UPD: updated hamer algo

tradingview/hammer-rsi.txt

@@ -1,28 +1,37 @@
-//@version=4
-strategy("Hammer-L RSI-S Strategy", overlay=true, initial_capital=12000, default_qty_type=strategy.cash, default_qty_value=4000)
+//@version=3
+strategy("Hammer-L RSI-S Strategy", overlay=true, initial_capital = 12000, default_qty_type = strategy.cash, default_qty_value = 4000)
 
 // Buy when hammer is observed in a downtrend
-//Bullish Hammer Up
-bhu1 = close - open > 0 and (close - open) / 3 > high - close and 
-   (open - low) / 2 > close - open and close - open > (open - low) / 8
-if bhu1 == true
-    strategy.entry("HammerLE", strategy.long, comment="HammerLE")
+// Detect downtrend
+is_DownTrend = false
+// sma100 = sma(close, 100)
+sma50 = sma(close, 50)
+// is_DownTrend := close < sma50 and sma50 < sma100
+is_DownTrend := close < sma50
 
+// Detect hammer
+len_upShadow = high - max(open,close)
+len_downShadow = min(open,close) - low
+len_body = abs(open - close)
+if is_DownTrend and len_downShadow > 0
+    if len_upShadow < len_downShadow / 5 and len_body < len_downShadow / 3
+        strategy.entry("HammerL", strategy.long, comment="HammerL")
+    
 // Sell when RSI exceeds 75
-length = input(14)
-overSold = input(30)
-overBought = input(75)
+length = input( 14 )
+overSold = input( 30 )
+overBought = input( 75 )
 price = close
-
+    
 vrsi = rsi(price, length)
 co = crossover(vrsi, overSold)
 cu = crossunder(vrsi, overBought)
 
-if not na(vrsi)
-    if cu
-        strategy.close_all(when=open < close)
+if (not na(vrsi))
+    if (cu)
+        strategy.close_all(when = open < close)
         // strategy.exit(id = "MacdCU", qty_percent = 80, comment = "RsiC80")
         // strategy.entry("Rsi75", strategy.short, comment="Rsi75")
-
+        
 //plot(strategy.equity, title="equity", color=color.red, linewidth=2, style=plot.style_areabr)