View source: R/geometryVariables.R
geometryVariables | R Documentation |
This function calculates geoemtry parameters from Raster data.
geometryVariables(x)
x |
A RasterLayer with any values but where patches are seperated by surrounding NA values |
A RasterStacks containing the geoemtry parameters. The names are as following; Patches: The ID of the Patches Ar: The area of the individual patches SI: The shape index calculated by SDMTools CA: The core area calculated by SDMTools Up: The perimeter of the indivisual patches CAI: The core area index calculated by SDMTools PAR:The perimeter area ratio calculated by SDMTools Re: The radius of the inner circle distEdges: The distcance from edges Ru: The radius of the outer circle OIC: The inner-outer-circle ratio CI1: inner compactness CO1: outer compactness CI2: inner compactness2 CO2: outer compactness2 CCI1: corrected compactness index 1 CCI2: corrected compactness index 2 CO: compactness SHD: Shoreline development C1: Circularity E: Elongateness TR:Thinness Ratio CR: Circularity ratio C2: Circularity2 FR: Form ratio EI: Elipticity index SF1: Shape factor GSI: Grain shape index SF2: Shape factor 2 C3: Circularity 3 SF3: Shape factor 3
For decription of the indices see list in Borg 1998: Vergleichende Analyse von Formindizes zur Charakterisierung von Landschaftsobjekten unter oekologischen Aspekten. Zeitschrift fuer Photogrammetrie und Fernerkundung 4: 108-119.
Hanna Meyer
SDMTools, clump
, borg_indices
## Not run:
RasterLayer <- raster(system.file("training.rst", package = "Rsenal"))
shape <- geometryVariables(RasterLayer)
plot(shape)
## End(Not run)
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