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SayaPolo View Drop Down
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Joined: 19 Nov 2018
Location: Sydney
Posts: 10 		Post Options Post Options   Quote SayaPolo Quote  Post ReplyReply Direct Link To This Post Topic: Supertrend
    Posted: 08 Jul 2019 at 12:54pm
Hi all,

Has anyone coded into BullChart the Supertrend indicator? I would like to use it as either as a Trend trading indicator or as a stop, similar to the Parabolic SAR. I found this in the internet but not sure how to code this into BullChart.

The supertrend indicator calculation goes as stated below-

 

Up = (high + low / 2 + multiplier  x  ATR

Down = (high + low) / 2 – multiplier x ATR

 

Calculation of Average True Range –

[(Prior ATR x 13) + Current TR] / 14

 

Here, 14 indicates a period. Hence, the ATR is derived by multiplying the previous ATR with 13. Add the latest TR and divide it by period.


Greatful for any assistance.

Cheers,

SayaPolo
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davidr View Drop Down
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Joined: 19 Oct 2004
Location: Australia
Posts: 13 		Post Options Post Options   Quote davidr Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 12:24pm
Hi SayaPolo,

There is a discussion of the supertrend indicator in a J B Volatility profit taker thread from sometime back, which can be found here:

http://www.bullcharts.com.au/forum/forum_posts.asp?TID=433&PN=4&title=j-b-volatility-profit-taker

and Maximo coded it up as an indicator for bullcharts like this:

>G'day Jeremy,
 
>I've updated the code, more accurate and simplified, no repaint. 
 
 

[Description="SuperTrend - Max"]

[target=price]

Mult:=Input("ATR Multiplier",3,1);

Nb:=Input("Nb Periods",8,1);

method:=inputma("Method",Wilders);

price:=Input("1=Median, 2=Close",1,1);

TruRan:=ma(ATR(1),Nb,method)*Mult;

HiLimit:=if(price=1,(H+L)/2-TruRan,C-TruRan);

LoLimit:=if(price=1,(H+L)/2+TruRan,C+TruRan);

LB:=If(HiLimit>=PREV and HiLimit<C,HiLimit,If(C<PREV,HiLimit-0.1,PREV));

UB:=If(LoLimit<PREV and LoLimit>C,LoLimit,If(C>PREV,LoLimit+0.1,PREV));

Trend:=if(UB>ref(UB,-1),1,if(LB<ref(LB,-1),-1,prev));

[drawundefined=gap]

[Color=lime green]

if(Trend=1 and hist(Trend,1)=-1,LB,if(Trend=-1,UB,undefined));

[Color=red]

if(Trend=-1 ,UB,if(hist(Trend,1)=1 ,LB,undefined));

[Color=lime green]

if(Trend=1 or Trend=0,LB,undefined);

{ Paint bars}

Flag:=input("PaintBars On=1, Off=0",0,0,1);

[linestyle=pricecolor; color=rgb(98,217,98)]

If(Trend=1 and Flag=1,1,if(Flag=0 and C>O,1,undefined));

[color=rgb(226,118,118)] {red}

If(Trend=-1 and Flag=1,1,if(Flag=0 and C<=O,1,undefined));


>Edited by maximo - 09 Feb 2011 at 2:04am

Regards
davidr
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maximo View Drop Down
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Joined: 02 Sep 2006
Location: Australia
Posts: 232 		Post Options Post Options   Quote maximo Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2019 at 7:08pm
This is a simplified version that may work better.

{ Stop Trail ATR }
[Target=price]
atrper :=Input("ATR period: ",14);
atrfact:=Input("ATR multiplier: ",2);
loss:=atrfact*ATR(atrper);
trail:=
If(C>PREV and Ref(C,-1)>PREV, Max(PREV,C-loss),
If(C<PREV and Ref(C,-1)<PREV, Min(PREV,C+loss),
If(C>PREV, C-loss, C+loss)));
Trail;
[linestyle=pricecolor]
[color=rgb(0,174,0)] if(C>=Trail,1,0);
[color=rgb(255,85,85)] if(C<Trail,1,0);


----------------------------------------------------------------

Also Wilder had a volatility stop which includes highs and lows.

{ Wilder Volatility Stop Trail }
[Target=price]
Mult:=Input("ATR Multiplier",2.2,1);
Nb:=if(Mult<3,7,Int(Mult*2+1));
Long :=Ref(HHV(C,Nb),-1) - (Ref(ATR(Nb),-1)*Mult);
Short:=Ref(LLV(C,Nb),-1) + (Ref(ATR(Nb),-1)*Mult);
trail:=
If(C>PREV and Ref(C,-1)>PREV, Max(PREV,Long),
If(C<PREV and Ref(C,-1)<PREV, Min(PREV,Short),
If(C>PREV, Long, Short)));
Trail;
[linestyle=pricecolor]
[color=rgb(0,174,0)] if(C>=Trail,1,0);
[color=rgb(255,85,85)] if(C<Trail,1,0);
 
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SayaPolo View Drop Down
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Joined: 19 Nov 2018
Location: Sydney
Posts: 10 		Post Options Post Options   Quote SayaPolo Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2019 at 8:33am
Hi Davidr and Maximo,

Thank you both so much for your replies.

Maximo, Thanks again for your coding. You are a true Guru and really appreciate your time and effort in assisting the community of traders.

Cheers,
SayaPolo
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