NAME

GT::PricesTools - Utility functions for manipulating GT::Prices

DESCRIPTION

This package provide some simple functions to merge data from an existing GT::Prices to a new GT::Prices object. It's especially usefull to convert daily data to a new time frame (ie: weekly/monthly).

Examples

  convert_prices_in_a_new_time_frame($prices, $WEEKLY);
  select_prices_by_period($prices, "2000-01-01", "2000-12-31");

  multiply_prices_by_number($prices, 3.45);
  divide_prices_by_number($prices, 2.5);

  reverse_prices($prices)

Ideas for later

  adjust prices by the last rate of a currency
  adjust prices by daily historical rate of a currency