Can’t Get Bullcharts to Plot indicator

   I've had problems before trying to get Bullcharts to plot an indicator of another indicator. I think it may be related to the use of the PREV statement. I've tried to recreate a Heikin-ashi zero lagging TEMA consistent with the May edition of the Technical Analysis of Stocks & Commodities. Recreating the coding is straight forward. I can get the Heikin-ashi indicator (just a smoothed version of close) to plot but I cannot get moving average of the Heikin-ashi indicator to plot. The coding is below. I suspect this is a Bullscript bug but I am not sure. Can anyone spot the problem? 

[citation="Technical Analysis of STOCKS & COMMODITIES, May 2008, p.22"]

[target=Price; category=Moving Average; alias=zlaHaC;]

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

n := input("Time periods",14,1);

x:= (ref((O+H+L+C)/4,-1)+prev)/2;

expr:= ((O+H+L+C)/4+x+Max(H,x)+Min(L,x))/4;

ma1 := ma(expr,n,method);

ma2 := ma(ma1,n,method);

difference := ma1-ma2;
zla := ma1+difference;
[name=HaC; color=blue]

expr;
[name=Average; color=blue]

zla;
{ Markers }
[name=Above; linestyle=marker; marker=type1; tooltip="Value passed above moving average"]

cross(C,zla);

[name=Below; linestyle=marker; marker=type2; tooltip="Value passed below moving average"]

cross(zla,C);

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RODCAM Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Nov 2007 Location: Australia Posts: 14	Post Options Post Reply Quote RODCAM Report Post Quote Reply Topic: Can’t Get Bullcharts to Plot indicator Posted: 09 May 2008 at 10:16pm
	I've had problems before trying to get Bullcharts to plot an indicator of another indicator. I think it may be related to the use of the PREV statement. I've tried to recreate a Heikin-ashi zero lagging TEMA consistent with the May edition of the Technical Analysis of Stocks & Commodities. Recreating the coding is straight forward. I can get the Heikin-ashi indicator (just a smoothed version of close) to plot but I cannot get moving average of the Heikin-ashi indicator to plot. The coding is below. I suspect this is a Bullscript bug but I am not sure. Can anyone spot the problem? [citation="Technical Analysis of STOCKS & COMMODITIES, May 2008, p.22"] [target=Price; category=Moving Average; alias=zlaHaC;] method := inputma("Method",EXPONENTIAL); n := input("Time periods",14,1); x:= (ref((O+H+L+C)/4,-1)+prev)/2; expr:= ((O+H+L+C)/4+x+Max(H,x)+Min(L,x))/4; ma1 := ma(expr,n,method); ma2 := ma(ma1,n,method); difference := ma1-ma2; zla := ma1+difference; [name=HaC; color=blue] expr; [name=Average; color=blue] zla; { Markers } [name=Above; linestyle=marker; marker=type1; tooltip="Value passed above moving average"] cross(C,zla); [name=Below; linestyle=marker; marker=type2; tooltip="Value passed below moving average"] cross(zla,C);
	RODCAM - Brisbane

maximo Members Profile Send Private Message Find Members Posts Add to Buddy List BullCharts Guru Joined: 02 Sep 2006 Location: Australia Posts: 232	Post Options Post Reply Quote maximo Report Post Quote Reply Posted: 10 May 2008 at 2:31am
	Hi Rodcam, hows it going? I think the expr variable is a reserved word, so that might be it, though it worked fine on mine. You could change the occurrence's of expr to y or something. Also can try editing out these 4 instructions Temporarily to see the TEMA bullscript function works a little different to the calculation they give. You might have a preference for 1 or the other, cheers! {ma1 := ma(y,n,method); ma2 := ma(ma1,n,method); difference := ma1-ma2; zla := ma1+difference;} replace with zla:=tema(y,n); Edited by maximo

RODCAM Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Nov 2007 Location: Australia Posts: 14	Post Options Post Reply Quote RODCAM Report Post Quote Reply Posted: 11 May 2008 at 12:25pm
	Maximo, I am doing fine. Good to see you are keeping up with the posts. Before lodging the post I did a bit of tickering like you suggested but the problem persisted, so I decided to lodge in case I was missing something obvious. I've now coded it into my laptop version 3.4.1.28129 and it works fine. What version are you using? It may just be a problem with the Vista 3.6.7.21815 version I am using on my desktop machine. If you confirm you are using an earlier version I'll lodge the problem with the Bullcharts technical group. Cheers Rod
	RODCAM - Brisbane

maximo Members Profile Send Private Message Find Members Posts Add to Buddy List BullCharts Guru Joined: 02 Sep 2006 Location: Australia Posts: 232	Post Options Post Reply Quote maximo Report Post Quote Reply Posted: 11 May 2008 at 4:32pm
	I'm using version 3.4.1.28129 same as your laptop version, which works fine. Looks like its a Vista vers issue. Edited by maximo