PureBytes Links
Trading Reference Links
|
Hi,
Nothing wrong with wanting to understand the mechanics. Before getting into that, however, I did not understand your comment
"it starts to count wrong(should count to 3, but counts to 2 only considering the 1st triple of crossovers, probably due to initializing the EMA200) "
What exactly do you mean by that? Can you give a specific example citing a specific symbol over a specific date range and indicate what you expected to see vs. what you are seeing?
Looking at your original post; - Your first attempt should not be using AND. Two separate statements separated by ';' is the correct way to go, as you had done in the second attempt.
- In your second attempt, you are using the wrong condition for incrementing Counter. You should be checking for "true" values (i.e. non zero).
Here is a corrected version of your code. I believe that it will give you what you want, and, in my tests anyway, line up exactly with the non looping version that I sent you originally.
/* Option 1
EMA1 = EMA( C, 10 );
EMA2 = EMA( C, 200 );
Plot( EMA1, "EMA10", colorRed, styleLine );
Plot( EMA2, "EMA20", colorBlue, styleLine );
Buycross[0] = 0;
exit[0] = 0;
threshold = 3;
multiplier = 1;
Buycross = Cross( EMA1, EMA2 );
Counter = Cum( Buycross );
// start loop
for ( i = 0; i < BarCount;i++ )
{
if ( Counter[i] == threshold*multiplier )
{
multiplier++;
exit[i] = 1; // separate statements, not "AND"!
}
}
printf( "buycross:\n" );
WriteVal( Buycross, 1 );
printf( "counter:\n" );
WriteVal( Counter, 1 );
printf( "multiplier:\n" );
WriteVal( multiplier, 1 );
printf( "exit:\n" );
WriteVal( exit, 1 );
*/
/* Option 2
EMA1 = EMA( C, 10 );
EMA2 = EMA( C, 200 );
Plot( EMA1, "EMA10", colorRed, styleLine );
Plot( EMA2, "EMA20", colorBlue, styleLine );
Buycross[0] = 0;
exit[0] = 0;
COUNTER = 0;
threshold = 3;
multiplier = 1;
Buycross = Cross( EMA1, EMA2 );
// start loop
for ( i = 0; i < BarCount;i++ )
{
if ( buycross[i] != 0 ) // Check for NOT zero!
{
counter++;
}
if ( Counter == threshold*multiplier )
{
multiplier++;
exit[i] = 1;
}
}
printf( "buycross:\n" );
WriteVal( Buycross, 1 );
printf( "counter:\n" );
WriteVal( Counter, 1 );
printf( "multiplier:\n" );
WriteVal( multiplier, 1 );
printf( "exit:\n" );
WriteVal( exit, 1 );
*/
Mike --- In amibroker@xxxxxxxxxxxxxxx, "Matthias" <m.kuschel31@xxx> wrote: > > > Hello, > > Thanks to all for the prompt reply. (I just figured out how to format > this, my 1st post looked a little strange). > > EMA1 = EMA(C, 10); > > EMA2 = EMA(C, 200); > > Buycross = Cross(EMA1, EMA2); > > Counter = Cum(Buycross); > > Triples = Cross(Counter % 3 == 0, 0); > > Plot(EMA1,"EMA10", colorRed,styleLine); > > Plot(EMA2,"EMA20",colorBlue,styleLine); > > Plot(Triples, "Triples", colorGreen, styleOwnScale | styleHistogram); > > This code works absolutely fine, many thanks, only problem here: it > starts to count wrong(should count to 3, but counts to 2 only > considering the 1st triplele of crossovers, probably due to intializing > the EMA200) any suggestions? But I need you to understand where I am > coming from: > > Obviously you are much more experienced in writing afl than me and I get > Mike's basic concept of avoiding loops for proefficient coding and the > "EMA-plot-labeling" was not correct. > > You have to understand that I am trying to realize/code my ideas and the > 2nd code is where I started off and probably would start off again, be > it good or bad programming. I do have your solution to my problem now, > but I still don't understand why my "concept" does not do the job. Of > course I did read the articles on "How AFL works", this was were I > started and also got a hand on the barcount funtion which I thought was > the problem (not counting the whole OHLC-array due to faster processing > speed). I also asked my brother on this simple one, who is used to > programming C. As AFL is "C-based" I would have assumed this code should > work. Please help me to understand what went wrong / is wrong in my > logic here, I consider understanding this basic concept to be very > important for future purpose. > > Thanks in advance, > > Matthias >
__._,_.___
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
__,_._,___
|