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 really helpful Mosaic to Raster DEM file that looks to be of high quality. When I run a hillshade on it however, it looks awful and doesn't really c. I know it's not an issue with this DEM, and definitely an issue with me as I have the same problem with Bathymetry data too. I've attached a couple of images of what I mean to hopefully better explain, but the gist of it is the hillshade looks awful when coloured, and nothing like it should. Similarly, this is the case for Bathymetry data, even when I alter the normal 345 angle to account for reversal. Wondering if anyone could help, would be massive boon to this project getting a few really high quality maps in there.      Above is an album to my issue. Maybe it's a colour problem? But no matter what I try, it looks ugly. Big props to the creator of the mosaic to raster - Paraskeva Charalambos, University of Edinburgh
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I am trying to generate a map with terrain and elevation in QGIS and as a beginner I have followed tutorials on how to generate contours and hill shades succesfully. However, I don't know what are the next steps in order for me to  apply style/colors on based on the elevation. As for my project I am using Global Elevation GeoTIFF from . I am not sure though if this is the right base map/file that I should use to produce what I want, or if this produces accurate elevation data. The map I need to achieve is a terrain + elevation map just like what  uses. Also, if I am able to do this, will there be a way to stitch or collage multiple layers from different sections of a map since processing the entire map takes forever, whilst for a certain country only takes a minute.
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I've made a mosaic dataset of some thermal imagery. There are three overlapping images, seen here:  As you can see, there is a discontinuity (jagged edge) between the two images on the right, and a slight offset in the southern fenceline. I want to tackle this using the  function in ArcMap 10 to &quot;average out&quot; these small differences and create a seamless mosaic. The  tells me there should be a Blend Width option to control the area over which the rasters are blended... However, this is all I see:  How do I do this? I've looked in all the other tabs/online and can't find anywhere to define the blend with. I feel like I must be missing something obvious... I am using ArcMap 10.0 with an ArcInfo license on Windows 7.
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I am a relative beginner to using GIS, and am running QGIS 2.0.1 in Linux. I have two historical maps which I want to analyze, that show land use patterns in the same area at two different moments in time. I have them scanned and geo-referenced as layers in one file. Side by side, they look like this:     The main thing I am interested in is to compare the extent of the light and dark green areas between the two maps. Is this possible, and if so, what is the simplest approach? Is there a way to do this based on raster analysis? And if I have to make a shapefile, what is the best way to do that?  What I have already considered:   Drawing shapefiles as polygons by hand, as described in . That would be VERY tedious. Creating simplified, high contrast raster images by using color selection, filters etc. by trial and error in the Gimp and converting that to a shapefile. The results were very sloppy.
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Is there a way one could improve the rendering of this gradient? After creating a gradient swatch and applying it to a rectangle that fills the entire page to use as a background, the gradient looks bad so I would like to improve the quality of it and High Quality display performance doesn't change anything:
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I'd like to use the DEM SRTM 1-arc second (Version 4, 30m) from USGS for Europe. Unfortunately there are some voids. My idea is to fill those voids using the void-filled version 3 (90m) by resampling it to 30m and inserting the missing data in the version 4 DEM.  As I'm new to QGIS I don't know the proper steps. I already got a 30m map by reprojecting the dimensions times three but I'm not sure if that's the right thing to do and I have no idea how to fill the voids afterwards.
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. I tried to imitate the LOD effect in unity using crossfade LOD but . I've done some research into the subject but can't seem to find anything about blending foliage in this way so I'm looking for advice. Thanks so much!
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After looking through all the stuff that was released or talked about at the Esri UC 2013  I am still genuinely confused by what  is. I will admit that it looks pretty cool, and has , but I just do not know how it is different from ArcMap or ArcGIS Online.  Does anybody have any clearer answers beyond the flashy video and homepage?
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I have a DEM built from LiDAR data and the file extension is .tif. When I open this file in ArcMap it seems to be a shaded relief DEM (see the screenshot below).  It happens I want to visualize the DEM colored by elevation. How should I proceed?
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I followed a microdisplacements tutorial on Blender Guru and I was able to create a texture fine. Here is a picture.  And then I turned on Adaptive subdivision. Here is a picture of what happened.  I know that this question has been asked before but I am using blender 2.79 so it should be fixed, right? Please let me know you ideas. Thanks
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I have been attempting to use the Spatial Analyst Curvature tool with mixed results.  I originally tried to use it with a raster that was projected using a 1983 Teale Albers projection and the results were black, indicating the lowest values.  I then transformed the raster into UTM projection and ended up with grid-like lines on the raster which have values that are obviously not accurate.  Does anyone know why these lines have appeared or what I'm doing wrong.  Thanks.
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I would like to obtain a realistic rendering with edges not too sharp and smooth surface. I tried adding a crease of 1, but edges are too sharp. Marking edges sharp is too soft. It seems there are some artifacts in the rounded corners...what can I do?
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I am having trouble exporting my map that has the same quality in the inset.  The lines come out blurry.    You can see a big difference between the quality.  Any ideas?
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I'm trying to complete a Multi-Criteria Evaluation for an MSc assessment and am in the process of standardising my factor maps.  Unfortunately, my DEM layer (ASCII file) keeps changing from this:    To this:    The syntax used in Raster Calculator is: (“DEM” – 0) / (544 – 0) where DEM is the layer, 0 is the minimum values and 544 is the max value.  Has anyone come across this before? Does anyone know how to standardise it so the surface variation is still present?  I've done the same for Topographic Wetness Index but that's done ok (both layers are visualised the same)
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In a raster layer's Style Properties, I can choose pseudocolor render type, and choose a color ramp and classify the raster.      However, when I click the 'Apply' button, or click 'OK', the visualization of the raster never changes.  I was able to output a 'colorized' version of the same raster using GRASS plugin.  I also reinstalled QGIS 2.8, and was able to adjust and see a raster stylings using the steps I outlined above.  So, can anyone confirm this as an issue, or confirm that there's a mistake somewhere in my process?  I should note that I'm on a Mac, 10.10.4, and I'm using the QGIS provided by , 2.10.1-1 .  Update 1: Here's a screenshot of the rest of my settings.      I have Grayscale set to off in the Style setting.  Also, I don't believe grayscale/color-blind Preview is available on the Mac version of QGIS.  They're does't appear to be the option where it , in the Menu Bar under View / Preview / Photocopy (grayscale) etc.  Either way-- I added a shapefile to show color.  Update 2: I've experimented with setting color interpolation to discrete, linear, and exact, but still am not able stylize using Singleband pseudocolor.  I've also confirmed that the 'Render' box on the the main map view is checked.  Also, I am able to adjust Color Rendering settings, like Hue, Blending Mode, etc., and see the results when clicking 'Apply' or 'OK'.  Update 3: As other Mac users are confirming this, I think it may be a bug. I've created a bug report at the official .
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I have a DEM layer from ASTER satellite and I want to get the slope information from it.  I use terrain analysis > slope, but the output is so wrong. Why is that?  Here is the DEM:     And here is the "Slope" that is totally wrong. It should stretch the values from 0 - 89.9097 but it does not.
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I have a terrain with two materials going into a Mix Shader, I want the fac input to be the slope of the terrain. Steep parts should be one color, flat part another.
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I am looking to perform a simple (one observer location) viewshed analysis on a standard DEM using GDAL (either python or .NET bindings).  I have searched, but haven't found any readily available implementation.  Can anyone point me in the right direction?