DRAWSEGMENT assistance

• 07/09/2017 at 8:47 PM #40181
  IG_CFD_Trader

  Thank you Nicolas. Your assistance is much appreciated.

  

  IG_CFD_Trader

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  07/10/2017 at 7:59 AM #40190
  IG_CFD_Trader

  Code looks good thank you. Now the last challenge is how to get it to draw segment lines only on the most current HiPoint and HiPoint[1] and LoPoint and LoPoint[1] and ignore all the rest of the historical Hipoints and Lopoints.

  I tried introducing at the begining of the code:

  DEFPARAM DRAWONLASTBARONLY = true

  DEFPARAM CALCULATEONLASTBARS = 200

  But this seems to work on only one of the points either Lopoint or Hipoint pending which one happens to be the most current on chart but did not draw both.

  Any ideas?

   

  

  IG_CFD_Trader

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  07/10/2017 at 8:38 AM #40194
  Nicolas

  That’s normal because we can’t never know in advance how much bars is necessary to loop in the past to find the last 2 needed points to draw a new trend line ..

  So I add the “lookback” variable as an external one that can change to find the suitable one for each instrument/timeframe. Example attached on DAX 5 minutes, a lookback of 500 bars was needed in order to find the first high point above the current one!

  DEFPARAM DRAWONLASTBARONLY = true strength=20 //lookback=100//strength*5 TH=max(high,close[1]) TL=min(low,close[1]) r=0 e=1 r=strength if high[r]>highest[r](TH) then e=1 while high[r]=high[r+e] do e=e+1 wend if high[r]>highest[r](TH[r+e]) then HiPoint = high[r] HiBar = barindex[r] endif Endif if low[r]<lowest[r](TL) then e=1 while low[r]=low[r+e] do e=e+1 wend if low[r]<lowest[r](TL[r+e]) then LoPoint = low[r] LoBar = barindex[r] endif endif for i = 1 to lookback do if hibar[i]<>hibar then if hipoint[i]>hipoint then drawsegment(HiBar[i],HiPoint[i],HiBar,HiPoint) coloured(200,0,0) break endif endif next for i = 1 to lookback do if lobar[i]<>lobar then if lopoint[i]<lopoint then drawsegment(loBar[i],loPoint[i],loBar,loPoint) coloured(0,200,0) break endif endif next return

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  DEFPARAM DRAWONLASTBARONLY = true   strength=20 //lookback=100//strength*5   TH=max(high,close[1]) TL=min(low,close[1]) r=0 e=1   r=strength   if high[r]>highest[r](TH) then e=1 while high[r]=high[r+e] do e=e+1 wend if high[r]>highest[r](TH[r+e]) then HiPoint = high[r] HiBar = barindex[r]     endif Endif   if low[r]<lowest[r](TL) then e=1 while low[r]=low[r+e] do e=e+1 wend if low[r]<lowest[r](TL[r+e]) then LoPoint = low[r] LoBar = barindex[r]     endif endif   for i = 1 to lookback do if hibar[i]<>hibar then if hipoint[i]>hipoint then drawsegment(HiBar[i],HiPoint[i],HiBar,HiPoint) coloured(200,0,0) break endif endif next   for i = 1 to lookback do if lobar[i]<>lobar then if lopoint[i]<lopoint then drawsegment(loBar[i],loPoint[i],loBar,loPoint) coloured(0,200,0) break endif endif next   return

   

  

  Nicolas

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  05/07/2021 at 5:00 AM #168996
  IG_CFD_Trader

  Hi Nicolas,

  For example suppose I have an indicator that is returning a number on the current bar of the chart (let’s say that number for argument sake is +100 which is obviously >0).

  The number +100 is continually changing increasing and decreasing depending on indicator calculation.

  Now if the current number is +100 and the next (new) number is +99 then the number (although is still >0) has decreased by -1.

  Is it possible to show +99 in red because it has decreased and as long as it is decreasing keep showing in red and when it increases again, show it in green.

  I guess you need to be able to calculate difference between a number and itself in the same bar and show green if >0 and red if <0. Unless you have another trick to do it.

  Regards,

  Walid

  

  IG_CFD_Trader

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  05/07/2021 at 8:27 AM #169005
  Nicolas

  I’m not sure your question is related to this topic, but anyway..

