PLEASE ADD VOLUME DELTA AND SESSION VOLUME PROFILE.

Hello

Please add the volume delta indicator(The indicator scans lower timeframe data to approximate up and down volume used in the delta calculation. By default, the timeframe is chosen automatically. These inputs override this with a custom timeframe) found in tradingview. The following is the pinescript code:

//@version=5
indicator("Volume Delta", format=format.volume)

lowerTimeframeTooltip = "The indicator scans lower timeframe data to approximate up and down volume used in the delta calculation. By default, the timeframe is chosen automatically. These inputs override this with a custom timeframe.
 \n\nHigher timeframes provide more historical data, but the data will be less precise."
useCustomTimeframeInput = input.bool(false, "Use custom timeframe", tooltip = lowerTimeframeTooltip)
lowerTimeframeInput = input.timeframe("1", "Timeframe")

upAndDownVolume() =>
    posVol = 0.0
    negVol = 0.0
    
    var isBuyVolume = true    

    switch
        close > open     => isBuyVolume := true
        close < open     => isBuyVolume := false
        close > close[1] => isBuyVolume := true
        close < close[1] => isBuyVolume := false

    if isBuyVolume
        posVol += volume
    else
        negVol -= volume

    posVol + negVol

var lowerTimeframe = switch
    useCustomTimeframeInput => lowerTimeframeInput
    timeframe.isseconds     => "1S"
    timeframe.isintraday    => "1"
    timeframe.isdaily       => "5"
    => "60"

diffVolArray = request.security_lower_tf(syminfo.tickerid, lowerTimeframe, upAndDownVolume())

getHighLow(arr) =>
    float cumVolume = na
    float maxVolume = na
    float minVolume = na

    for item in arr
        cumVolume := nz(cumVolume) + item
        maxVolume := math.max(nz(maxVolume), cumVolume)
        minVolume := math.min(nz(minVolume), cumVolume)

    [maxVolume, minVolume, cumVolume]

[maxVolume, minVolume, lastVolume] = getHighLow(diffVolArray)
openVolume = not na(lastVolume) ? 0.0 : na
col = lastVolume > 0 ? color.teal : color.red
hline(0)
plotcandle(openVolume, maxVolume, minVolume, lastVolume, "Volume Delta", color = col, bordercolor = col, wickcolor = col)

var cumVol = 0.
cumVol += nz(volume)
if barstate.islast and cumVol == 0
    runtime.error("The data vendor doesn't provide volume data for this symbol.")

The following is the calculations for the volume session profile: