Built in HHV and LLV functions allow to read highest high or lowest low of n-past bars. If we want to refer to future values, there is an easy way to do it using simple Ref function and just shift HHV or LLV reading from N-bars ahead. A ready to use function showing such approach is presented below:
// function definitions function futureHHV( array, periods ) { return Ref( HHV( array, periods ), periods ); } function futureLLV( array, periods ) { return Ref( LLV( array, periods ), periods ); } // sample use Plot( Close, "Close", colorDefault, styleBar ); Plot( HHV( H, 20 ), "HHV", colorGreen, styleDashed ); Plot( futureHHV( H, 20 ), "Future HHV", colorGreen, styleThick ); Plot( LLV( L, 20 ), "LLV", colorRed, styleDashed ); Plot( futureLLV( L, 20 ), "Future LLV", colorRed, styleThick );
And here is the chart produced by the formula above:
