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 MS Support #1 Posted : Thursday, April 11, 2024 7:59:18 PM(UTC) Rank: Advanced MemberGroups: Moderators, Registered, Registered Users, SubscribersJoined: 10/8/2010(UTC)Posts: 1,943Thanks: 86 timesWas thanked: 155 time(s) in 150 post(s) Alfred Francois’ article, “Trend Identification by Price and Time Filtering”, introduced his Price-Time Filtering indicator. Here are three formulas to add that indicator to MetaStock.  Price & Time Filter (Monthly on Daily):Code:``````{a monthly Price & Time Filter calculated on daily data} {expects to be plotted on a daily chart} new:= ROC(DayOfMonth(),1,\$)<1; mhi:= HighestSince(1, new, H); mlo:= LowestSince(1, new, L); up:= new AND C > Ref(mhi, -1); dn:= new AND C < Ref(mlo, -1); trend:= If( up, Max(1, PREV+1), If(dn, Min(-1, PREV-1),  If(new, If(PREV>0, PREV+1, PREV-1), PREV))); If(trend>0, trend, 0); If(trend<0, trend, 0)`````` Price & Time Filter (Weekly on Daily):Code:``````{a weekly Price & Time Filter calculated on daily data} {expects to be plotted on a daily chart} fri:= DayOfWeek() = 5; new:= ROC(DayOfWeek(),1,\$)<1; recalc:= fri OR (new AND Ref(fri=0, -1)); hi:= HighestSince(1, new, H); lo:= LowestSince(1, new, L); whi:= If(fri, hi, Ref(hi, -1)); wlo:= If(fri, lo, Ref(lo, -1)); up:= recalc AND C > Ref(whi, -1); dn:= recalc AND C < Ref(wlo, -1); trend:= If( up, Max(1, PREV+1), If(dn, Min(-1, PREV-1),  If(recalc, If(PREV>0, PREV+1, PREV-1), PREV))); If(trend>0, trend, 0); If(trend<0, trend, 0)`````` Price & Time Filter (native):Code:``````{calculates the Price & Time Filter on the data interval of the chart} up:= C > Ref(H, -1); dn:= C < Ref(L, -1); trend:= If( up, Max(1, PREV+1), If(dn, Min(-1, PREV-1), If(PREV>0, PREV+1, PREV-1))); If(trend>0, trend, 0); If(trend<0, trend, 0)``````
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