You have a problem with the way IIF() is used.
See "Common Coding Mistakes" in the Users Guide.
From your description, I assume that you want to go
through your symbols, characterize the last value of the divergence and
associate the divergence with a symbol. If so, a simple way is
to replace the code after the Plot() section with the following which will
put 1 or 0 in the divergence columns.
addtextcolumn(name(), "symbol", 1.2,
colorblack);
addcolumn(posdiv, "posdiv", 1.2,
colorlime);
addcolumn(negdiv, "negdiv", 1.2,
colorred);
filter =
status("lastbarinrange");
Bill
----- Original Message -----
Sent: September 22, 2009 10:55 AM
Subject: [amibroker] Code Question
I found this code in the TASC articles in the member section. I
was trying to add some code to be able to run an explore to possible
divergences. When I plot the indicator it seems to be correct but in the
columns both conditions show true. It is a simple code mistake but at the
moment it escapes me why. Can anyone point out the obvious to
me?
Thanks
DM
/*TWO-POINT PROBLEM OF THE RATE OF
CHANGE
In the "Two-point problem of the Rate Of Change" article Martti
Luoma AND Jussi Nikkinen
present the modification of classic ROC indicator
that can be constructed two ways in AmiBroker.
First way does NOT require
writing any single line of code. You can construct ROCadj AND other
indicators using AmiBroker's powerful drag AND drop technology. To create
ROCadj, select Chart tab,
go to Indicators folder, double click on ROC -
Rate Of Change - this will create new chart pane with ROC.
Then go to
Averages folder, click AND drag EMA - Exponential Moving Average onto ROC
chart.
Your indicator is ready. Now simply adjust ROC period to 1 AND EMA
smoothing period to 21 using
Parameters window. Second way is to use the
formula presented in Listing 1. Just type it into
Formula Editor AND press
Insert Chart button.
*/
periods = Param("Periods", 21, 2, 200, 1
);
ROCadj = periods * EMA( ROC( C, 1 ), periods );
/*Added
Divergence to original
formula*/
RocSlope=LinRegSlope(ROC(C,periods),periods);
MARocSlope=LinRegSlope(ROCadj,periods);
PosDiv=MARocSlope>=RocSlope;
NegDiv=MARocSlope<RocSlope;
//Plots
Plot(
ROCadj, "ROCadj "+periods, colorRed, styleThick );
// the line below adds
standard ROC overlay
Plot( ROC( C, periods ), "ROC "+periods, colorBlue
);
Plot(PosDiv,"Positive",colorLime,styleOwnScale);
Plot(NegDiv,"Positive",colorRed,styleOwnScale);
IIf(PosDiv>0,AddTextColumn("Positive","Positive
Divergence",1.2,colorLime),0);
IIf(NegDiv>0,AddTextColumn("Negative","Negative
Divergence",1.2,colorRed),0);
Filter=1;
------------------------------------
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This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
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For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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