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 <yukit...@...> 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 <yukit...@...> >> 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> >>
