This code snippet demonstrates how to implement a Zero-Lag Moving Average Convergence Divergence (MACD) indicator using the ProBuilder programming language. The Zero-Lag MACD aims to reduce the lag associated with standard MACD calculations by using Double Exponential Moving Averages (DEMA).

defparam drawonlastbaronly=true
x = close

//Calcul DEMA[12]
indic1 = ExponentialAverage[12](close)
indic2 = ExponentialAverage[12](indic1)
A = indic1[1]
B = indic2[1]
Lox = 264*A-143*B

//Calcul DEMA[26]
indic3 = ExponentialAverage[26](close)
indic4 = ExponentialAverage[26](indic3)
C = indic3[1]
D = indic4[1]
Fast = 1300*C-675*D

//Calcul MACD ZERO LAG bougie courante
e = x*(17416/123201)+264/169*A-11/13*B-1300/729*C+25/27*D

//Calcul DEMA[9](e)
indic5 = ExponentialAverage[9](e)
indic6 = ExponentialAverage[9](indic5)
I = indic5[1]
J = indic6[1]
Sign = 144*I-80*J

//Calcul MACD ZEROLAG bougie[1]
z11 = DEMA[12](close)
z22 = DEMA[26](close)
f = z11[1] – z22[1]

//Calcul de y pour que MACD ZR – MACDZR[1] = 0 soit e – f =0
y = (f*123201+169*Fast-729*Lox)/17416

//Calcul de z pour que MACD ZR – Signal soit e = z3
z = (9*Lox/4225-36*Fast/72900+Sign/100-264/169*A+11/13*B+1300/729*C-25/27*D)/(17416/123201-435400/8555625)

//Renvoie la valeur de y pour e = flag
DRAWTEXT(” ———- #z# MACD ZeroLag Reverse”,barindex,y,dialog,standard,13) coloured(204,0,0)
DRAWTEXT(” ———- #z# MACD Signal Reverse”,barindex,z,dialog,standard,13) coloured(51,204,0)
return

The code snippet above is structured into several key sections:

• Initialization: Sets the drawing parameter to only the last bar for clarity.
• DEMA Calculations: Computes the Double Exponential Moving Averages for 12 and 26 periods, which are used to calculate the fast and slow lines of the MACD.
• Zero-Lag MACD Calculation: Combines the current price with the previously calculated DEMAs to compute a zero-lag value of the MACD.
• Signal Line Calculation: Uses a DEMA over the zero-lag MACD to compute the signal line.
• Historical MACD Calculation: Calculates the MACD values for the previous bar to compare against the current zero-lag MACD.
• Adjustment Calculations: Computes values ‘y’ and ‘z’ to adjust the MACD and its signal line towards zero-lag behavior.
• Output: Displays the calculated values on the chart using the DRAWTEXT function, with specific colors for differentiation.

This example is useful for understanding advanced financial indicator calculations and their implementation in trading systems using ProBuilder.