search for: rate_a

Dear R helpers, I have two separate data frames. In one data frame the transaction data is stored and the other data frame has exchange rates stored say rate_A and rate_B where rate_A and rate_B are series of rates. rate_A and rate_B are properly defined and I am reading them through the appropriate dataframe. (Actually I have a different datasets and to try to keep things simple, I am defining it as above). I have BUY or SELL transaction (defined unde...