R Object Oriented Programming RC pipe operator not working












0















I've got the following classes, methods and functions:



library(data.table)
#df <- fread(file.choose())


subject <- setRefClass("subject",
fields = list(id = "integer", Name = "character"),
methods = list()
)


visit <- setRefClass("visit",
fields = list(visit_no = "integer", Address = 'character'),
methods = list())



room <- setRefClass("room",
fields = list(room = "character", size = 'numeric'),
methods = list()
)



LongitudinalData <- setRefClass("longitudinalData",
contains = c('subject','visit','room'),
fields = list(
value = "numeric",
timepoint = "integer"),
methods = list(
subject <- function(x, p){return(x$value[which(x$id==p)])},
visit <- function(x, p){return(x$value[which(x$visit_no==p)])},
room <- function(x, p){return(x$value[which(x$room==p)])}
)
)

make_LD = function(df)
{
LongitudinalData$new(
id = df$id,
visit_no = df$visit,
room = df$room,
value = df$value,
timepoint = df$timepoint)
}


Then when I try to execute the following command:



out <- subject.LongtitudinalData(x, 44) %>% visit.LongtitudinalData(0) %>% room.LongtitudinalData("bedroom")


I get the following error:




Error: $ operator is invalid for atomic vectors




Data:



enter image description here










share|improve this question



























    0















    I've got the following classes, methods and functions:



    library(data.table)
    #df <- fread(file.choose())


    subject <- setRefClass("subject",
    fields = list(id = "integer", Name = "character"),
    methods = list()
    )


    visit <- setRefClass("visit",
    fields = list(visit_no = "integer", Address = 'character'),
    methods = list())



    room <- setRefClass("room",
    fields = list(room = "character", size = 'numeric'),
    methods = list()
    )



    LongitudinalData <- setRefClass("longitudinalData",
    contains = c('subject','visit','room'),
    fields = list(
    value = "numeric",
    timepoint = "integer"),
    methods = list(
    subject <- function(x, p){return(x$value[which(x$id==p)])},
    visit <- function(x, p){return(x$value[which(x$visit_no==p)])},
    room <- function(x, p){return(x$value[which(x$room==p)])}
    )
    )

    make_LD = function(df)
    {
    LongitudinalData$new(
    id = df$id,
    visit_no = df$visit,
    room = df$room,
    value = df$value,
    timepoint = df$timepoint)
    }


    Then when I try to execute the following command:



    out <- subject.LongtitudinalData(x, 44) %>% visit.LongtitudinalData(0) %>% room.LongtitudinalData("bedroom")


    I get the following error:




    Error: $ operator is invalid for atomic vectors




    Data:



    enter image description here










    share|improve this question

























      0












      0








      0








      I've got the following classes, methods and functions:



      library(data.table)
      #df <- fread(file.choose())


      subject <- setRefClass("subject",
      fields = list(id = "integer", Name = "character"),
      methods = list()
      )


      visit <- setRefClass("visit",
      fields = list(visit_no = "integer", Address = 'character'),
      methods = list())



      room <- setRefClass("room",
      fields = list(room = "character", size = 'numeric'),
      methods = list()
      )



      LongitudinalData <- setRefClass("longitudinalData",
      contains = c('subject','visit','room'),
      fields = list(
      value = "numeric",
      timepoint = "integer"),
      methods = list(
      subject <- function(x, p){return(x$value[which(x$id==p)])},
      visit <- function(x, p){return(x$value[which(x$visit_no==p)])},
      room <- function(x, p){return(x$value[which(x$room==p)])}
      )
      )

      make_LD = function(df)
      {
      LongitudinalData$new(
      id = df$id,
      visit_no = df$visit,
      room = df$room,
      value = df$value,
      timepoint = df$timepoint)
      }


      Then when I try to execute the following command:



      out <- subject.LongtitudinalData(x, 44) %>% visit.LongtitudinalData(0) %>% room.LongtitudinalData("bedroom")


      I get the following error:




      Error: $ operator is invalid for atomic vectors




      Data:



      enter image description here










      share|improve this question














      I've got the following classes, methods and functions:



      library(data.table)
      #df <- fread(file.choose())


      subject <- setRefClass("subject",
      fields = list(id = "integer", Name = "character"),
      methods = list()
      )


      visit <- setRefClass("visit",
      fields = list(visit_no = "integer", Address = 'character'),
      methods = list())



      room <- setRefClass("room",
      fields = list(room = "character", size = 'numeric'),
      methods = list()
      )



      LongitudinalData <- setRefClass("longitudinalData",
      contains = c('subject','visit','room'),
      fields = list(
      value = "numeric",
      timepoint = "integer"),
      methods = list(
      subject <- function(x, p){return(x$value[which(x$id==p)])},
      visit <- function(x, p){return(x$value[which(x$visit_no==p)])},
      room <- function(x, p){return(x$value[which(x$room==p)])}
      )
      )

      make_LD = function(df)
      {
      LongitudinalData$new(
      id = df$id,
      visit_no = df$visit,
      room = df$room,
      value = df$value,
      timepoint = df$timepoint)
      }


      Then when I try to execute the following command:



      out <- subject.LongtitudinalData(x, 44) %>% visit.LongtitudinalData(0) %>% room.LongtitudinalData("bedroom")


      I get the following error:




      Error: $ operator is invalid for atomic vectors




      Data:



      enter image description here







      r oop pipe reference-class






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 10:57









      Dario FedericiDario Federici

      250118




      250118
























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