code: function transform( numQuantiles ) {
  		/**
  		* FUNCTION: transform( data )
  		*	Defines the data transformation.
  		*
  		* @private
  		* @param {number} data - numeric stream data
  		* @returns {number} transformed data
  		*/
  		return function transform( data ) {
  			// Convert a comma delimited string into an array:
  			data = JSON.parse( '[' + data + ']' );
  
  			// Compute the quantiles:
  			return quantiles( data, numQuantiles );
  		};
  	}
docs: end FUNCTION quantiles() 
  FUNCTION: transform( numQuantiles )
  Returns a data transformation function.
  
  @private
  @param {number} numQuantiles - number of quantiles to calculate
  @returns {function} data transformation function