I have created this simple system in excel and would like to try to convert it 
to AFL. If anyone can help, I would appreciate it. 

===================================DEFINITIONS=======================================
MACD = EMA12 – EMA26
9 Day Signal = 9 Day Average MACD
Histogram = MACD - 9 Day Signal
==================================== Hist Trend 
========================================
Hist Trend = If Histogram > 0, 1, -1
=IF(Histogram Today >0 , IF(Hist Trend Yesterday = 5 , 5, Hist Trend Yesterday 
+1) , IF(Histogram Today > Histogram Yesterday , Hist Trend Yesterday , IF(Hist 
Trend Yesterday =-5 , -5, Hist Trend Yesterday -1)))
==================================== MACD Trend 
======================================
MACD Trend = If MACD > 0, 1, -1
=IF(MACD Today > 0 , IF(MACD Trend Yesterday = 5 , 5, MACD Trend Yesterday +1) 
, IF(MACD Today > MACD Yesterday , MACD Trend Yesterday , IF(MACD Trend 
Yesterday = -5 , -5 , MACD Trend Yesterday -1)))
===================================== MA Trend 
=======================================
MA Trend = IF (Close > MA20 , 1 , -1)
=IF(Close Today > MA20 Today , IF(MA Trend Yesterday = 5 , 5, MA Trend 
Yesterday +1) , IF(Close Today > Close Yesterday, MA Trend Yesterday , IF(MA 
Trend Yesterday = -5 , -5 , MA Trend Yesterday -1)))
======================================TREND=========================================
Trend = (Hist Trend + (MACD Trend * 3) + (MA Trend * 2)) / 6    //Weighted 
Average of Three Trend Indicators
Trend Average = AVERAGE (10 Day Trend)
=IF (Trend Average Today >= 0 , IF (Trend Average Yesterday < 0 , "BUY" , 
"Hold") , IF (Trend Average Yesterday > 0 , "SELL" , "Hold"))
=========================================END========================================


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