趋势骑手

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

//@version=4
strategy("趋势骑手", overlay=true)


fastlength = input(12)
slowlength = input(36)
adxlevel = input(40)

fast_ema = ema(close,fastlength)
slow_ema = ema(close,slowlength)

signal = fast_ema - slow_ema

plot(fast_ema, color = color.red)
plot(slow_ema, color = color.yellow)

adxlen = input(14, title="ADX Smoothing")
dilen = input(14, title="DI Length")
dirmov(len) =>
	up = change(high)
	down = -change(low)
	plusDM = na(up) ? na : (up > down and up > 0 ? up : 0)
	minusDM = na(down) ? na : (down > up and down > 0 ? down : 0)
	truerange = rma(tr, len)
	plus = fixnan(100 * rma(plusDM, len) / truerange)
	minus = fixnan(100 * rma(minusDM, 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)
sig = adx(dilen, adxlen)



longCondition = crossover(close, fast_ema) and (signal > 0) 
if (longCondition)
    strategy.entry("My Long Entry Id", strategy.long)
if (crossunder(sig,adxlevel))
    strategy.close("My Long Entry Id")
shortCondition = crossunder(close, fast_ema) and (signal < 0) 
if (shortCondition)
    strategy.entry("My Short Entry Id", strategy.short)
if (crossover(sig,adxlevel))
    strategy.close("My Short Entry Id")