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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174 views

getting strange “grid” artifacts when creating hillshades using gdaldem

I'm trying to create hillshades from Czech elevation data (Fundamental Base of Geographic Data of the Czech Republic (ZABAGED®) - altimetry - grid 10x10 m) - a demo files is available here: ...
0
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1answer
176 views

Make permanent layer in ArcMap, Image Analysis Functions to display hillshade

I use ArcGIS 10.2.2. I want to make relief map, so that it looked good at all scales. I use hillshade function but after Export data relief looks good only in one scale. I use this method Using ...
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1answer
168 views

Smooth hillshade in all scales in ArcGIS Server 10.2.1

I publish relief map on server and view his on arcgis.com map. But in export i can change dpi from 96 to 300 and result smooth Any ideas how i can do so that the hillshade was smooth in all ...
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2answers
139 views

Where is World hillshade free download?

i need world hillshade with resolution about 1x1 km. Do you know where i can it download ?
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2answers
52 views
0
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1answer
28 views

gdaldem hillshade using command to calculate hillshade of whole folder

I need to calculate hillshade of folder using gdaldem hillshade which has 60 files in it. How can i do it using command prompt window.
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0answers
17 views

Trying to make one file out of many Hillshade files

I am trying to make a hilshade file for all of Colorado but when I download the DEM data for the state there are over 25 files. I have converted them all to hillsahde, but now I want to work with just ...
4
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1answer
71 views

How to calculate an Illumination raster for fire ignition danger analysis?

I am doing a fire ignition danger analysis using this equation that I found in Millington (2012) http://www.jmecology.com/wp-content/uploads/2014/03/33-42-MILLINGTON.pdf IR = 4H + 3V + 2I – E Where: ...
2
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2answers
67 views

Finding DEM/HIllshade sources California

Creating watershed maps for schools. I want to color ramp the elevation to show low and high points. What kind of files do I need and where to find them?
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0answers
30 views

QGIS - .vrt DEM layer only partially goes to hillshade

I am using QGIS 2.12 on Macbook Pro running on Mac OS X Yosemite 10.10.5. I have six adjacent DEMs of the 7.5-minute quadrangle size (National Elevation Data or NED, I think). I loaded them into a ...
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0answers
51 views

What is the usefulness of the angle and direction of the sun parameters in hillshade?

These parameters refer to the angle as of elevation and direction of the sun hypothetically to the hillshade but why does that must have any importance?
5
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2answers
189 views

Sun azimuth on shaded relief LiDAR maps

I have a LiDAR map and want to change the view so that the ground shadow is manipulated (looking for archaeological anomalies). I think it is the sun angle that I need to alter but I don't know how. ...
9
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2answers
1k views

Combining high resolution and generalized hillshade rasters to produce enhanced shaded relief?

I often add LiDAR data to a map along with a shaded relief. Most of the time I have to generalize the LiDAR DEM depending on the scale of the map. Still, there is often too much detail and mountain ...
0
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2answers
79 views

Hillshade transparent for plain areas

Normally, when you use a hillshade as a layover in ArcGIS, you set the transparency at 80% or so (in the Layer Properties, display settings). As a result, the underlying layers, for example land use, ...
19
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3answers
907 views

How to create transparent hillshade?

I get elegant transparent hillshades via a combination gdal and convert. Compare to grey-based hillshade commonly used, such transparent hillshades are very cool because they can be placed between the ...
0
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0answers
49 views

Search for hillshade for Colorado

I'm looking for a hillshade for the state of Colorado...Prefer less than 10 meters. Prefer they come from either image server or arcgisonline.com that I can download to my computer. Prefer it be ...
0
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0answers
27 views

How do I create illuminated choropleth maps without converting symbology to representation? [duplicate]

I'm just wondering if anyone knows how to create illuminated choropleth maps ( I have rates and ratios at the community district level) without converting symbology to representation ( I have an ...
0
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0answers
34 views

Add hillshade to naip imagery

I've been searching for quite a while now. Is there a way to merge a hillshade image with an aerial image with gdal? I'm just trying to create a hillshaded aerial image.
5
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1answer
167 views

Weird raster visualisation

Using the hillshade tool (Arcmap 10) on a 30m SRTM raster downloaded from NED the result is the one in the picture. Why are there those crossed lines all over the raster? How could I remove them? ...
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0answers
44 views

Applying color ramp/map to mosaic using ArcGIS for Desktop?

