Class: ExoBasic::LikertValue

Inherits:
Object
  • Object
show all
Defined in:
lib/exobasic/likert_value.rb

Constant Summary collapse

UNKNOWN = 
0
MINIMUM = 
1

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(v, maximum) ⇒ LikertValue

Returns a new instance of LikertValue.



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# File 'lib/exobasic/likert_value.rb', line 8

def initialize(v, maximum)
  @v       = [LikertValue::UNKNOWN, [v, maximum].min].max
  @maximum = maximum
end

Instance Attribute Details

#maximum ⇒ Object (readonly)

Returns the value of attribute maximum.



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# File 'lib/exobasic/likert_value.rb', line 3

def maximum
  @maximum
end

#v ⇒ Object (readonly)

Returns the value of attribute v.



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# File 'lib/exobasic/likert_value.rb', line 3

def v
  @v
end

Class Method Details

.likert_avg(total_likert, n, maximum) ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 37

def self.likert_avg(total_likert, n, maximum)
  LikertValue.real_to_likert(1.0 * total_likert / (1.0 * n), maximum)
end

.real_to_likert(v, maximum) ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 33

def self.real_to_likert(v, maximum)
  LikertValue.new(v.round(), maximum).normalize_known
end

Instance Method Details

#get_extended_range ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 17

def get_extended_range
  LikertValue::UNKNOWN..@maximum
end

#get_range ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 13

def get_range
  LikertValue::MINIMUM..@maximum
end

#normalize ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 21

def normalize
  if @v != LikertValue::UNKNOWN
    [LikertValue::MINIMUM, [@v, @maximum].min].max
  else
    LikertValue::UNKNOWN
  end
end

#normalize_known ⇒ Object 



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# File 'lib/exobasic/likert_value.rb', line 29

def normalize_known
  [LikertValue::MINIMUM, [@v, @maximum].min].max
end