calculate_slope

<code>RasterLayer</code> (raster package). Digital Elevation Model

<code>numeric</code> value. Number of directions used in the Least Cost Path calculation. See Huber and Church (1985) for methodological considerations when choosing number of neighbours. Expected values are 4, 8, 16, 32, or 48. Default is 16

neighbours

<code>logical</code>. if TRUE, positive slope values (ie. up-hill movement) multiplied by 1.99 and negative slope values (ie. down-hill movement) multiplied by 2.31.

exaggeration

calculate slope (rise over run) from supplied digital elevation model (DEM)

Calculates cost surfaces based on slope to be used when modelling pathways and movement potential within a landscape (Lewis, 2021) <doi:10.1007/s10816-021-09522-w>.

Joseph Lewis

leastcostpath

Modelling Pathways and Movement Potential Within a Landscape

calculate_slope function

<dl><dt>dem</dt>
<dd><code>RasterLayer</code> (raster package). Digital Elevation Model</dd>
<dt>neighbours</dt>
<dd><code>numeric</code> value. Number of directions used in the Least Cost Path calculation. See Huber and Church (1985) for methodological considerations when choosing number of neighbours. Expected values are 4, 8, 16, 32, or 48. Default is 16</dd>
<dt>exaggeration</dt>
<dd><code>logical</code>. if TRUE, positive slope values (ie. up-hill movement) multiplied by 1.99 and negative slope values (ie. down-hill movement) multiplied by 2.31.</dd></dl>

Arguments

Author

calculate slope (rise over run) from supplied digital elevation model (DEM) — calculate_slope

<dl>

<dt>dem</dt>
<dd><code>RasterLayer</code> (raster package). Digital Elevation Model</dd>


<dt>neighbours</dt>
<dd><code>numeric</code> value. Number of directions used in the Least Cost Path calculation. See Huber and Church (1985) for methodological considerations when choosing number of neighbours. Expected values are 4, 8, 16, 32, or 48. Default is 16</dd>


<dt>exaggeration</dt>
<dd><code>logical</code>. if TRUE, positive slope values (ie. up-hill movement) multiplied by 1.99 and negative slope values (ie. down-hill movement) multiplied by 2.31.</dd>

</dl>

calculate_slope: calculate slope (rise over run) from supplied digital elevation model (DEM)

Description

Usage

Value

Arguments

Author