|
PureBytes Links
Trading Reference Links
|
Barry,
>> I just didn't know you could separate the
>> right side of the == with commas.
I think you might be confusing syntax here. The commas have nothing to
do with the equality statement. They are simply the standard way of
separating parameters to a function. In this case, three parameters
are being passed to the ValueWhen function, and as with all functions,
those parameters need to be separated by commas. It's the same as:
cond = intrade AND Ref(intrade,-1) == 0;
buysignal = ValueWhen(cond, ai, 1);
Regards,
GP
--- In amibroker@xxxxxxxxxxxxxxx, "Barry Scarborough" <razzbarry@xxx>
wrote:
>
> Thanks. I just didn't know you could separate the right side of the
> == with commas. That is a new concept for me. Hope it gets through
> all this white hair. Is there an explanation of this in the help text
> or other C like text?
>
> The intrade = (buy,sell); gave me a syntax check. AFL would not allow
> that but it did allow your 0,ai,1 which still blows my mind.
>
> Exrem is OK if you want to trade at the end of the bar or used in
> back testing. During live intraday trading it gets all screwed up and
> I quit using it in live trading and just look at the conditions of MA
> lines or MACD/Sig lines, etc. That does not fail when the positions
> of the lines cross multiple times within a bar. But it and maybe
> exrem still can give multiple signals which is a huge bother as
> trends slowly change directions.
>
> Thanks again,
> Barry
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Ara Kaloustian" <ara1@> wrote:
> >
> > Barry,
> >
> > ...intrade AND Ref(intrade,-1) == 0 is the condition (when
> intrade turned
> > from zero to 1)
> > ... "ai" is the array address (same as BarIndex() but it is
> corrected for
> > the effects of Quick AFL)
> > ... "1" is the first occurance of the condition stated above.
> >
> > ExRem should work if used properly, but I have never been able to
> use it
> > properly ... there are some quircks to it ... I think
> >
> > Ara
> >
> > ----- Original Message -----
> > From: "Barry Scarborough" <razzbarry@>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Tuesday, October 14, 2008 4:52 AM
> > Subject: [amibroker] Re: AFL code question - ARA please explain ==
> 0,ai,1
> >
> >
> > > Ara that's great.
> > > But what is == 0,ai,1 in the line
> > > buysignal = ValueWhen(intrade AND Ref(intrade,-1) == 0,ai,1);
> > > Please explain the syntax. I have never seen that done.
> > >
> > > Thanks, Barry
> > >
> > > I had to put an ExRem before (Buy,Sell);
> > > To see this work use this example:
> > >
> > > fMA = MA(C, 4);
> > > Buy = fMA > Ref(fMA, -1);
> > > Sell = fMA < Ref(fMA, -1);
> > > // intrade will become 1 at first signal and stay at that value
> until
> > > a Sell Signal arrives
> > > intrade = ExRem(Buy, Sell);
> > > // this will give you the arrayindex value of the Buy Signal.
> > > buysignal = ValueWhen(intrade AND Ref(intrade,-1) == 0, ai, 1);
> > >
> > > Plot(C, "", colorBlack, styleBar);
> > > Plot(intrade, "Intrade", colorBlue, styleOwnScale);
> > > Plot(buysignal , "buysignal ", colorGreen, styleOwnScale);
> > > PlotShapes(Buy * shapeUpArrow, colorGreen, 0, L, -5 );
> > > PlotShapes(Sell * shapeDownArrow, colorRed, 0, H, -5 );
> > > PlotShapes(intrade * shapeCircle, colorBlue, 0, C , 0);
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Ara Kaloustian" <ara1@> wrote:
> > >>
> > >> You need to first make sure that you eliminate duplicate signals,
> > > so that
> > >> they will not affect the valu you save
> > >>
> > >> Try this:
> > >> bi = barindex();
> > >> ai = bi - bi[0];
> > >> intrade = (Buy,Sell); // intrade will become 1 at first
> signal
> > > and stay
> > >> at that value untill a sell signal arrives
> > >> buysignal = valuewhen(intrade and Ref(intrade,-1) ==0,ai,1); //
> > > this will
> > >> give you the arrayindex value of the buy signal.
> > >>
> > >> BuyHigh = high[buysignal];
> > >>
> > >> ----- Original Message -----
> > >> From: "richpach2" <richpach2@>
> > >> To: <amibroker@xxxxxxxxxxxxxxx>
> > >> Sent: Monday, October 13, 2008 10:31 PM
> > >> Subject: [amibroker] AFL code question
> > >>
> > >>
> > >> > Hello AB Users,
> > >> >
> > >> > Can someone explain please, how do I reference a selected value
> > > of the
> > >> > signal bar?
> > >> > For instance if signal bar is when signal=cross( close, ema
> > > (close,9))
> > >> > then, how do I store "High" of the signal bar for the future
> use
> > > so, I
> > >> > can check if C>"Signal Bar High" occurred in the following
> bars?
> > >> >
> > >> > I looked at BarSince, VarSet, ValueWhen and SelectedValue but,
> I
> > > am a
> > >> > little confused and unsure which one should I use.
> > >> >
> > >> > Any help or comment will be appreciated.
> > >> >
> > >> > Regards
> > >> > Richard
> > >> >
> > >> >
> > >> > ------------------------------------
> > >> >
> > >> > **** IMPORTANT ****
> > >> > This group is for the discussion between users only.
> > >> > This is *NOT* technical support channel.
> > >> >
> > >> > *********************
> > >> > TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail
> > > directly to
> > >> > SUPPORT {at} amibroker.com
> > >> > *********************
> > >> >
> > >> > For NEW RELEASE ANNOUNCEMENTS and other news always check
> DEVLOG:
> > >> > http://www.amibroker.com/devlog/
> > >> >
> > >> > For other support material please check also:
> > >> > http://www.amibroker.com/support.html
> > >> >
> > >> > *********************************
> > >> > Yahoo! Groups Links
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >> >
> > >>
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > **** IMPORTANT ****
> > > This group is for the discussion between users only.
> > > This is *NOT* technical support channel.
> > >
> > > *********************
> > > TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail
> directly to
> > > SUPPORT {at} amibroker.com
> > > *********************
> > >
> > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > > http://www.amibroker.com/devlog/
> > >
> > > For other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
> > > *********************************
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
------------------------------------
**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
*********************
TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
*********************
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
*********************************
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|