My goal is to create a bold, colorful hillshade following this tutorial from the ESRI website. Everything works great until I try to apply a color ramp or colormap. It somehow crunches the values and ...
1
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1answer
142 views

Combining four shaded relief images into one single image using GIS overlay technique? [closed]

I have prepared four shaded relief images (hillshade) with four contrasting illumination directions 0°, 45°, 90° and 135°. I would like to combine four shaded relief images to produce one shaded ...
0
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0answers
63 views

Calclulate the shade from a DSM and from sun elevation and azimuth angle

I have a mosaic of about 5000 tiles of aerial orthophotgraphy taken at different dates and thus with different sun angles. Furthermore, I have a Digital Surface Model (1 m resolution). My goal is to ...
0
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1answer
48 views

How to install mdenoise on linux?

It is suggested to install mdenoise via : wget http://www.cs.cf.ac.uk/meshfiltering/index_files/Doc/mdsource.zip unzip mdsource.zip cd mdenoise g++ -o mdenoise mdenoise.cpp triangle.c ln -s ...
21
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2answers
2k views

Can I reproduce this classic cartographic hillshade relief effect (hachures) electronically using modern DEM data?

I own a number of old cetral-European maps and I always liked the classic hand-drawn cartographic hillshade relief presentation that these maps feature. I am not wanting to reproduce the shading ...
2
votes
1answer
400 views

How to remove strange gdaldem hillshade artifacts?

I've downloaded 9 chunks of 1 arc-second NED in IMG format from the National Map. I'm trying to create a hillshade from them. I'm using: GDAL 1.10.0, released 2013/04/24 First, I combine them and ...
10
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3answers
402 views

How to create composite hillshade?

The concept of composite hillshade is to combine multiple hillshades with different sunlight orientation to avoid blind spot. It requires to merge 3 hillshades images with 315⁰ (NW sunlight, default ...
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1answer
97 views

Hillshade with too big pixels

I digitized some maps with isolines every 4m. I created a DEM and the Hillshade. But the hillshade has big pixels. I use ArcGIS 10.3. Is there something to be look out for that I might have done ...
2
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1answer
54 views

How to average gdal_hillshades?

For some unknow reason, my average of 3 hillshades is very dark : gdaldem hillshade input.tif hillshades_C.tmp.tif -s 111120 -z 5 -az 315 -alt 60 -compute_edges gdaldem hillshade input.tif ...
0
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1answer
45 views

How to pass value of a band to and other band and change its value?

Using gdaldem hillshade, I get a one-band hillshade (download here, 2MB) : gdaldem hillshade crop_xl.tmp.tif Shadedrelief.tmp.tif -s 111120 -z 5 -az 315 -alt 60 -compute_edges I currently can ...
3
votes
1answer
161 views

ArcGIS hillshade create contour artifact

I created a DEM in ArcMap (10.3) using Topo to Raster. Then, when I tried to create a hillshade using spatial analyst, result look like the picture below. Any idea on what causing the contour-like ...
2
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1answer
75 views

What exactly does hill shade or Shaded relief , if performed on SRTM DEM will output?

Two questions actually. Does shaded relief or hill shade outputs mean "expelling of shadows"? For a vast country like India, how to prepare a map from SRTM DEM, which does not have any shadow ...
2
votes
1answer
78 views

Unable to Produce Hillshade

I have been trying to create a hillshade using DEM data, however, regardless of the scale and z values I use the output is all black. I accessed the DEM data from a government source and clipped it ...
0
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1answer
38 views

gdaldem hillshade stop working with new projection?

Parallel to gdalwarp `-te -5.8 41 10 51.5 -ts 1980 0` not working with mercator? , my hillshade works with lat/long input : gdaldem hillshade input.tmp.tif shadedrelief.tmp.tif -s 111120 -z 5 -az ...
1
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1answer
152 views

Displaying DEM with real elevation values in ArcGIS Desktop?

