This appears to work about 90% of time, not sure what affecting other 10%, needs some thinking time.

I tried this on 10-30sec to see it tracking, seems to work fine but then deviates till next bar starts, or doesn’t track for a few bars.

Not sure whats happening, maybe fresh eyes with see/think of something.

Give it a try and let me know what you think, and btw what timeframe (s) are you working to.

regards

// NOTE:  to set 
// dynamicVariable  'lookback'  'integer' default value  '300'

defparam drawonlastbaronly = true
 
lbk = max(min(lookback,barindex),1)     // entry guard limiter

if islastbarupdate then           // wait till last bar
 
chigh = high // current high
 
//once xibar=0 // zero current bar
//once xdiff=0  // zero no difference, since current bar

for i = 1 to lbk do               // limited loopback scope
 
if high[i] > chigh then      // test for a higher high than current high

diff = high[i] - chigh
ibar = i

if i = 1 then            // used 1st previous value as default
xdiff = diff
xibar = ibar

 
elsif diff < xdiff then  // test futher values for smaller diffence
xdiff = diff
xibar = i
endif

xb=xibar
xd=xdiff
xh = high[xb]
hi = chigh
 endif 
next            // 1 to lookback

endif              // islastbarupdate
 
drawarrowdown(barindex,xh+5) coloured("darkSeaGreen") // arrow over scope start start
drawarrowdown(barindex[xb],xh+5) coloured("tomato") //  arrow over target in scope
drawpoint(barindex[xb],xh,2) coloured("tomato") //  target point highlighted in scope
drawpoint(barindex,hi,2) coloured("darkSeaGreen") // arrow over scope start start

drawtext("#xb#",barindex[xb],xh+10) // look back value of target

drawsegment(barindex[lbk],hi,barindex,hi)coloured(0,255,255,85)style(dottedline,1) // lookback scope line
drawsegment(barindex[xb]-1,hi,barindex+2,hi)coloured("mediumorchid")style(dottedline,2) // target higher high line within  scope

drawtext("H #xh# lookback for #xb# bars from current H #hi# difference #xd# higher",0,-40)Anchor(top) // details!

return

hi… Rob

 I added variable J to count the very first occurrence, as it can’t be assumed it’s when I=1:

It took me a while to grasp what you comments meant. Just for other’s following at home!

When the loop starts, it doesn’t process anything until it looks back apon a high higher than the current high.

Now if that just happens to be the 1st previous bar , when i = 1, then the calculated ‘diff’ value along with it index location would be stored in the ‘If’ statements ‘xdiff’ and ‘xibar’ as the default/first found value which is used later for comparisons.

These values, but specifically, ‘xdiff’ is used to determine if following found ‘diff’ values are smaller than it. If it is, it replaces it, if its not , it lives through other  iterations of  the loop till it is, or the loop reaches the end and terminates.

However, when i=1 and not a higher value, then ‘no’ code in the loop is executed, that correct. But when a later, the first, higher high is found and i > 1 then this new set of values are not stored in the ‘if’ statements ‘xdiff’ and ‘xibar’ lines because the condition is false so not updating ‘xdiff’ for ‘this’ first time.

This creates a knock on affect because when it compares this first diff value, it’s comparing it to an invalid/previous, but wrong ‘xdiff’ value and also not being the first ‘xdiff’. This means that not only is it being compared to a wrong value, also any other finds are being compared to a wrong value and its not until a value registers as smaller higher high to this wrong value, that normal service is resumed, If this doesn’t correct itself before it draws, it ripples through to drawing elements, randomly not moving or making wild jumps. Just as i saw.

Thanks for your time Roberto, that’s great, learned a lot from trying to understand my own code from you comments.

Best Regards.