Module: R::MDIndexedObject

Included in:
DataFrame, Matrix
Defined in:
lib/R_interface/rmd_indexed_object.rb

Overview

Module to be included for objects that have multi dimensional indices, such as array and dataframe

Instance Method Summary collapse

Instance Method Details

#[](*index) ⇒ Object

Index a DataFrame by using []



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# File 'lib/R_interface/rmd_indexed_object.rb', line 37

def [](*index)
  if (index.size > 1)
    # DataFrame single-cell only when both indices are scalar (one row, one column): use [[ so R returns scalar
    single_cell = index.size == 2 && self.is_a?(::R::DataFrame) &&
      index[0].is_a?(::Integer) && (index[1].is_a?(::Integer) || index[1].is_a?(::String))
    fn = single_cell ? R::Support.dbk_index : R::Support.md_index
    R::Support.exec_function(fn, @r_interop, *index)
  else
    super(*index)
  end
end