This is the code for the SD channel.  Can I extract the start and end points of the SD  for a defined period? (say 120 periods on 1mn timeframe)   A slope will be good enough if I can’t do angle and start and end point would give me that.

/PRC_Std and Ste LinRegChannel | indicator
//Standard Deviation and Standard Error
//Linear Regression Channel
//12.03.2019
//Nicolas @ http://www.prorealcode.com
//Sharing ProRealTime knowledge

defparam drawonlastbaronly=true
defparam calculateonlastbars=1000
// — settings
//lookback= 200 //channel period
//ChannelType = 1 //1= Standard Deviation ; 2= Standard Erro
//NbDeviation = 1 //Deviation multiplier
//colorRed = 255
//colorGreen = 255
//colorBlue = 0
// — end of settings

sumx = 0
sumy = 0
sumxy = 0
sumx2 = 0

for cmpt = lookback downto 0 do
tmpx = cmpt
tmpy = close[cmpt]
sumy = sumy+tmpy
sumx = sumx+tmpx
sumx2 = sumx2 + (tmpx*tmpx)
sumxy = sumxy + (tmpy*tmpx)
next

n = lookback+1

if (sumx2 = sumx * sumx) then // protection to avoid infinite values
b = sumxy – sumx * sumy
else
b = (n * sumxy – sumx * sumy) / (n * sumx2 – sumx * sumx)
endif
a = (sumy – b * sumx) / n

drawsegment(barindex[lookback],a[1]+b[1]*lookback,barindex,a[1]+b[1]*0) coloured(colorRed,colorGreen,colorBlue)style(dottedline,1)

//channel
if ChannelType = 1 then //Standard Deviation
dat = std[lookback]*NbDeviation
else
dat = ste[lookback]*NbDeviation
endif
drawsegment(barindex[lookback],(a[1]+b[1]*lookback)+dat[1],barindex,a[1]+b[1]*0+dat[1]) coloured(colorRed,colorGreen,colorBlue)style(line,1)
drawsegment(barindex[lookback],(a[1]+b[1]*lookback)-dat[1],barindex,a[1]+b[1]*0-dat[1]) coloured(colorRed,colorGreen,colorBlue)style(line,1)

return

timeframe(1mn)

il = ((LinearRegressionSlope[120](close))/close)*10000

bollup = EndPointAverage[120](close) + (2 * STD[120](close))
bolldn = EndPointAverage[120](close) - (2 * STD[120](close))

if close crosses over bollup and il >1 then
go = 1
else
go = 0
endif


if close crosses under bolldn and il <-1 then
go = -1
endif


timeframe(daily)
adv = average[5](volume)
w1 = adv > 300000
w2 = MedianPrice >2
w3 = summation[1](volume)>50000

timeframe(1mn)

if  go<>0 and w1 and w2 and w3 then
screener (il as "x")
endif

So this is my first attempt, but w3 seems not to be working right, and in my screener column the volume shows only small values like snapshots….

Also the 10000 multiplier is just to get a number easier to deal with for my mind.