Module: DaruLite::Vector::Convertible

Included in:
DaruLite::Vector
Defined in:
lib/daru_lite/vector/convertible.rb

Instance Method Summary collapse

Instance Method Details

#to_a ⇒ Object

Return an array



31
32
33
 
# File 'lib/daru_lite/vector/convertible.rb', line 31

def to_a
  @data.to_a
end

#to_df ⇒ DaruLite::DataFrame

Returns the vector as a single-vector dataframe.

Returns:



5
6
7
 
# File 'lib/daru_lite/vector/convertible.rb', line 5

def to_df
  DaruLite::DataFrame.new({ @name => @data }, name: @name, index: @index)
end

#to_h ⇒ Object

Convert to hash (explicit). Hash keys are indexes and values are the correspoding elements



26
27
28
 
# File 'lib/daru_lite/vector/convertible.rb', line 26

def to_h
  @index.to_h { |index| [index, self[index]] }
end

#to_html(threshold = 30) ⇒ Object

Convert to html for iruby



41
42
43
44
45
46
47
48
49
50
 
# File 'lib/daru_lite/vector/convertible.rb', line 41

def to_html(threshold = 30)
  table_thead = to_html_thead
  table_tbody = to_html_tbody(threshold)
  path = if index.is_a?(MultiIndex)
           File.expand_path('../iruby/templates/vector_mi.html.erb', __dir__)
         else
           File.expand_path('../iruby/templates/vector.html.erb', __dir__)
         end
  ERB.new(File.read(path).strip).result(binding)
end

#to_html_tbody(threshold = 30) ⇒ Object 



62
63
64
65
66
67
68
69
70
 
# File 'lib/daru_lite/vector/convertible.rb', line 62

def to_html_tbody(threshold = 30)
  table_tbody_path =
    if index.is_a?(MultiIndex)
      File.expand_path('../iruby/templates/vector_mi_tbody.html.erb', __dir__)
    else
      File.expand_path('../iruby/templates/vector_tbody.html.erb', __dir__)
    end
  ERB.new(File.read(table_tbody_path).strip).result(binding)
end

#to_html_thead ⇒ Object 



52
53
54
55
56
57
58
59
60
 
# File 'lib/daru_lite/vector/convertible.rb', line 52

def to_html_thead
  table_thead_path =
    if index.is_a?(MultiIndex)
      File.expand_path('../iruby/templates/vector_mi_thead.html.erb', __dir__)
    else
      File.expand_path('../iruby/templates/vector_thead.html.erb', __dir__)
    end
  ERB.new(File.read(table_thead_path).strip).result(binding)
end

#to_json ⇒ Object

Convert the hash from to_h to json



36
37
38
 
# File 'lib/daru_lite/vector/convertible.rb', line 36

def to_json(*)
  to_h.to_json
end

#to_matrix(axis = :horizontal) ⇒ Object

Convert Vector to a horizontal or vertical Ruby Matrix.

Arguments

  • axis - Specify whether you want a :horizontal or a :vertical matrix.



14
15
16
17
18
19
20
21
22
23
 
# File 'lib/daru_lite/vector/convertible.rb', line 14

def to_matrix(axis = :horizontal)
  case axis
  when :horizontal
    Matrix[to_a]
  when :vertical
    Matrix.columns([to_a])
  else
    raise ArgumentError, "axis should be either :horizontal or :vertical, not #{axis}"
  end
end

#to_s ⇒ Object 



72
73
74
 
# File 'lib/daru_lite/vector/convertible.rb', line 72

def to_s
  "#<#{self.class}#{": #{@name}" if @name}(#{size})#{':category' if category?}>"
end