[amibroker] Re: Two easy questions

[Snoopy]

Louis,

As I said, I am new to AB as well. 

I do have some programming experience, and have worked with a different 
Technical Analysis software for several years.  I am still trying to 
wrap my head around some of the programming concepts in AB and how they 
differ from my previous TA software programming.

I have NO idea how to ACT on Buy or Sell Signals.  I have not even made 
it to the point of plotting them for myself yet in AB.

Most of my Analysis work is visual, but I am hoping to also develop some 
more mechanical trading programs.  I have switched to AB due to the more 
robust programming environment, current technology, and the developer's 
willingness to work with users and implement their ideas.

I find it refreshing and encouraging that one of my questions to support 
has been included as an improvement to the code in the newest beta 
software release.

So, in answer to your question, I am not the guy that can help.  You 
will need to KNOW what you would want to put into those sections of the 
IF statements.  The first one might be blank, as you have already 
calculated the Signal.  The second section would be to issue your buy or 
sell command.  What and How you want to do that are really up to you.  
AFL gives you the flexibility to do just about anything you want.

Good Luck.

Louis P. wrote:
Hi,

I got an error message on this particular line, saying that the 
condition has to be numeric or boolean.  This is why I replaced == by =. 

Here is what I have as a code:

arsignal = IIf( C>MA (C,20), 1,0);
arnotrade = IIf(HHV(arsignal,5)==1, 1, 0);
if (arnotrade==1)
{
//don't ACT on Buy/Sell Signals
// probably still want to calculate them
}
else
{
// code here for ACTING on your Buy/Sell signals
}

I'm still not sure what to write on the two particular line. Could you 
please give me an example?

Thanks,

Louis


2008/8/1 Snoopy <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>

    Louis,

    It looks like you have:   if(arnotrade=1)

    It should be:    if(arnotrade==1)

    The first one does an Assignment.  The second one does a Test for
    equality;

    Also, it would be more helpful if you said what/how it didn't
    work.  Since I don't know what your error is, I am just guessing
    that it NEVER trades since you ASSIGN the no trade zone value, and
    it will then process the first section to "Don't Act on Buy/Sell
    signals".

    Blair




    Louis P. wrote:
    Hi Blair,

    Thanks for your response! 

    For Problem 1, Mike gave me a simplier solution and it works fine.

    For Problem 2, I used your code.  Here is what I wrote:

    achat=Buying condition (e.g.  C>Ma (c,20);
    arsignal = IIf(achat, 1,0);
    arnotrade = IIf(HHV(arsignal,5)==1, 1, 0);
    if (arnotrade=1)
    {

    //Sell =C< Ref (LLV (C,1),-1);
    Sell=0;
    //don't ACT on Buy/Sell Signals
    // probably still want to calculate them
    }
    else
    {

    Sell =C< Ref (LLV (C,1),-1);
    // code here for ACTING on your Buy/Sell signals
    }

    I used lowest value of 1 day only to test, but unfortuntately it
    does not work...  Should have an easiest way?!

    Thanks!

    Louis



    2008/7/30 Blair <[EMAIL PROTECTED]
    <mailto:[EMAIL PROTECTED]>>

        Louis,

        I am new to AB, but hopefully this can help out...

        First:
        Create an array for the period that you want to plotshapes.
        Have your code assign the value to the array.
        Have your code check for the value using ref(arrayname,-1).

        Sample code:
        arplot = iif(somecondition,1,0);
        plotcondition = ref(arplot,-1);
        if (plotcondition==1)
        plotshape(....).;

        Second:
        Similar to above, use an array and check if you have a signal
        within
        last x(5) periods.

        Sample code:
        arsignal = iif(yourbuyorsellsignalcondition, 1,0);
        arnotrade = iif(HHV(arsignal,5)==1, 1, 0);
        if (arnotrade==1)
        {
        //don't ACT on Buy/Sell Signals
        // probably still want to calculate them
        }
        else
        {
        // code here for ACTING on your Buy/Sell signals
        }

        I hope this is helpful for you.

        Blair



        --- In amibroker@yahoogroups.com
        <mailto:amibroker%40yahoogroups.com>, "Louis P."
        <[EMAIL PROTECTED]> wrote:
        >
        > Hi,
        >
        > I have* two* easy questions, if anyone can help me.
        >
        > *First*, I'd like to draw plotshapes not on the period the
        signal
        was issued
        > but on the period after the signal was issued. How can that
        be done?
        >
        > *Then*, (I asked this question already on the web site of
        the group,
        but for
        > some reason I didn't receive it in my mailbox so maybe
        there is a
        problem.
        > If you already received this question, please discard this
        one), I
        wonder
        > how to create a no-trade zone:
        >
        > I know how to do an automatic "sell after X period":
        >
        > Buy = c>ma (c,20);
        > Buy = Exremspan (Buy,5);
        > Sell = Ref (Buy,-5);
        >
        > I'd like to set a trade system that would begin to look for
        signals
        AFTER
        > that "no-trade" zone.
        >
        > E.g. In the example above, I'd like the system to do
        nothing for the
        first 5
        > bars after my entry and then, and only then, check for an exit
        signal. How
        > would you do that?
        >
        > Thanks a lot, and sorry if you received question 2 twice!
        > Louis
        >



    -- 
    *Snoopy *
    "Still trying to shoot down that Red Baron"


 

--
*Snoopy *
"Still trying to shoot down that Red Baron"