borgIndices: Calculate shape indices listed in Borg 1998
In environmentalinformatics-marburg/Rainfall: Functions for training, predictiion and validation of an MSG based optical rainfall retrieval
Description
Usage
Arguments
Details
Value
Author(s)
References
Description
Calculate shape indices listed in Borg 1998
Usage
1
borgIndices(Ar, Ur, De, Du)
Arguments
Ar
area of the entities
Ur
Perimeter of the cloud entities
De
Diameter of the inner circle
Du
Diameter of the outer circle
Details
This function is mainly used as internal function of
geometryVariables
Value
A RasterStack
Author(s)
Hanna Meyer
References
Borg, E. & Fichtelmann, B. (1998):
Vergleichende Analyse von Formindizes zur Charaktersierung von
Landschaftsobjekten unter ökologischen Aspekten.
Zeitschrift für Photogrammetrie und Vermessung, 66, 108-112.
@examples
msg_example <- raster(system.file("extdata/msg",
"201007121650_mt09s_ct01dk009_m1hct_1000_rg01de_003000.rst",
package="Rainfall"))
# set non clouded areas to NA:
msg_example=reclassify(msg_example, cbind(-99,NA))
#calculate geometry Variables
geometry <- geometryVariables(msg_example,var=c("Ar","Ur","Re","Ru"))
borg<-borgIndices(geometry$Ar,geometry$Ur,geometry$Re*2, geometry$Ru*2)
plot(borg)
environmentalinformatics-marburg/Rainfall documentation built on May 16, 2019, 7:49 a.m.
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Description Usage Arguments Details Value Author(s) References
Description
Calculate shape indices listed in Borg 1998
Usage
1 | borgIndices(Ar, Ur, De, Du)
|
Arguments
Ar |
area of the entities |
Ur |
Perimeter of the cloud entities |
De |
Diameter of the inner circle |
Du |
Diameter of the outer circle |
Details
This function is mainly used as internal function of
geometryVariables
Value
A RasterStack
Author(s)
Hanna Meyer
References
Borg, E. & Fichtelmann, B. (1998): Vergleichende Analyse von Formindizes zur Charaktersierung von Landschaftsobjekten unter ökologischen Aspekten. Zeitschrift für Photogrammetrie und Vermessung, 66, 108-112. @examples msg_example <- raster(system.file("extdata/msg", "201007121650_mt09s_ct01dk009_m1hct_1000_rg01de_003000.rst", package="Rainfall")) # set non clouded areas to NA: msg_example=reclassify(msg_example, cbind(-99,NA)) #calculate geometry Variables geometry <- geometryVariables(msg_example,var=c("Ar","Ur","Re","Ru")) borg<-borgIndices(geometry$Ar,geometry$Ur,geometry$Re*2, geometry$Ru*2) plot(borg)
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Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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