Moving Average Exponential

//version=4
study(title="主图常用指标@小何", shorttitle="主图常用指标@小何",overlay=true)
emaSystem1 = input(false,title = "均线系统@斐波那契")//5,21,55,144
vegas = input(false,title = "Vegas双隧道")//144,169,576,676,12
emaSystem2 = input(false,title = "均线系统@常规时间周期")//10,20,30
boll = input(false, title = "布林带")
fastEma1 = emaSystem1?ema(close,5):na
midEma1 = emaSystem1?ema(close,21):na
slowEma1 = emaSystem1?ema(close,55):na
VIPslowEma1 = emaSystem1?ema(close,144):na
//输出均线系统1
plot(fastEma1,color = color.yellow,linewidth =2,title = "快线-5ema")
plot(midEma1,color = color.red,linewidth = 2,title = "中线-21ema")
plot(slowEma1,color = color.blue,linewidth = 2,title = "慢线-55ema")
plot(VIPslowEma1,color = color.white,linewidth = 2,title = "巨慢线-144ema")
fil1 = vegas?ema(close,12):na
fast4Ema = vegas?ema(close,576):na
slow4Ema = vegas?ema(close,676):na
fast1Ema = vegas?ema(close,144):na
slow1Ema = vegas?ema(close,169):na
//输出Vegas隧道
plot (fil1,color = color.green,linewidth = 2,title= "过滤线")
plot (fast4Ema,color = color.blue,linewidth = 2,title = "慢隧道快线")
plot (slow4Ema,color = color.blue,linewidth = 2,title = "慢隧道慢线")
plot (fast1Ema,color = color.yellow,linewidth = 2,title = "快隧道快线")
plot (slow1Ema,color = color.yellow,linewidth= 2,title = "快隧道慢线")
fastEma2 = emaSystem2?ema(close,10):na
midEma2 = emaSystem2?ema(close,20):na
slowEma2 = emaSystem2?ema(close,30):na
//输出均线系统2
plot(fastEma2,color = color.yellow,linewidth =2,title = "快线-5ema")
plot(midEma2,color = color.red,linewidth = 2,title = "中线-21ema")plot(slowEma2,color = color.blue,linewidth = 2,title = "慢线-55ema")
basis = boll?sma(close, 20):na
dev = 2 * stdev(close,20)//标准差
upper = boll?(basis + dev):na
lower = boll?(basis - dev):na
plot(basis, "中轨", color=#872323)
p1 = plot(upper, "上轨", color=color.teal)
p2 = plot(lower, "下轨", color=color.teal)
fill(p1, p2, title = "背景", color=#198787, transp=95)