Thanks for the new version, Sampey! I will try it over the weekend.
I have a strange issue with BTC/USDT trading pair on poloniex. C.A.T. tells me that I have negative gains (loss) but poloniex analyzer tells me that I have positive gains (profit). Could it be that you calculate the gains against BTC and poloniex calculates against USDT?
CryptKeeper, I wouldn't trust Poloniex to calculate gains / losses. The method Poloniex uses to calculate gains and losses presently gives incorrect calculations. I'm seeing modest gains in one market, but when I use the "Trade History & Analysis", and analyze a currency pair, I see a loss of 0.67 BTC. Poloniex's method would not pass in an accounting class ! Someone should really let them know and they should either fix it or remove the Trade Analysis altogether.