Re: [amibroker] Changing the stop loss depending on the stock price?

["Louis Préfontaine" <rockprog80@xxxxxxxxx>]

Hi Thomas,

Those links helped me a lot.  Thanks!

I still have some questions however.  I now better understand the "for" statement, but could you please give me some precision on this?

priceatbuy=0;
highsincebuy = 0;
exit = 0;
for( i = 0; i < BarCount; i++ )
    {
        if( priceatbuy == 0 AND Buy[ i ] )
            {
                priceatbuy = BuyPrice[ i ];
            }
        if( priceatbuy > 0 )
            {
                highsincebuy = Max( High[ i ], highsincebuy );
                if( exit == 0 AND
                    High[ i ] >= ( 1 + FirstProfitTarget * 0.01 ) * priceatbuy)
                        

I now understand that for each bar "i", the program now looks if the bar value is less than the barcount and then apply the formula below.  But what I don't understand there is how can "priceatbuy" differ from 0 since it was defined as 0 just over (first line of the code).  How could "priceatbuy", which was given a value of 0 could have a value over 0 then? 

I understand that the bar in which a buy was issued is represented as Buy [i], but why the "priceatbuy ==0" before?  

Thank you!

Louis

2008/2/23, Thomas Ludwig <Thomas.Ludwig@xxxxxx>:

> I don't understand what's the "i" for and why i++ (I know ++ is
> suppose to mean that each number is added to the one before, but I am
> not sure of how this code actually helps me).  If someone could just
> tell me what this thing is actually doing, it would really help me to
> understand that code.


This is described in the manual or on
http://www.amibroker.com/guide/a_language.html and
http://www.amibroker.com/guide/keyword/for.html

Regards,


Thomas




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