Problem with Capital letter in my class name in R

user_14382050 0
Viewed 56

I'm a student in biology. I have a problem with the class in R. I have created this class: (this class is just a test, it do nothing)

Chromosome <- setRefClass('Chromosome',
                    fields = list(genes='list',genes_range='list',fitness='numeric'),
                    methods = list(get_fitness=function(object){
                      fitness <<- 2
                    },
                    mutate=function(object){
                      print('mutate')
                    })
                    )

a <- Chromosome(genes=list('just','a random value'),genes_range=list('lplpk',15),fitness=1)

and when i try to run this code I have this error:

Error in initialize(value, ...) : 
  invalid names for slots of class “Chromosome”: genes, genes_range, fitness

But if i replace the Chromosome by chromosome there is no problem. Do you have any idea on why there is this problem? Now the code works, but I still don't know why I can't use a 'C' for chromosome.

r class oop
1 Answers

It looks like you are not creating the object correctly. See here:

http://adv-r.had.co.nz/R5.html

You're missing the $new part:


a <- Chromosome$new(genes=list('just','a random value'),genes_range=list('lplpk',15),fitness=1)
user_21659930
Related