CODEWITHSUNDEEP
r
iliya
iliya

Reputation: 531

could not find function "summary.rbga"

when im trying to execute the the following command:

cat(summary.rbga(GAmodel))

the output is:

Error in cat(summary.rbga(GAmodel)):

could not find function "summary.rbga"

im sure that i import the package by the command "library(genalg)" and it works perfectly for other functions. im using Version 0.98.1102 on windows.

Upvotes: 0

Views: 2814

Answers (1)

MrFlick
MrFlick

Reputation: 206197

The function summary.rbga is in genalg but it's not exported from the package explicitly. It's the special implementation of the summary function for rbga objects. In the example from the help page, you can see how it works

evaluate <- function(string=c()) {
    returnVal = 1 / sum(string);
    returnVal
}

rbga.results = rbga.bin(size=10, mutationChance=0.01, zeroToOneRatio=0.5,
    evalFunc=evaluate)

class(rbga.results)
# [1] "rbga"

summary(rbga.results, echo=TRUE)
# GA Settings
#   Type                  = binary chromosome
#   Population size       = 200
#   Number of Generations = 100
#   Elitism               = 40
#   Mutation Chance       = 0.01
# 
# Search Domain
#   Var 1 = [,]
#   Var 0 = [,]
# 
# GA Results
#   Best Solution : 1 1 1 1 1 1 1 1 1 1

Note that you call summary rather than summary.rbga directly. As long as you pass in an object that has class "rbga" it will work.

You can access the function directly with genalg:::summary.rbga

Upvotes: 8

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