Class: Statistics::Bin

Inherits:
Object
  • Object
show all
Defined in:
lib/Statistics/Bin.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#count ⇒ Object (readonly)

class << self



53
54
55
 
# File 'lib/Statistics/Bin.rb', line 53

def count
  @count
end

#interval ⇒ Object (readonly)

class << self



53
54
55
 
# File 'lib/Statistics/Bin.rb', line 53

def interval
  @interval
end

Class Method Details

.bin_for_value(value, bins, bottom_boundary, bin_width) ⇒ Object 



32
33
34
35
 
# File 'lib/Statistics/Bin.rb', line 32

def bin_for_value(value, bins, bottom_boundary, bin_width)
  index = index_for_value(value, bins.count, bottom_boundary, bin_width)
  bins[index]
end

.boundaries(values, bin_width: nil, bin_count: nil, method: :square_root) ⇒ Object 



27
28
29
30
 
# File 'lib/Statistics/Bin.rb', line 27

def boundaries(values, bin_width: nil, bin_count: nil, method: :square_root)
  w = bin_width || width(values, bin_count: bin_count, method: method)
  values.first.step(to: values.last + w, by: w).to_a
end

.count(values, method: :square_root) ⇒ Object 



19
20
21
 
# File 'lib/Statistics/Bin.rb', line 19

def count(values, method: :square_root)
  send("#{method}_count", values)
end

.data_range(values) ⇒ Object 



23
24
25
 
# File 'lib/Statistics/Bin.rb', line 23

def data_range(values)
  values.last - values.first
end

.width(values, bin_width: nil, bin_count: nil, method: :square_root) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
 
# File 'lib/Statistics/Bin.rb', line 7

def width(values, bin_width: nil, bin_count: nil, method: :square_root)
  if bin_width
    bin_width
  elsif bin_count
    data_range(values) / bin_count.to_f
  elsif data_range(values) == 0
    1.0
  else
    send("#{method}_width", values)
  end
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


63
64
65
 
# File 'lib/Statistics/Bin.rb', line 63

def empty?
  @count == 0
end

#increment ⇒ Object 



55
56
57
 
# File 'lib/Statistics/Bin.rb', line 55

def increment
  @count += 1
end

#width ⇒ Object 



59
60
61
 
# File 'lib/Statistics/Bin.rb', line 59

def width
  @interval.end - @interval.begin
end