Set2expr: Conversion of a vector into a string

In kStatistics: Unbiased Estimators for Cumulant Products and Faa Di Bruno's Formula

Conversion of a vector into a string

Description

The function converts a set into a string.

Usage

Set2expr(v = NULL )

Arguments

v

Set

Value

string

the string

Note

Called by the MFB and MFB functions in the kStatistics package being useful for manipulating the result before its print.

Author(s)

Elvira Di Nardo [e-mail],
Giuseppe Guarino [e-mail]

Examples

 
# To print 6f[3]^2g[2]^5 run 
Set2expr( list(c("1","2","f","3","2"),c("1","3","g","2","5"))) 

# Run MFB(c(3),1) to recover f[3]g[1]^3 + 3f[2]g[1]g[2] + f[1]g[3]
# Run S<-MFB2Set(MFB(c(3),1)) to convert the output of MFB(c(3),1) into a vector.  
# The result is
# "1" "1" "f" "3" "1"
# "1" "1" "g" "1" "3"
# "2" "3" "f" "2" "1"
# "2" "1" "g" "1" "1"
# "2" "1" "g" "2" "1"
# "3" "1" "f" "1" "1"
# "3" "1" "g" "3" "1"
# To set f[2]=1, run S[[3]][4]<-"" and S[[3]][3]<-"".
# Then run Set2expr(S) to recover  
# f[3]g[1]^3 + 3g[1]g[2] + f[1]g[3]
#
S<-MFB2Set(MFB(c(3),1))
S[[3]][4]<-""
S[[3]][3]<-""
Set2expr(S)

kStatistics documentation built on June 8, 2022, 5:05 p.m.