Rick, 1. No. LastValue(array) simply returns a number that is the last value of the array... it doesn't change the array in any way at all. 2. I don't believe so... but I will need to confirm when I get home. As the function says, it should just return the last value of the array... which will include the current status (before a bar has completed) but not future status.
--- In [email protected], Rick Osborn <ri...@...> wrote: > > yup > tried it and it works just as well. > I always thought, however, that when you use LastValue, you get an array with > all values equal to the last value. > To me that presents two problems > 1 - you lose all the prior values of the array, (is this true????) > 2 - you potentially look into the future > > > > Best Regards > Rick Osborn > > > > > ________________________________ > From: Rob <sidharth...@...> > To: [email protected] > Sent: Sat, June 12, 2010 8:29:05 PM > Subject: [amibroker] Re: impenetrable AFL > > > Ahh. Ok. In that case you could just use LastValue()... > > --- In [email protected], Yuki Taga <yukitaga@> wrote: > > > > Hi Rob, > > > > They appear to be necessary (because you get a complaint about using > > an array in an IF statement without them). But I don't exactly > > understand what is happening. This would *seem* (somehow) to convert > > an array into a Boolean value, which would maybe open up a lot of > > other possible IF statements. > > > > Yuki > > > > Sunday, June 13, 2010, 8:17:00 AM, you wrote: > > > > R> They are circular... and as far as I can see, entirely unnecessary. > > > > R> --- In [email protected], Yuki Taga <yukitaga@> wrote: > > >> > > >> Hi Rick, > > >> > > >> Hey that works for me! Thanks. Can you explain for a non programmer > > >> what the StrToNum and then NumToStr functions are actually doing in > > >> this case? It seems circular to me (convert a string to a number and > > >> then back to a string), so I don't understand what is being > > >> accomplished, or why this is necessary. > > >> > > >> Yuki > > >> > > >> Sunday, June 13, 2010, 5:52:21 AM, you wrote: > > >> > > >> RO> Yuki > > >> > > >> RO> I have the following code which changes the background gradient > > >> RO> color depending on whether a buy or sell signal is given. > > >> > > >> RO> if(StrToNum(NumToStr(BuySignal))) > > >> RO> bgColor = ColorRGB(0,66, 2); > > >> RO> else > > >> RO> bgColor = ColorRGB(66,2, 0); > > >> RO> SetChartBkGradientFill( colorBlack, bgColor); > > >> > > >> RO> > > >> RO> Perhaps you can change this to meet your needs > > >> > > >> RO> Best Regards > > >> RO> Rick Osborn > > >> > > >> > > >> > > >> > > >> RO> ________________________________ > > >> RO> From: Yuki Taga <yukitaga@> > > >> RO> To: [email protected] > > >> RO> Sent: Sat, June 12, 2010 1:24:58 AM > > >> RO> Subject: [amibroker] impenetrable AFL > > >> > > >> RO> > > >> RO> Impenetrable! (At least to me.) > > >> > > >> RO> xcolor = IIf(TSI >= SigLine, SetChartBkGradientFill( > > >> RO> ParamColor("BgTop", ColorRGB( 172,172,172 )), > > >> RO> ParamColor("BgBottom", ColorRGB( 172,172,172 ))), > > >> RO> SetChartBkGradientFill( ParamColor("BgTop", ColorRGB(140,140,140)), > > >> RO> ParamColor("BgBottom", ColorRGB(140,140,140)))); > > >> > > >> RO> SetChartBkColor(SelectedValue(xcolor)); > > >> > > >> RO> I tried that line above as > > >> RO> SetChartBkGradientFill(SelectedValue(xcolor)); but that produced a > > >> RO> syntax error. > > >> > > >> RO> I think you can see what I'm trying to do here. The idea is simple: > > >> RO> change the background gradient depending on a true/false result. The > > >> RO> gradients in this example are not the gradients I would actually use > > >> RO> (in fact they are not gradients at all, as your intelligent eyes will > > >> RO> quickly have seen). They are just test code to see if I can even > > >> RO> make it work. I cannot. > > >> > > >> RO> For one thing, the gradient does not change no matter the selected > > >> RO> value. It's static. For another thing, the margin background goes > > >> RO> to black, a hideous (although somewhat foreseen) result. > > >> > > >> RO> Okay, what am I doing wrong, and where did I miss this in the docs? > > >> RO> And what, if anything, can I do about this margin result? The only > > >> RO> way I can change the *entire* background color is by not using a > > >> RO> gradient??? (Using SetChartBkColor) How sad that would be! I can > > >> RO> make that work, at least. But not with a gradient. > > >> > > >> RO> Anything is possible in Amibroker, right? > > >> > > >> RO> Wrong? > > >> > > >> RO> Thanks, > > >> > > >> RO> Yuki > > >> > > >> > > >> RO> > > >> > > >
