Support ta.dmi

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[tsuz]

This was tested using this code, much thanks to this script

Code

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © tak215

//@version=5
indicator("go-pine CCI Test", overlay = false)

openval  = array.from(11.3, 12.9, 11.0, 19.2, 18.1, 19.4, 19.1, 10.6, 18.8, 17.1)
highval  = array.from(19.7, 19.1, 18.8, 19.6, 19.5, 19.8, 19.5, 19.9, 19.0, 17.6)
lowval   = array.from(11.1, 12.3, 10.3, 11.7, 11.2, 13.5, 12.9, 10.3, 12.4, 10.0)
closeval = array.from(16.5, 18.7, 18.2, 11.9, 19.3, 14.2, 14.4, 11.0, 14.7, 10.3)
volumeval= array.from(11.6, 13.0, 13.8, 15.9, 16.8, 19.1, 14.7, 11.7, 17.4, 15.0)

vals (index) =>
    if index >= 0 and array.size(closeval) > index
        [array.get(openval, int(index)),array.get(highval, int(index)),array.get(lowval, int(index)),array.get(closeval, int(index)), array.get(volumeval, int(index))]


[o, h, l, c, v] = vals(array.size(openval) - (last_bar_index - bar_index))

hlc3v = (h + l + c) / 3


dirmov(len) =>
	up = ta.change(high)
	down = -ta.change(low)
	plusDM = na(up) ? na : (up > down and up > 0 ? up : 0)
	minusDM = na(down) ? na : (down > up and down > 0 ? down : 0)
    tr = na(high[1])? high-low : math.max(math.max(high - low, math.abs(high - close[1])), math.abs(low - close[1]))
	truerange = ta.rma(tr, len)
	plus = fixnan(100 * ta.rma(plusDM, len) / truerange)
	minus = fixnan(100 * ta.rma(minusDM, len) / truerange)
	[plus, minus]

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

dirmov_custom(highsrc, lowsrc, closesrc, len) =>
	up = ta.change(highsrc)
	down = -ta.change(lowsrc)
	plusDM = na(up) ? na : (up > down and up > 0 ? up : 0)
	minusDM = na(down) ? na : (down > up and down > 0 ? down : 0)
    tr = na(highsrc[1])? highsrc-lowsrc : math.max(math.max(highsrc - lowsrc, math.abs(highsrc - closesrc[1])), math.abs(lowsrc - closesrc[1]))
	truerange = ta.rma(tr, len)
	plus = fixnan(100 * ta.rma(plusDM, len) / truerange)
	minus = fixnan(100 * ta.rma(minusDM, len) / truerange)
	[plus, minus]

adx_custom(highsrc, lowsrc, closesrc, dilen, adxlen) =>
	[plus, minus] = dirmov_custom(highsrc, lowsrc, closesrc, dilen)
	sum = plus + minus
	adx = 100 * ta.rma(math.abs(plus - minus) / (sum == 0 ? 1 : sum), adxlen)

[plus,minus]=dirmov_custom(high, low, close, 4)
adx2 = adx_custom(high,low,close, 4, 3)
// [plus,minus]=dirmov_custom(h, l, c, 4)
// adx2 = adx_custom(h,l,c, 4, 3)

[diplus, diminus, adx] = ta.dmi(4, 3)

plot(adx2-adx , color=color.white)
plot(diplus-plus , color=color.blue)
plot(diminus-minus , color=color.yellow)