Module: DaruLite::DataFrame::SetMultiIndexStrategy
- Defined in:
- lib/daru_lite/dataframe.rb
Class Method Summary collapse
Class Method Details
.delete_vector(df, cols) ⇒ Object
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# File 'lib/daru_lite/dataframe.rb', line 1539 def self.delete_vector(df, cols) df.delete_vectors(*cols) end |
.new_index(df, cols) ⇒ Object
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# File 'lib/daru_lite/dataframe.rb', line 1533 def self.new_index(df, cols) DaruLite::MultiIndex.from_arrays(df[*cols].map_vectors(&:to_a)).tap do |mi| mi.name = cols end end |
.uniq_size(df, cols) ⇒ Object
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# File 'lib/daru_lite/dataframe.rb', line 1529 def self.uniq_size(df, cols) df[*cols].uniq.size end |