Emilie Nielsen at 01:51, 8 January 2026

2026-01-08T01:51:49Z

← Older revision		Revision as of 11:51, 8 January 2026
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tuflow>Par: Created page with "
==Method== Relief shading gives a DEM a more "3D" look. To use relief shading in SAGA, follow the steps outlined below:

Ensure that you have your DEM open in SAGA. ..."

2011-12-14T04:49:39Z

Created page with "<ol> ==Method== Relief shading gives a DEM a more "3D" look. To use relief shading in SAGA, follow the steps outlined below: <li>Ensure that you have your DEM open in SAGA. ..."

New page

<ol>
==Method==
Relief shading gives a DEM a more "3D" look. To use relief shading in SAGA, follow the steps outlined below: 

<li>Ensure that you have your DEM open in SAGA. Create a Map view of the DEM by double clicking on it in the '''Data'' tab. Without the relief shading the DEM looks like the image below.</li>
 
[[File:SAGA relief shading1.png | frame|none]]
 
<li>In the '''Modules''' tab of the workspace section, expand the '''"Terrain Analysis - Lighting, Visibility"''' option and select '''"Analytical Hillshading"'''.</li>
 
[[File:SAGA relief shading2.png | Frame|none]]
 
<li>In the options section, select the Grid System that the DEM belongs to (check this in the '''Data''' tab of the workspace). In the Elevation option select the DEM.<br<
The other options can be left at the defaults, but can be changed if desired.</li>
 
[[File:SAGA relief shading3.png | frame | none]]
 
<li>Select the '''Execute''' option.</li>
<li>After a few seconds (or minutes depending on the size of the grid), a tone should sound and the process is complete.</li>
<li>In the '''Data'' tab, a new grid should appear called '''Analytical Hillshading'''.</li>
 
[[File:SAGA relief shading4.png | frame |none]]
 
<li>Add this layer to the Map containing the DEM, this can be done by double clicking on the '''Analytical Hillshading''' dataset in the '''Data''' tab, and then selecting the map containing your DEM.</li>
 
[[File:SAGA relief shading5.png | frame |none]]
 
<li>In the Map window, the Hillshading grid should display on top of the DEM</li>
 
[[File:SAGA relief shading6.png | frame |none]]
 
<li>In order to see the original DEM, select the '''Analytical Hillshading''' Grid in the '''Data''' tab, and then set a transparency in the '''Settings''' tab. Hit apply.</li>
 
[[File:SAGA relief shading7.png | frame |none]]
 
The DEM should now appear as a relief shaded DEM. 
 
[[File:SAGA relief shading8.png | frame |none]]
 

<li>The "Analytical Hillshading" grid can be saved as a separate layer for future use. To do this, select the Analytical Hillshading grid in the data tab, right-click on this grid and select '''Save-As'''. Give the grid a sensible name, for example the original DEM name and "_relief", in the example above the relief shading grid for "DEM_M01" was saved as "DEM_M01_relief".</li>

</ol>

SAGA Relief Shading - Revision history

Emilie Nielsen at 01:51, 8 January 2026

tuflow>Par: Created page with " ==Method== Relief shading gives a DEM a more "3D" look. To use relief shading in SAGA, follow the steps outlined below: Ensure that you have your DEM open in SAGA. ..."

tuflow>Par: Created page with "
==Method== Relief shading gives a DEM a more "3D" look. To use relief shading in SAGA, follow the steps outlined below:

Ensure that you have your DEM open in SAGA. ..."