I am trying to create a DEM with hillshading map in ArcGIS Desktop 10, but I'm getting the result with scale values between 0 and 254. How can I display the scale with the real elevation values? ...
0
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0answers
123 views

Errors trying to use MDOW Hillshade Model (ArcMap 9.3) in ArcMap 10.2

I am attempting to use Hillshade Tools to generate hillshade from a DEM. I am using ArcMap 10.2.1, and it looks like the tool is made for 9.3. Anyway, I get this error 000875: "Output raster's ...
2
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0answers
151 views

QGIS procedure for Multidirectional, oblique-weighted, shaded-relief?

Is QGIS capable of the multidirectional, oblique-weighted,shaded-relief method described at http://pubs.usgs.gov/of/1992/of92-422/of92-422.pdf ? If so, what are the steps necessary in QGIS to ...
0
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1answer
92 views

Hillshade values for winter and summer

I'm working with summer and winter hillshade values that were calculated in ArcGIS9.3 (but I'm now viewing them/working with them in ArcGIS10.2). Hillshade values were calculated using the hillshade ...
5
votes
1answer
315 views

Identify shadow on Landsat image by Hillshade Tool (spatial analysis) in ArcGIS?

I would like to automaticaly identify shadows on Landsat scene in mountaineus area using Hillshade Tool (ArcGIS 10.1). I have 1 Landsat image from one date DEM (SRTM) from the same area To create ...
1
vote
1answer
108 views

How to add hillshades to a raster map?

I have a raster map without hillshades and want to add Hillshades derived from the SRTM90 dataset. I am looking for a tool, that can handle that as automatic as possible? I don't want to bother with ...
14
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5answers
4k views

Is Hillshade option in ArcMap rubbish or is it me?

Here is a pretty pic of the raster I am using - with no effects applied - just the color ramp and historgram adjusted to show out all the relief - all be it in a very 2D way! I have a raster layer ...
1
vote
1answer
226 views

A nice display of hillshade and my geologic map

i want to create a nice hillshade map covered by a grid or RGB map, with similar colour results in ArcMap like this: Is there a way to achieve this in ArcGis without transparency settings which ...
3
votes
1answer
114 views

Grid-like artifact visible in contour layers?

I am creating contours from an Aster DEM in ArcMap 10.1 I see a grid pattern appearing, particularly in areas of dense contours: I see the same artifact if I create a Hillshade layer so presumably ...
0
votes
1answer
120 views

going from hillshade to percent shaded (gdaldem)

I assumed hillshades output percent shaded (scaled to 255) at the given azimuth and altitude but this is incorrect. A flat raster at 80 degrees altitude has a maximum value of 251 instead of 255. How ...
2
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0answers
157 views

Improve gdaldem hillshade output (lighten up flat parts)

I have a hill-shading that I made using gdaldem hillshade which is already pretty good. I used the option -alt 60 to get nice contrast, but the problem is, that with lowering the light-source, also ...
10
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3answers
2k views

How to create a Hillshade model with multicolor “alà Imhof”?

I would like to make a Hillshade-Model with multicolor "alà Imhof". That means, I dont want a "usual" gray hillshade, I would like to use grey-blue and grey-violett from different sun directions. ...
8
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3answers
1k views

High Mountain hillshade is not “natural”

after generalizing my DHM and extraction of different color-hillshades, I got something like this: Its not very good, but I used the idea of Imhof generalizing and coloring the hillshade ...
3
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2answers
615 views

cloud shadow detection

I am trying to detect cloud shadows in Landsat images. I came up with producing good shadows and cloud masks. Now I'd like to implement my cloud mask adding cloud shadows. Do You have a good idea to ...
2
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4answers
1k views

What could cause garbage hillshade output

I've used Hillshade successfully in the past, but for this DEM I keep getting a weird output. It's a 30-meter TIFF downloaded from the National Elevation Dataset. And this is what the output looks ...
0
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1answer
58 views

Interaction with two variables as parameters, saving the raster properties output into a table (.dbf)

The draft of the model below TASK: I need to calculate the percentage of river channel that is covered with shadow in each timestep RESOURCS: I have values for azimuth and elevation of the sun ...
0
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1answer
285 views

Hillshade is block grey ArcGIS

So I am trying to create a hillshade on my DEM because I need to be able to distinguish features which I can't do in its current state (see picture). However, when I add the hillshade, it adds a block ...