kind of a stupid question. I want to calcualte the least cost path between two points but I don't know which layer to use. I have two layers, one is a hillshade layer ...
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1answer
36 views
R scripting for hillShade
I'm trying to use a csv table with angle and azimuth values to compute a hillshade on the same area at different dates.
I'm using for and each date to extract the correct values, but it doesn't seem ...
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110 views
What should I set vertical exaggeration to in gdaldem?
In the comments to another question I suggested that I would use a value of between 5 and 7 for the vertical exaggeration in gdaldem. The questioner pointed to the ESRI docs where they suggest a value ...
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Hillshade input field for z factor keeps rounding value in QGIS?
In QGIS 3.8.0, the Hillshade tool
when I try to input the value for the z-factor which for my case should be
0.00000956 exactly, after you remove focus of the input field QGIS rounds that number to 0....
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2answers
530 views
Remove border lines of SRTM tiles rendered as hillshade
I have downloaded several SRTM DEM raster tiles from https://dwtkns.com/srtm30m/, and created hillshade versions from the tiles. However, upon closer inspection, the hillshade tiles now have border ...
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1answer
406 views
QGIS Hillshade Too Dark
When producing a hill-shade from Raster_>Analysis->Hill-shade in QGIS, I cannot stop my hill-shade from becoming too dark, leaving massive parts cities to be black.
I have tried the extremes and in ...
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1answer
225 views
3-D Terrain effects for vectors in QGIS?
I'm a bit new to QGIS, and making a few maps of roads through mountains. I'm looking to have a 3-D effect within my 2-D map.
I got a DEM, made a hillshade, and blended a basemap over it. Nice ...
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Using DEM to find permanently shadowed craters
I'm using ArcGIS Pro to try to identify permanently shadowed craters on the North Pole of the Moon. Pictured below is a screenshot of the DEM I'm using which was collected from the laser altimeter on ...
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1answer
316 views
How to Save as in 1 GeoTIFF file the hillshade raster and colored raster layer in QGIS 3.4.4?
I have a raster GeoTIFF of western Mediterranean sea and i want to apply the hillshade model with colors as the tutorial explains (Create great looking hillshaded maps in QGIS). After i finished my ...
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Batch processing DTM with Hillshade in QGIS 3
I'm using the Hillshade tool from GDAL library [Raster analysis] in QGIS 3.4.
I can't use the batch process with creative options like compress=LZW or profile=Geotif. It doesn't work.
The tool works ...
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1answer
140 views
PyQGIS: GDAL hillshade patchwork effect
I have used QGIS to batch import and visualise tiled elevation data. This is illuminated greyscale, with identical parameters used each time, so I would have expected the result to be seamless and the ...
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Hillshading all tiles by default in QGIS?
I've downloaded a zip of img files from the TN Lidar page, but see no useable tilemap to know which tiles I actually want to look at (the whole zip was over 4GB amd 600 tiles). I'm only wanting to ...
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76 views
Disappearing Pixels on the edge of Hillshade raster
When I've created Hillshade in ArcMap and received the output raster, I've noticed that output Hillshade has one pixel less than I have in the source DEM. It doesn't matter where I create it (...
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1answer
1k views
Using Color Ramp Manager Plugin in QGIS?
I followed instructions mentioned here and installed the Color Ramp Manager by choosing install experimental plugins as well.
Now, when I go to Properties > Style > Single Band PsuedoColor and I ...
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110 views
ArcGIS hillshade creates artifact on tile boundary
I'm working with ArcGIS on a DTM made of 1x1km tiles (cell size 20cm). When I try to create an hillshade model based on this DTM I get visual artifacts on tile junctions, whereas there are no visible ...
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Displaying raster data export from temp folder using ArcGIS Desktop?
I'm coming up against a fairly unusual raster display issue I haven't encountered before. As a caveat, I'm not the most experienced at working with display of raster data, so I assume (and hope) it's ...
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What is the difference between these two CRS and why affects the hillshade rendering?
I am working with a 2m rater files which are in the Swedish SWEREF99 18 00 (EPSG:3011)
The Proj4 information when selecting the CRS with the EPSG code inQGIS is:
+proj=tmerc +lat_0=0 +lon_0=18 +k=1 ...
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1answer
594 views
Hillshading makes crater-like depressions look elevated?
I have a 1 m resolution DEM of the seafloor of a field of depressions. Hillshading the DEM makes the depressions look like mounds instead.
What I can do to fix this?
My raster is projected in UTM, ...
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232 views
ASTER DEMs multidirectional hillshades
I am trying to produce a multidirectional hillshade from ASTER DEMs in QGIS. basically I am trying to achieve something similar to this
which is a screenshot from this layer https://services....
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1answer
142 views
Automatically detecting relief in flat areas from hillshape for marine bathymetry using ArcGIS Desktop?
I am trying to identify areas of interest in the ocean around 30-150 m that have some "topographic relief" compared to their surrounding areas. I did this manually by looking at the hillshade and ...
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116 views
Multiple GDAL operations on Raster Dataset without opening and closing files multiples times
I'm going to start writing a script, likely in python, where I need to open a raster file, reproject it, multiply it with a slope-shaded elevation model then save the full res outcome as well as ...
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1answer
163 views
geotools hillshading dem
I'm currently trying to apply shade relief effect to dem raster layer(geotiff format, one band with float samples, min and max are around 77 and 100) using geotools. I've tried diffrent parameters ...
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Esri Terrain-Tools v1.1 Sky Tool Cannot Save File
I am trying to use Esri Terrain-Tools v1.1 with ArcMap 10.5 to create a hillshade from either a 90 m SRTM DEM or 30 m DEM. I have tried saving this to a file geodatabase (FGDB) and .tif. In both cases ...
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Hillshade shows grid texture artifacts
I tried to make an hillshade and a slope map from a DTM using QGIS but the result shows some artifacts.
As you can see in the picture there is a grid texture in the hillshade and the slope map.
I ...
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Need some help with a hillshade [duplicate]
I've been using GIS for a dissertation project and am having a little trouble with using a hillshade on a specific DEM.
My project is looking at Cyprus, and as such I've looked around and found a ...
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2answers
2k views
How to convert 4band RGB/A GeoTiff to 1band Gray GeoTiif?
I'm creating slopeshade images from a DEM. What I'm doing is:
gdaldem slope -alg Horn -s 1 -compute_edges -co BIGTIFF=YES in.tif /vsistdout/ | \
gdaldem color-relief -co BIGTIFF=YES -co TILED=YES ...
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1answer
194 views
Hillshade error: output values all equal 180
I am having trouble producing a hillshade using the ArcGIS spatial analyst (hillshade) tool. I am working with a 1m DEM in a projected coordinate system (GDA_94_MGA56) and have adjusted the Z-factor ...
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1answer
343 views
How to create hillshade models every hour for a zone with GDAL
I´m trying to calculate the hillshade models from a zone for every hour during one month. I´m using the GDAL, gdaldem hillshade (I don´t know if there is another tool/library).
The problem is how to ...
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237 views
How to remove parallel stripes from DEM in QGIS or GRASS? [duplicate]
I have DEM (*.tif) from which I need to create shaded relief in GRASS/QGIS.
Problem is that it appears to have some parallel stripes all across the raster, as on picture below.
I used resampling ...
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1answer
188 views
How can I get the original DEM from a hillshade raster (GeoTiff)?
The problem is that the hillshade raster has a zfactor of 1.4 and for hydrological tool I need the real data. I tryed to divide the whole raster with raster-calculator with a factor of 1.4 but it ...
