Method: Statsample::DominanceAnalysis#initialize

Defined in:
lib/statsample/dominanceanalysis.rb

#initialize(input, dependent, opts = Hash.new) ⇒ DominanceAnalysis

Creates a new DominanceAnalysis object Parameters:

  • input: A Matrix or Dataset object

  • dependent: Name of dependent variable. Could be an array, if you want to

    do an Multivariate Regression Analysis. If nil, set to all
fields on input, except criteria



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# File 'lib/statsample/dominanceanalysis.rb', line 102

def initialize(input, dependent, opts=Hash.new)
  @build_from_dataset=false
  if dependent.is_a? Array
    @regression_class= MULTIVARIATE_REGRESSION_CLASS
    @method_association=:r2yx
  else
    @regression_class= UNIVARIATE_REGRESSION_CLASS
    @method_association=:r2
  end
  
  @name=nil
  opts.each{|k,v|
    self.send("#{k}=",v) if self.respond_to? k
  }
  @dependent=dependent
  @dependent=[@dependent] unless @dependent.is_a? Array

  if input.kind_of? Daru::DataFrame
    @predictors ||= input.vectors.to_a - @dependent
    @ds=input
    @matrix=Statsample::Bivariate.correlation_matrix(input)
    @cases=Statsample::Bivariate.min_n_valid(input)
  elsif input.is_a? ::Matrix
    @predictors ||= input.fields-@dependent
    @ds=nil
    @matrix=input
  else
    raise ArgumentError.new("You should use a Matrix or a Dataset")
  end

  @name=_("Dominance Analysis:  %s over %s") % [ @predictors.flatten.join(",") , @dependent.join(",")] if @name.nil?
  @models=nil
  @models_data=nil
  @general_averages=nil
end