Re: [amibroker] Re: Two easy questions, AmiBroker Email List Archive

Hi,

Thank you for your response. I will try to work a way with testing buying/selling conditions, but what about the error == and =?

Thanks,

Louis

2008/8/2 Snoopy <snoopy.pa30@xxxxxxxxx>

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 <snoopy.pa30@xxxxxxxxx>

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 <snoopy.pa30@xxxxxxxxx>

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@xxxxxxxxxxxxxxx, "Louis P." <rockprog80@xxx> 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"