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Thanks a lot, Roy. The weird thing is, tonight I am NOT getting the error
message!! Intermittent is somehow worse than a chronic problem.
Nevertheless, I understood what you said about the possibility of division
providing a zero result, and since we are dealing with a stoch here, that is
a definite possibility. Thanks for the hint as to how to scan a data set - -
this isn't the first time I have seen this error message so when I see it
again I have a way to check the data. Thanks for the info. Nikku
----- Original Message -----
From: "Roy Larsen" <rlarsen@xxxxxxxxxxxxxx>
To: <Metastockusers@xxxxxxxxxxxxxxx>
Sent: Tuesday, November 25, 2003 10:47 PM
Subject: Re: [Metastockusers] (unknown)
> nikku_x
>
> 'Error - Division by Zero' is a common error in Metastock it can pop up
in
> any code that "/" (divide). The number of errors can be helpful is
tracking
> down the cause. I've seen it happen when a series of "no trade" days have
> the last close loaded for OHLC and then divide some value by the
difference
> between HIGH and LOW (H-L=0).
>
> If a zero in a data array is indeed the cause of the problem then
modifying
> the code to force a fractional error in place of the zero can be
effective.
> Correct operator precedence needs to be observed so the error is
eliminated
> BEFORE the division is performed otherwise your efforts will be in vain.
>
> If you think you have identified the data array that is causing the
problem
> you can do a quick check of your historical data to find the number of
> events that you have
>
> Place Cum("suspect data array"=0) in a test exploration column and run the
> exploration on all you data and forcing the required number of bars. The
> report column will give you a count of events for every issue. If you only
> have one or two issues you can create an indicator to do the same thing.
>
> I could cover a number of other troubleshooting techniques but I think you
> get the picture. If I get a moment I'll try Jose's indicator as posted on
> the issues you mention and see what happens.
>
> I have a similar problem when using the Security function in 8.01 where I
> KNOW I've eliminated the possibility of "Divide by Zero error", and yet
> under certain defined conditions I can create it but not find the root
> source code.
>
> Roy
>
> > Here is a formula which was very kindly provided to me by Jose, that
> > super formula-writer :)
> >
> > It is meant to describe the slope of a line in MS. I was using this
> > with no problems for 2 days - then yesterday, when I went to open an
> > indicator I wrote which quotes this one, a message came up
> > saying 'Error - Division by Zero'. This message was not coming up
> > before and I was using the same charts - common INDU stocks like GE,
> > MMM, etc. Has anyone seen MS acting in a similar way?
> >
> >
> > Indicator/Oscillator Slope v2.0
> > -100~+100% / -90~+90 degrees}
> > {©Copyright 2003 Jose Silva}
> >
> >
> > x:=Mov(Mov(
> > ((C-LLV(L,7))/(HHV(H,7)-LLV(L,7)))*100
> > ,3,S),3,S);
> >
> > smooth:=Input("Smoothing periods",1,252,10);
> > plot:=Input("plot: underlying indicator=1, Slope=2",1,2,2);
> > y:=Input("Range adjustor (0.1~100)",0.1,100,5);
> > display:=Input("display -100~100%=1, -90~90 degrees=2",1,2,2);
> >
> > LRlast:=x;
> > LRS:=x-Ref(x,-1);
> > LRprev:=LRlast-LRS;
> >
> > a:=Min(LRlast,LRprev)/Max(LRlast,LRprev);
> > LRratio:=(If(LRlast>LRprev,2-a,a)-1)*y;
> > LRSdeg:=If(LRratio<0,Atan(LRratio,1)-360,
> > Atan(LRratio,1));
> > LRSper:=LRSdeg*10/9;
> > LRStrue:=If(display=2,LRSdeg,LRSper);
> >
> > {smoothing alternative 1}
> > LRStrue:=If(smooth=1,LRStrue,
> > Mov(LRStrue,smooth,E));
> >
> > {smoothing alternative 2}
> > {LRStrue:=If(smooth=1,LRStrue,
> > LinRegSlope(LRStrue,smooth));}
> >
> > If(plot=1,x,LRStrue)
> >
> >
> >
> >
> >
> >
> >
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> >
> >
> >
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> >
> >
> >
> >
> >
>
>
>
>
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