Module: AstroChart::Stats

Defined in:
lib/astro_chart/stats.rb

Overview

Element (四大元素) and modality (三大模式) distribution statistics.

Both classifications follow directly from the zodiac sign a body occupies. Starting from 牡羊座, elements repeat every 4 signs (火土風水) and modalities every 3 signs (基本固定變動):

牡羊=火基本  金牛=土固定  雙子=風變動  巨蟹=水基本
獅子=火固定  處女=土變動  天秤=風基本  天蠍=水固定
射手=火變動  摩羯=土基本  水瓶=風固定  雙魚=水變動

Constant Summary collapse

ELEMENTS = 
["火", "土", "風", "水"].freeze
MODALITIES = 
["基本", "固定", "變動"].freeze

Class Method Summary collapse

Class Method Details

.elements(positions) ⇒ Object

positions: { "太陽" => 123.45, ... } — the 10 classical planets (太陽..冥王星); the caller is responsible for passing only those.

Returns:

{ "elements"   => { "火" => n, "土" => n, "風" => n, "水" => n },
"modalities" => { "基本" => n, "固定" => n, "變動" => n } }


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# File 'lib/astro_chart/stats.rb', line 21

def self.elements(positions)
  element_counts = ELEMENTS.to_h { |e| [e, 0] }
  modality_counts = MODALITIES.to_h { |m| [m, 0] }

  positions.each_value do |degree|
    sign_index = (degree % 360).floor / 30
    element_counts[ELEMENTS[sign_index % 4]] += 1
    modality_counts[MODALITIES[sign_index % 3]] += 1
  end

  { "elements" => element_counts, "modalities" => modality_counts }
end