SurfaceArea

Calculates surface area on a per cell basis of a DTM based on Jenness, 2004.

Calculates multi-scale geomorphometric terrain attributes from regularly gridded digital terrain models using a variable focal windows size (Ilich et al. (2023) <doi:10.1111/tgis.13067>).

Alexander Ilich

MultiscaleDTM

Multi-Scale Geomorphometric Terrain Attributes

Vincent Lecours

Benjamin Misiuk

Steven Murawski

SurfaceArea function

<dl><dt>r</dt>
<dd>DTM as a SpatRaster or RasterLayer in a projected coordinate system where map units match elevation/depth units</dd>
<dt>na.rm</dt>
<dd>Logical indicating whether to remove NAs from calculations. When FALSE, the sum of the eight triangles is calculated. When TRUE, the mean of the created triangles is calculated and multiplied by 8 to scale it to the proper area.</dd>
<dt>filename</dt>
<dd>character Output filename.</dd>
<dt>overwrite</dt>
<dd>logical. If TRUE, filename is overwritten (default is FALSE).</dd>
<dt>wopt</dt>
<dd>list with named options for writing files as in writeRaster</dd></dl>

Arguments

Calculates surface area of a DTM — SurfaceArea

<dl>

<dt>r</dt>
<dd>DTM as a SpatRaster or RasterLayer in a projected coordinate system where map units match elevation/depth units</dd>


<dt>na.rm</dt>
<dd>Logical indicating whether to remove NAs from calculations. When FALSE, the sum of the eight triangles is calculated. When TRUE, the mean of the created triangles is calculated and multiplied by 8 to scale it to the proper area.</dd>


<dt>filename</dt>
<dd>character Output filename.</dd>


<dt>overwrite</dt>
<dd>logical. If TRUE, filename is overwritten (default is FALSE).</dd>


<dt>wopt</dt>
<dd>list with named options for writing files as in writeRaster</dd>

</dl>

SurfaceArea: Calculates surface area of a DTM

Description

Usage

Value

Arguments

References

Examples