ADX with option to choose Source

Hi,

Could someone to point how to add for ADX D+ D- indicator ability to calculate its data from other sources (by default it takes data from current chart) please?

Example:

By viewing EURUSD chart I want to use ADX D+ D- calculated from DXY index (or USDOLLAR)?

Thanks very much.

Conventional ADX D+ D- indicator’s script below:

study(Directional Movement, shorttitle=DMI)
adxlen = input(17, title=ADX Smoothing)
dilen = input(17, title=DI Length)
dirmov(len) =>
up = change(high)
down = -change(low)
truerange = rma(tr, len)
plus = fixnan(100 * rma(up > down and up > 0 ? up : 0, len) / truerange)
minus = fixnan(100 * rma(down > up and down > 0 ? down : 0, len) / truerange)
[plus, minus]

adx(dilen, adxlen) =>
[plus, minus] = dirmov(dilen)
sum = plus + minus
adx = 100 * rma(abs(plus - minus) / (sum == 0 ? 1 : sum), adxlen)
[adx, plus, minus]

[sig, up, down] = adx(dilen, adxlen)

plot(sig, color=red, title=ADX)
plot(up, color=blue, title=+DI)
plot(down, color=orange, title=-DI)

Hi @pcnetnet

You have to use the security function for calling another instrument

[code]
// @version=4
study(Directional Movement, shorttitle=DMI)
adxlen = input(17, title=ADX Smoothing)
dilen = input(17, title=DI Length)
dirmov(len) =>
up = change(high)
down = -change(low)
truerange = rma(tr, len)
plus = fixnan(100 * rma(up > down and up > 0 ? up : 0, len) / truerange)
minus = fixnan(100 * rma(down > up and down > 0 ? down : 0, len) / truerange)
[plus, minus]

adx(dilen, adxlen) =>
[plus, minus] = dirmov(dilen)
sum = plus + minus
adx = 100 * rma(abs(plus - minus) / (sum == 0 ? 1 : sum), adxlen)
[adx, plus, minus]

[sig, up, down] = adx(dilen, adxlen)

// calling DYX data here
// using the timeframe.period for the same timeframe

[outSig, outUp, outDown] = security(TVC:DXY, timeframe.period, [sig, up, down], barmerge.gaps_off, barmerge.lookahead_on)

// end of update

plot(outSig, color=red, title=ADX)
plot(outUp, color=blue, title=+DI)
plot(outDown, color=orange, title=-DI)
[/code]