How am i supposed to backtest nifty future data for past 2 years or so when chart shows feed for last 3 months only?
I believe most of traders would have already raised this issue.
It depends on requirement, now we have both futures and Index charts on daily timeframe for longer periods, if one really want minute data on futures for much longer duration alternatively one can derive it theoretically from Index( spot S) as F = S*e^rt, where F is future, r is interest rate, though this may not be a exact match to future price but can serve purpose of analyzing options.
Also we are working to provide intra time period data on futures for much longer periods though this will take some more time.