Guppy's CBL (Count Back Line) - Indicators

This is the Count Back Line. Basically, it is a volatility based indicator developed by Daryl Guppy.
You can find some info at his website (http://www.guppytraders.com/gup332.shtml), but a very clear description can be found in his book TREND TRADING.

Disclaimer: this is the first indicator I wrote so I don’t know if it is written correctly. Be careful!

// ==  S e t t i n g s  =============================
once CBLLOWRESET = 0
once MAXCYCLES = 15

// ==  C B L   ( l o w )  ===========================
once cblLow = CBLLOWRESET
once previousCblHigh = CBLLOWRESET

// When a new high appears, we try to find the 2 lower lows back
// TODO: optimize a little bit 'cause it is not required to cycle so many times every bar
if high > previousCblHigh then
 count = 0
 currentLow = low
 for i = 1 to MAXCYCLES do
  if low[i] < currentLow then
   currentLow = low[i]
   count = count +1
   if count = 2 then
    if currentLow > cblLow then
     cblLow = currentLow
     previousCblHigh = high
    endif
    break
   endif
  endif
 next
endif

// When the close is lower than CBL, it terminates
if close < cblLow then
 cblLow = CBLLOWRESET
 previousCblHigh = CBLLOWRESET
endif

// ==  C B L   ( h i g h )  =========================
once CBLHIGHRESET = 1000
once cblHigh = CBLHIGHRESET
once previousCblLow = CBLHIGHRESET

// When a new low appears, we try to find the 2 higher highs back
// TODO: optimize
if low < previousCblLow then
 count = 0
 currentHigh = high
 for i = 1 to MAXCYCLES do
  if high[i] > currentHigh then
   currentHigh = high[i]
   count = count +1
   if count = 2 then
    if currentHigh < cblHigh then
     cblHigh = currentHigh
     previousCblLow = low
    endif
    break
   endif
  endif
 next
endif

// When the close is higher than CBL, it terminates
if close > cblHigh then
 cblHigh = CBLHIGHRESET
 previousCblLow = CBLHIGHRESET
endif

// This is a trick found on prorealcode.com: basically when the
// value is a "reset" we don't want to see any line, so that it seems CBL
// is made of segments...
cblLowAlpha = 255
if cblLow = CBLLOWRESET or cblLow[1] = CBLLOWRESET then
 cblLowAlpha = 0
endif
cblHighAlpha = 255
if cblHigh = CBLHIGHRESET or cblHigh[1] = CBLHIGHRESET then
 cblHighAlpha = 0
endif
return cblLow coloured (220, 0, 0, cblLowAlpha), cblHigh coloured (230, 160, 0, cblHighAlpha)

// == S e t t i n g s =============================

once CBLLOWRESET = 0

once MAXCYCLES = 15

// == C B L ( l o w ) ===========================

once cblLow = CBLLOWRESET

once previousCblHigh = CBLLOWRESET

// When a new high appears, we try to find the 2 lower lows back

// TODO: optimize a little bit 'cause it is not required to cycle so many times every bar

if high > previousCblHigh then

count = 0

currentLow = low

for i = 1 to MAXCYCLES do

if low[i] < currentLow then

currentLow = low[i]

count = count +1

if count = 2 then

if currentLow > cblLow then

cblLow = currentLow

previousCblHigh = high

endif

break

endif

// When the close is lower than CBL, it terminates

if close < cblLow then

cblLow = CBLLOWRESET

previousCblHigh = CBLLOWRESET

endif

// == C B L ( h i g h ) =========================

once CBLHIGHRESET = 1000

once cblHigh = CBLHIGHRESET

once previousCblLow = CBLHIGHRESET

// When a new low appears, we try to find the 2 higher highs back

// TODO: optimize

if low < previousCblLow then

count = 0

currentHigh = high

for i = 1 to MAXCYCLES do

if high[i] > currentHigh then

currentHigh = high[i]

count = count +1

if count = 2 then

if currentHigh < cblHigh then

cblHigh = currentHigh

previousCblLow = low

endif

break

endif

// When the close is higher than CBL, it terminates

if close > cblHigh then

cblHigh = CBLHIGHRESET

previousCblLow = CBLHIGHRESET

endif

// This is a trick found on prorealcode.com: basically when the

// value is a "reset" we don't want to see any line, so that it seems CBL

// is made of segments...

cblLowAlpha = 255

if cblLow = CBLLOWRESET or cblLow[1] = CBLLOWRESET then

cblLowAlpha = 0

endif

cblHighAlpha = 255

if cblHigh = CBLHIGHRESET or cblHigh[1] = CBLHIGHRESET then

cblHighAlpha = 0

endif

return cblLow coloured (220, 0, 0, cblLowAlpha), cblHigh coloured (230, 160, 0, cblHighAlpha)

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sawer36 • 07/31/2018 #
Hello, i get only the red line when i install your indicator into PRT

Roberto S. • 07/31/2018 #
Oh sorry. Can you share the instrument on which you are using it so that I can test it?
Thanks

sawer36 • 07/31/2018 #
hello, on brent oil with PRT 10.3 daily
- Roberto S. • 07/31/2018 #
  Ah ok I found it. There is a weak point in my implementation and it is the variable CBLHIGHRESET at the 36th row. I valued it at 1000 just because I’m using this indicator on stocks where values are lower than that. Unfortunately I didn’t think about all the instruments higher than that… I think I should implement the higher row in a different way (using an alternate value). At the moment if you change that variable at 100000 it should work.
  Can you try?

