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[amibroker] Comparing Two Symbols Error Problem


  • Date: Sat, 28 Nov 2009 10:39:18 -0600
  • From: Alan <alan@xxxxxxxxxxxxxx>
  • Subject: [amibroker] Comparing Two Symbols Error Problem

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 To group:

I am trying to compare AAPL to QQQQ over the last 260 trading days.  
Everything works except that I get an error with variable 'x' when 
trying to return the closing price for QQQQ 260 days ago.  Can someone 
correct the coding for variable 'x'?
 
// CURRENT SYMBOL
a = Ref(Close, -260);  // closing price one year ago
b = Close;  // current price
perf = b / a;  // Performance = current price divided by the current 
price one year ago

// FOREIGN SYMBOL
x = Foreign("QQQQ", Ref(Close, -260)); // closing price of QQQQ one year ago
y = Foreign("QQQQ", "Close"); // current price for QQQQ
perf_foreign = y / x ; // Performance = current price of QQQQ divided by 
price of QQQQ one year ago

// RELATIVE PRICE COMPARATIVE
rpc = perf / perf_foreign ; // compares the current symbol to the QQQQ's

// PLOT RESULTS
Plot(perf, "ticker", colorDarkGreen, 1);  // plot current symbol performance
Plot(perf_foreign, "QQQQ", colorRed, 1);  // plot performance of QQQQ
Plot(rpc, "Rel_Price_Comp", colorBlack, 32);  // plot Relative Price 
Comparative

Alan-
<http://www.eset.com>


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