Hello,

i am using MetaStock v7.2 EoD and didn`t find following simple ROC Indicator in the Indicator List ...

I want to have a ROC Indicator from today to one year back as the same date - and not like in the indicator builder since 365 days !!!

Is this true that this SIMPLE ROC INDICATOR is not in the indicator list !?

I find some intresting ROC Indicators in this forum yet - thanks for it but i couldn`t find a simple ROC Indicator like this. Can anybody write me this ROC Indicator shortly. I am not able to create one *shame

best luck 4 your trades :
Rookie

Hi Rookie

Here's a variation of a formula I posted to a thread called "52-Week High". This formula marks backward anniversaries of the current date. If the last bar on a chart is November 13 2007 then it will mark November 14 2006, and so on. This is the "Start" variable, and the most recent of these marks the first bar of the current rolling year. To measure the rate of change from the last bar of the previous rolling year (as exact to one year ago as you can get) you should go back one bar from the most recent "Start" signal. That's taken care of by the "Periods" definition. Keep in mind that the only valid ROC value from this formula is its value on the last bar. On all other bars the fixed look-back period could be off by a bar or two.

There are a number of issues here that are not taken into account and which could affect results if this formula was used in an exploration. For example, the "Periods" parameter will return a valid value regardless of how much or how little data is loaded.

A "calendar days look-back" device for any number of days could be constructed easily enough using one of the available "day counters". I've used Wabbit's day counter in most of the weekly formulas (for EOD data) on my website. Hope this helps.

{One Year ROC}

{Mark Backward Anniversary}

{Date variables}

D:=DayOfMonth(); M:=Month(); Y:=Year();

LD:=LastValue(D); LM:=LastValue(M);

D1:=Ref(D,-1); M1:=Ref(M,-1); Y1:=Ref(Y,-1);

A:=(Y>Y1+1 OR (Y>Y1)*(M>M1 OR (M=M1)*(D>=D1)));

A:=ExtFml("Forum.Sum",A,1);

G:=M*31+D-372*(M>LM OR (M=LM AND D>LD))-372*A;

Start:=ExtFml("Forum.Sum",G<ValueWhen(2,1,G),1);

Start;

Periods:=LastValue(BarsSince(Start)+1);

ROC(C,periods,$);

Roy

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