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@@ -134,7 +134,7 @@ actually are. It also accounts for the changes of angles towards
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cardinal directions caused by the projection (see above).
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<p>
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-The output with the <b>-d</b> flag is azimuth degree (-90 – 90, where
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+The output with the <b>-d</b> flag is azimuth degree (-90 to 90, where
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0 is parallel with the focal cell). In case of negative horizon values
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obtained this indicates that the horizon height is below the cell it is
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computed from.
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Markus Neteler