# Currency Index Indicator

The currency index represents the change in one currency by reference to all other
foreign currencies. The index is calculated by taking the average of the variations
in one currency by reference to the others. Represented in graphical form, it allows
for easy visualization of the individual trends in each currency.
The index of the currencies is a simple arithmetic average of the variation in each pair.
For each index, to have fixed the value 100 on 1 January 2000.

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```////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 04/07/2014
// The currency index represents the change in one currency by reference to all other
// foreign currencies. The index is calculated by taking the average of the variations
// in one currency by reference to the others. Represented in graphical form, it allows
// for easy visualization of the individual trends in each currency.
// The index of the currencies is a simple arithmetic average of the variation in each pair.
// For each index, to have fixed the value 100 on 1 January 2000.
////////////////////////////////////////////////////////////
study(title="Currency Index USD", shorttitle="Currency Index USD")
Start_USDEUR = input(0.9930, minval=0)
Start_USDCHF = input(1.5902, minval=0)
Start_USDGBP = input(0.6182, minval=0)
Start_USDJPY = input(102.21, minval=0)
Start_USDAUD = input(1.5237, minval=0)
Start_USDNZD = input(1.9113, minval=0)
USDEUR =  (1 / security("EURUSD",period, close) * 100) / Start_USDEUR
USDCHF = (security("USDCHF",period, close) * 100) / Start_USDCHF
USDGBP =  (1 / security("GBPUSD",period, close) * 100) / Start_USDGBP
USDJPY = (security("USDJPY",period, close) * 100) / Start_USDJPY
USDAUD =  (1 / security("AUDUSD",period, close) * 100) / Start_USDAUD
USDNZD  = (1 / security("NZDUSD",period, close) * 100) / Start_USDNZD
CurSum = (abs(USDEUR) + abs(USDCHF) + abs(USDGBP) + abs(USDJPY) + abs(USDAUD) + abs(USDCAD) + abs(USDNZD)) / 7
nRes = 100 - CurSum
plot(nRes, color=blue, title="Currency Index USD")```