SAFD (version 0.02)

Msum: Minkowski sum

Description

Given a list XX of polygonal fuzzy numbers the function first checks (1) if each element of the list is in the correct form (tested by checking) and (2) if the alpha-levels of all elements in the list coincide. If these two conditions are fulfilled the levelwise Minkowski-sum of all elements in the sample XX will be returned. If not, NA will be returned - in this case the translator function can be used to transform the elements of the list in the correct format.

Usage

Msum(XX)

Arguments

XX

...list of polygonal fuzzy numbers (the function implicitly checks the conditions)

Value

• Given input XX in the correct format the function returns the Minkowski sum of the polygonal fuzzy numbers contained in the list.

Details

See examples

See Also

See Also checking, Mmean, translator

Examples

#
data(XX)
X<-translator(XX[[1]],50)
Y<-translator(XX[[2]],50)
Z<-translator(XX[[3]],50)
YY<-list(X,Y,Z)
Msum(YY)

#
X<-data.frame(cbind(x=c(-2,-0.75,-0.25,0.5,1),alpha=c(0.3,0,1,0,0.3)))
Y<-data.frame(cbind(x=c(-2,-0.75,-0.25,0.5,1),alpha=c(0,0.3,1,0,0.3)))
Z<-data.frame(cbind(x=c(-2,-0.75,-0.25,0.5,1),alpha=c(0,0.6,1,1,0)))
ZZ<-list(X,Y,Z)
Msum(ZZ)