3 Consecutive Bar Closes (Help)

[rubedum]

I am new to ThinkorSwim and ThinkScript but have been using TradingView for a while now. I have noticed an unusual occurrence in many tickers, especially SPY. Whenever 3 consecutive bars close at the exact same price, that price tends to become a support or resistance, regardless of how long ago the 3 consecutive bars occurred. It seems that the 1-2 hr, 30, and 15 min timeframes work the best. If anyone can help me with what seems like a simple code I would really appreciate it.

Here are some of the lines created with dates and the timeframe as to when the level was formed.

 

[mashume]

Something like this:

declare upper;

def data = close;
def sr = if data == data[1] AND data[1] == data[2] then data else sr[1];

plot ThreeBarSR = sr;
ThreeBarSR.SetPaintingStrategy(PaintingStrategy.HORIZONTAL);

interesting observation

-mashume