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Barry,
I really recommend to read this article:
http://www.amibroker.com/kb/2008/07/03/quickafl/
this line does the same thing as your for loop, but you need to be
aware that BarCount is changing as it explained in the above referenced article.
Plot(HHV(C,BarCount),"a",colorRed);
Zsolt
--- In amibroker@xxxxxxxxxxxxxxx, "Barry" <razzbarry@xxx> wrote:
>
> I am not new to Ami, been using it since 2003. But at times the array processing drives me nuts. I tried to use barssince and looked at the buy and sell arrays before they were set. so they were still nulls even when I initialized them to buy = sell = 0;
>
> But to try to understand what the arrays were doing I wrote a stupid little program to see what was going on. The code is below.
>
> What I am trying to do is save the highest hi in an array called theHi. I set the first cell in theHi to the value of in the first cell of the close. Then I compare them but theHi follows the close even when the close goes down.
>
> Then I wrote the same function in a for loop and it works fine.
>
> Then I added the formula to Excel and it worked correctly.
> =IF(C3>D2,C3,D2) where C has the close and D the hi array values. Here I also set the hi in cell 2 to the first value of Close.
> SO excel works fine with the same formula as Afl but Afl fails.
>
> I must be missing something really basic. Can anyone tell me why Ami won't allow me to scan through the close array and save the high?
>
> Thanks,
> Barry
>
> _SECTION_BEGIN("TestBarsSince");
>
> _N(Title = StrFormat("BarsSince test - {{INTERVAL}} {{DATE}} \nOpen %g, Hi %g, Lo %g, Close %g (%.1f%%) Vol " +WriteVal( V, 1.0 ) +" {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 )) ));
>
> Plot( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | styleBar ); // shows all style options
>
> theHi[0] = C[0];
> theHi = IIf(C > Ref(theHi, -1), C, Ref(theHi, -1));
> Plot(theHi, "\nTheHi", colorBlue );
>
> forHi[0] = C[0];
> for (i = 1; i < BarCount; ++i)
> {
> if(C[i] > forHi[i-1]) forHi[i] = C[i]; else forHi[i] = forHi[i-1];
> }
>
> Plot(forHi, "\nHi with for loop", colorGreen);
>
> _SECTION_END();
>
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