I have been observing options OI intraday and it doesn't seem to give any meaningful information. E.g. when Nifty went below 7400 yesterday 7400 CE OI increased, however, as Nifty crossed 7400 again, it decreased. So it seems options OI just follow prices and cannot be understood as support or resistance.
BTW can someone explain the criteria for generating the buy and sell signals.
If you do not understand the OI, Please follow what you understand. It is never proved whether Price follows Options or Options follows Price.
For Example the MAX OI has been at 7000-7500 for the past 20 days in the JUN-14 Series. So it indicates the support at 7000 and the Resistance at 7500. So when the RESISTANCE is at 7500, you have to expect NIFTY To Test 7500.
So it depends what you are watching.
You can watch MAX COI to play for Intraday. Now the MAX COI is at 7400-7550. Which indicates for today 7550 might act as the Resistance and 7400 will be support.
On Wednesday for example the MAX COI was at 7400-7400 indicating a breakout at 7400.
MAX does not mean the Greater positive value. MAX means where the MAX Addition or subtraction is happening. Today for example @ 7550 the value is Negative.