rmcfs (version 1.1.1)

fix.data: Fixes input data values, column names and attributes types

Description

Fixes any input data to prepare them to export to ARFF/ADX formats. If after exporting data to ARFF/ADX formats there are some problems in running Java MCFS or WEKA, try to use this function before. This function fixes data values (e.g. space " " is replaced by "_") and data types (e.g. all Date columns converted to character in R).

Usage

fix.data(x, type = c("all", "names", "values", "types"),  source.chars = c(" ",",","/","|","#"),  destination.char = "_",  numeric.class = c("difftime"),  nominal.class = c("factor", "logical", "Date", "POSIXct", "POSIXt"))

Arguments

x

input data frame to be fixed.

type

• all - fixes: column names, data values, data types.
• names - fixes only column names. All characters determined by source.chars parameter are replaced by destination.char (e.g. space " " is replaced by "_").
• values - fixes only data values. All characters determined by source.chars parameter are replaced by destination.char (e.g. space " " is replaced by "_").
• types - fixes only data types (e.g. all possible nominal columns as (Date or logical) converted to character).

source.chars

characters that will be replaced in column names and data values.

destination.char

character that will be inserted in column names and data values.

numeric.class

vector of class labels to be casted as.numeric.

nominal.class

vector of class labels to be casted as.character.

Value

type parameter).

Examples

  # Load rmcfs library.
  library(rmcfs)
  
  # Load alizadeh dataset.
  data(alizadeh)

  # Fix data types and data values - remove "," " " "/" from values and fix data types
  # This function may help if mcfs has any problems with input data
  alizadeh.fixed <- fix.data(alizadeh)