identifying trend turnarounds

[peterjerome]

i can detect the lower lows in a downtrend, but need a way to identify the which low is the lowest value.
can you give any examples of how to do this?
many thanks,

[Doji3333]

you could use a simple FOR loop for this. All you have to to is tell this function how many recent bars you want it to review for the lowest low value.

function fFindLL(vbars) {
 var x = 0, vLL = 999999999999;
 
 for (x = 0; x > -vBars; x--) {
   vLL = Math.min(vLL, low(x));
 }
  
  return vLL;
} 

An example of using this function would be as follows

//  I want to find the lowest low of the last 15 bars
var LL15 = fFindLL(15);

//  I want to find the lowest low of the last 7 bars
var LL15 = fFindLL(7); 

[Doji3333]

BTW, if you wanted to know the lowest low AND which bar it happened on, then you would simply use this function. It returns an array with the lowest low and the bar # that returned the lowest low.

function fFindLLnB(vbars) {
 var x = 0, vLL = 999999999999, vBarID = 0;
 
 for (x = 0; x > -vBars; x--) {
   if (low(x) <= vLL) {
     vLL = Math.min(vLL, low(x));
     vBarID = x;
   }  // end of conditional if
 }  // end of for loop
  
  return new Array(vLL, vBarID);
} 

You would access the returned values like this.

var vLLB = fFindLLnB(15);

debugPrintln(" LL:"+ vLLB[0] +" Bar #:"+vLLB[1] ); 

Hope this helps??

[peterjerome]

i'll explore that suggestion. basically looking for a series of lower lows and then a higher low(turn-around) bar that would occur today.
thanks, brad.

[peterjerome]

efs code for lower low

thanks brad if you can look at this

hopefully this will help resolve my issue.
consider the code:

// priorLow = priorTemp;
if(close(-1) < close(-2) && close() > close(-1) && close(-1) < priorLow){
vColor=Color.fushcia;
priorTemp = close(-1);}

[ prints fuschia bar]

i need to be able to vary(decrease) the value in priorLow each time the "if" statement is true...using the value in close(-1).

the 1st statement prevents the "if" from ever being true.
unless commented out.
thank you.

[AssetHound]

Re: efs code for lower low

Wouldn't this work for you?
----------------------------------------------

i need to be able to vary(decrease) the value in priorLow each time the "if" statement is true...using the value in close(-1).

if(close(-1) < close(-2) && close(0) > close(-1) && close(-1) < priorLow){
vColor=Color.fushcia;
if (close(-1)<priorLow) {priorLow = close(-1);}
}

[Doji3333]

Re: efs code for lower low

Originally posted by peterjerome
thanks brad if you can look at this

hopefully this will help resolve my issue.
consider the code:

// priorLow = priorTemp;
if(close(-1) < close(-2) && close() > close(-1) && close(-1) < priorLow){
vColor=Color.fushcia;
priorTemp = close(-1);}

[ prints fuschia bar]

i need to be able to vary(decrease) the value in priorLow each time the "if" statement is true...using the value in close(-1).

the 1st statement prevents the "if" from ever being true.
unless commented out.
thank you.

I would probably do it like this. Remember, you're going to have to reset the "priorTemp" value when every new low series ends. If you don't reset it, you're making the assumption that every new low series will be lower than the last. Thus, it will only find LOWER low series that setup as you indicate in your code.

So, onto how I would do this..

var priorLow = 99999999;

function main() {

//  RESET Low Pattern on a HIGH Series
if ((close(-1) > close(-2)) && 
    (close() > close(-1))
) {
  priorLow = 99999999;
}


//  New Low Pattern : Low Series
if ((close(-1) < close(-2)) && 
    (close() > close(-1)) && 
    (close(-1) < priorLow)
){
   vColor=Color.fushcia;
   priorLow = close(-1);
}

return;
}  // end of main 

This way, you are tracking the "low series" when they happen and resetting the low series "priorLow" value with any "high series" - thus allowing any new "low series" to initiate again.

[peterjerome]

OK...thanks brad. i'm going to check this out. i appreciate your suggestions.

[peterjerome]

trend turn-around

[QUOTE]Originally posted by Doji3333
[B]BTW, if you wanted to know the lowest low AND which bar it happened on, then you would simply use this function. It returns an array with the lowest low and the bar # that returned the lowest low.

[php]

function fFindLLnB(vbars) {
var x = 0, vLL = 999999999999, vBarID = 0;

for (x = 0; x > -vBars; x--) {
if (low(x) <= vLL) {
vLL = Math.min(vLL, low(x));
vBarID = x;
} // end of conditional if
} // end of for loop

return new Array(vLL, vBarID);
}
**************************************************
brad, my 'trend turnaround' was based on an assumption ...'that the OLDEST data was tested first'. the opposite is true..it begins with the NEWEST data...so testing for a 'lower low' requires a 'higher low' in the PAST. this makes the actual 'turn around' signal an outdated event when it happens.
thanks,
peter.