Im stuck! I have developed a number of 'marketbased' indicators by calling an index into the formula - for example for a binary for showing when an index close is higher than its moving average: SP:=Security("C\\Metastock Data..............\\.SPX",C); SP>Mov(SP,15,E) creates a simple binary which can be used in explorations etc However, its seems impossible to do the same with indicators such as ATR(periods) that do not specify a price array. Hence, ATR used in an exploration simply returns the ATR of a particular stock but not of the index being called. Same for the trend indicator (ADX) that again does not specify a price array. Does anybody have a work around for this other than highlighting a plot and using the p variable (too slow)? Would you perhaps need to write the full version of the ATR indicator calling on the various price arrays?

I've found that Security("Symbol",indicator formula) sometimes gives unreliable results. I prefer to reference the security's raw data, and then construct the indicator from the ground up if possible: [code:1:6260f0c93a] =========== ATR formula =========== ---8<--------------------------- pds:=Input("ATR smoothing periods",1,2600,14); plot:=Input("ATR smoothing: [1]MetaStock, [2]EMA",1,2,1); { Data arrays } xClose:=Security("C\\Metastock Data\\...\\.SPX",C); xHi:=Security("C\\Metastock Data\\...\\.SPX",H); xLo:=Security("C\\Metastock Data\\...\\.SPX",L); xClose1:=ValueWhen(2,1,xClose); { True Range } TrueRange:=Max(xHi-xLo, Max(Abs(xClose1-xHi),Abs(xClose1-xLo))); { MetaStock ATR smoothing } ATRmetaStock:=Mov(TrueRange,pds*2-1,E); { EMA ATR smoothing } ATRema:=Mov(TrueRange,pds,E); { Plot in own window } If(plot=1,ATRmetaStock,ATRema) ---8<--------------------------- [/code:1:6260f0c93a] jose '-)