Bon Zo • 07/31/2018 #
Hello, ok let me give a try. Thanks for the help and this great indicator.

Bon Zo • 07/31/2018 #
Thanks it works perfectly now
- Roberto S. • 07/31/2018 #
  Thanks to you

joobeng • 07/31/2018 #
Hi, I am having problems with this indicator, the Count back lines does not show as indicated.

joobeng • 07/31/2018 #
I get area of shading above and below a horizontal line. How can I post a picture here ? Thanks

joobeng • 07/31/2018 #
Sorry, I solved the problem. I have add the CBL indicator using the spanner icon on the price chart. I was adding it using the Indicator icon and the CBL indicator appears in its own window, below the price. However, there seems to be something wrong as the price chart is very compressed. I need price to open up more in the Y-axis direction. Any clues? Thanks
- Nicolas • 07/31/2018 #
  Adjust the price settings for the Y Axis to use the price only.

XXXXVII • 07/31/2018 #
Hello

Your indicator is interesting.
However, I can’t see the orange line.
Do you have any idea what the problem is?

Faisalx Hola Ivan. Thanks for your great job. I would appreciate if you have look at my request http...

roccafragius Thank you for all these useful information!! Very great job Ivan! THank you so much

geroniman Merci Ivan, super travail. On peut toujours compter sur toi pour apporter des innovations su...

kats BONSOIR c bon merci j ai trouve ce weekend merci de votre reponse cdlt

the_giorgio Hi, nice work I would like to understand something about prorealtime code. With your ...

Iván Hello. When you use the drawcandle() instruction then in the configuration window you add ...

Doddge Hola Iván, ¿sería posible crear un screener que indique cuándo las velas coloreadas del indi...

RTR Ivan thank you for the pro-screener. I a trying to understand how to write the signals from ...

Iván Hi, Lines 62 and 63. These lines define buy and sell conditions.

jacquesgermain sì da aggiungere

Maik2404 auf welchen Wert muss ich die Kompresionsperiode stellen?

jacquesgermain — Période de compression : ce paramètre détermine la période de rétrospection utilisée pour ...

AndPar Buongiorno Nicolas, vorrei provare questo indicatore, ma quando lo inserisco in PRT mi vengo...

Nicolas Basta aggiungerlo al prezzo https://www.prorealcode.com/blog/video-tutorials/how-to-add-an-i...

Aragorna hello Nicolas, this indicator works with the last Beta version of PRT? Ive seen tha many in...

SnorreDK Works extremely well - How? How do u implement this in a startegy? Breakoutstrategy?

Keyeming Thanks, but yes same question as above, some explanations on how to read it would be appreci...

Bateson Bonjour. Merci beaucoup ! J'ai installé l'indicateur sur PRT 11 mais pour des raisons qui ...

CederTrader Hi Denis, does this indicator add to the chart as panel, or on the candles. Thanks

Nicolas Add it on the price chart as described in this video: https://www.prorealcode.com/blog/video...

Denis Hello Nicolas and Ceder Trader, Sorry, I only just saw your replies. The indicator is alre...

Xenotrax A première vue, sa à l'air d'être un indicateur très puissant sur de petites temporalités, j...

merri Bonjour Nicolas, Comment transformer cet indicateur en bot sur PRT ?

Nicolas Cela a déjà été fait, voir ce sujet: https://www.prorealcode.com/topic/strategia-con-lindica...

Sofitech le screener "resserrement" (le premier) correspond aux flèches rouge / vertes sur l'image ?

JC_Bywan Bonjour, non les flèches sur l'image correspondent aux croisements des ema15/ema60, 2e screener

jc_aries Thanks for the SCREENER. I have a doubt. Is it not necessary to put a time interval for the ...

Zigo Zou je graag helpen, maar mijn computer is in onderhoud. Einde deze week, kan ik hopelijk te...

Zigo @ DimKar Midline = (stlong + stshort)/2 Return stLong coloured(0,255,0) as"StopLong", M...

DimKar Dear Zigo thank you very much for your answer !!!

Seabiscuit Hi! I like this indicator a lot, been using it on a 30 min timeframe and usually confirms my...

Ramahu Bonjour et merci pour cet indicateur ! je l'observe sur les actions du Nasdaq et la plupart ...

Pensera Bonjour Nicolas, comment est-il possible de backtester cet indicateur? cela fait une erreu...

Nicolas Oui bien sûr, il doit y avoir pas mal de sujets dans le forum à ce propos.

simmerseb Bonjour, merci beaucoup pour cet indicateur je le trouve très clair et pertinent.

Nicolas Il doit s'agir d'un mauvais copier/coller. Je suggère de télécharger le fichier itf contenu ...

Bard Hello @Nicolas, I can get this to display in a separate indicator panel but not on Price as ...

Stenozar Hi @Nicolas, how can I put the bands on price? Thanks, Stefano

oraclus Bonjour indicateur très intéressant existe t il un screener qui détecte les actions qui donn...

IV Mcm Ce n'est pas le but de cet indicateur, mais avec un peu d'entraînement vous pourriez le code...

Yantra Thank you for sharing your good work!

Nicolas Il faut l'ajouter sur le prix avec l'icône de la clé situé en haut à gauche du graphique du ...

jerome777 merci de ta réponse

jerome777 bonjour c est bon il fonctionne parfaitement merci beaucoup

Guppy’s CBL (Count Back Line)

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