Pinescript trading view multi time frame RSI - Allows you to plot upto 3 MTF RSI's on one panel

MutliTimeFramRSI.txt

// All credits go to CMoody for the original Idea...
// THE MTFRSI is an extension of his original script to now encorporate 3RSI's on one panel
study(title="TraderX0 3-RSI MTF", shorttitle="X0_3_RSI_MTF", precision=0)

//candle source
src = close

//rsi setup
//first RSI inputs
firstRsiTimeframe = input(title="Select 1st RSI Timeframe", type=resolution, defval="60")
len  = input(14, minval=1, title="1st RSI Length")

//second RSI inputs
isDisplaySecondRsi = input(false, title="Show 2nd RSI?")
secondRsiTimeframe = input(title="Select 2nd RSI Timeframe? Check Box Above", type=resolution, defval="240")
len2 = input(14, minval=1, title="2nd RSI Length")

//third RSI inputs
isDisplayThirdRsi = input(false, title="Show 3rd RSI?")
thirdRsiTimeframe = input(title="Select 3rd RSI Timeframe? Check Box Above", type=resolution, defval="D")
len3 = input(14, minval=1, title="3rd RSI Length")


//AREA FOR DISPLAYING RSI PROPERTIES
// oversold and overbought lines
upLine = input(70, minval=50, maxval=90, title="Upper Line Value?")
lowLine = input(30, minval=10, maxval=50, title="Lower Line Value?")
sml = input(false, title="Display Mid Line?")
sbh = input(false, title="Highlight When 1st RSI is Above/Below High/Low Lines?")
sch = input(false, title="Highlight When 1st RSI Cross?")


//calculate 1st rsi values
up = rma(max(change(src), 0), len)
down = rma(-min(change(src), 0), len)
rsi = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))
outRSI = security(tickerid, firstRsiTimeframe, rsi)

//calculate 2nd rsi values
up2 = rma(max(change(src), 0), len2)
down2 = rma(-min(change(src), 0), len2)
rsi2 = down2 == 0 ? 100 : up2 == 0 ? 0 : 100 - (100 / (1 + up2 / down2))
outRSI2 = security(tickerid, secondRsiTimeframe, rsi2)


//calculate 3rd rsi values
up3 = rma(max(change(src), 0), len3)
down3 = rma(-min(change(src), 0), len3)
rsi3 = down3 == 0 ? 100 : up2 == 0 ? 0 : 100 - (100 / (1 + up3 / down3))
outRSI3 = security(tickerid, thirdRsiTimeframe, rsi3)


//TODO NEED TO RE-WRITE THIS SECTION FOR BETTER LOGIC - CHANGE THIS AS YOU WISH
//calculate rsi display logic - below is key to indicating buy or sell 
aboveLine = outRSI > upLine ? 1 : 0
belowLine = outRSI < lowLine ? 1 : 0
crossUp = outRSI[1] <  lowLine and outRSI > lowLine ? 1 : 0
crossDn = outRSI[1] >  upLine and outRSI < upLine ? 1 : 0


//Get ui logic from calculated rsi condistions
bgcolor(sbh and aboveLine ? red : na, transp=70)
bgcolor(sbh and belowLine ? green : na, transp=70)
bgcolor(sch and crossUp ? lime : na, transp=40)
bgcolor(sch and crossDn ? red : na, transp=40)


//plot first rsi line
plot(outRSI, title="RSI", style=line, linewidth=2, color=blue)

//plot second rsi line if selected
plot(isDisplaySecondRsi and outRSI2 ? outRSI2 : na, title="2nd RSI - Different Time Frame?", style=line, linewidth=2, color=purple)

//plot third rsi line if selected
plot(isDisplayThirdRsi and outRSI3 ? outRSI3 : na, title="3rd RSI - Different Time Frame?", style=line, linewidth=2, color=green)


//plots the upper and lower lines and mid lines
p1 = plot(upLine, title= "Upper Line", style=solid, linewidth=2, color=black)
p2 = plot(lowLine, title= "Lower Line", style=solid, linewidth=2, color=black)
plot(sml and 50 ? 50 : na, title="Mid Line", style=line, linewidth=1, color=black)

//EOF

But why are you calculating RSI manually? Just wondering...

rp_security(_symbol, _res, _src) =>
request.security(_symbol, _res, _src[barstate.isrealtime ? repainting ? 0 : 1 : 0], barmerge.gaps_off, barmerge.lookahead_on)

rsi = rp_security(syminfo.tickerid, tf, ta.rsi(src, length))