  In order to compare a value between now and its previous state, during the same bar, you have to use a variable in array, which is not reset on each tick received in a bar:

  example

  defparam drawonlastbaronly=true a = rsi[14] if a > $var[barindex] then //value now is more than before $var[barindex]=a //save RSI value r=0 //no red g=255 //but green! elsif a < $var[barindex] then //value now is less than before $var[barindex]=a //save RSI value r=255 //red g=0 //no green! endif drawtext("#a#",barindex,50,dialog,bold,20) coloured(r,g,0) //text value in desired color return a

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  defparam drawonlastbaronly=true a = rsi[14]   if a > $var[barindex] then //value now is more than before $var[barindex]=a //save RSI value r=0 //no red g=255 //but green! elsif a < $var[barindex] then //value now is less than before $var[barindex]=a //save RSI value r=255 //red g=0 //no green! endif   drawtext("#a#",barindex,50,dialog,bold,20) coloured(r,g,0) //text value in desired color   return a

   

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  Nicolas

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  05/07/2021 at 2:05 PM #169042
  IG_CFD_Trader

  Thank you Nicolas. That’s great, it worked.

  Now the challenge is how do I compute the change between a and $var[barindex] (i.e. the change between the stored “a” value and the new “a” value in the same bar.

  For example to do it between the current bar and the previous bar, I would use change=(a-a[1])/a[1])*100 to get the %change.

  How do I do same but in the current bar.

  

  IG_CFD_Trader

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  05/07/2021 at 2:26 PM #169045
  Nicolas

  $var[barindex] is the last value you have stored, so basically your formula is:

  ((a-$var[barindex])/$var[barindex])*100

  defparam drawonlastbaronly=true a = rsi[14] change = round(((a-$var[barindex])/$var[barindex])*100,2) if a > $var[barindex] then //value now is more than before $var[barindex]=a //save RSI value r=0 //no red g=255 //but green! elsif a < $var[barindex] then //value now is less than before $var[barindex]=a //save RSI value r=255 //red g=0 //no green! endif drawtext("#a# #change#%",barindex,50,dialog,bold,20) coloured(r,g,0) //text value in desired color return a

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  defparam drawonlastbaronly=true a = rsi[14]   change = round(((a-$var[barindex])/$var[barindex])*100,2)   if a > $var[barindex] then //value now is more than before $var[barindex]=a //save RSI value r=0 //no red g=255 //but green! elsif a < $var[barindex] then //value now is less than before $var[barindex]=a //save RSI value r=255 //red g=0 //no green! endif   drawtext("#a# #change#%",barindex,50,dialog,bold,20) coloured(r,g,0) //text value in desired color   return a

   

  

  Nicolas

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  05/08/2021 at 1:46 AM #169074
  IG_CFD_Trader

  Thank you Nicolas. Much appreciated mate.

  1 – in your email reply (plz see snapshot atatched), the expression ((a-$var[barindex])/$var[barindex])*100 seems to be included in the code and appears ABOVE the expression defparam drawonlastbaronly=true. Is this correct? In the web portal reply section above, the expression ((a-$var[barindex])/$var[barindex])*100 seems to be not included in the code. Is the expression required? and if so, where? above defparam or below it or expression not required at all?

  2 – In both your email code and code in this portal above, you have Return VWAP. Is this a typo or VWAP is required after Return?

  

  IG_CFD_Trader

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  05/08/2021 at 5:15 PM #169130
  Nicolas

  The above code, contained in the code window is the one you need. There is no typo.

  

  Nicolas

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  05/10/2021 at 12:45 AM #169216
  IG_CFD_Trader

  Thank you Nicolas.

  By the way, how do I DRAWTEXT to the RIGHT of the current bar? Say I have 3 results which I want to drawtext the values to the right of the bar (1 result below the other) starting from (to the right of High) and listing them down in a row

   

  

  IG_CFD_Trader

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  05/10/2021 at 2:30 PM #169294
  Nicolas

  You can adjust the X coordinates in the future with BARINDEX+3 for example (3 is the bars quantity in the future)

  Same goes for Y axis in price, for example:

  close + 10 * pointsize //10 points above current close

  1	close + 10 * pointsize //10 points above current close

   

  

  Nicolas

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  05/11/2021 at 12:27 PM #169407
  IG_CFD_Trader

  Tnx mate.

  If my indicator as a result of division of 2 numbers return a decimal number say 9.123 (3 decimals), is there a way I can make it return 6 decimals?

  

  IG_CFD_Trader

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  05/14/2021 at 6:12 AM #169636
  IG_CFD_Trader

  Hi Nicolas,

  The below code resets the VWAP at the start of every trading day (say at 00:00 midnight).

  d = max(1, intradaybarindex)
  VWAP = SUMMATION[d](volume*typicalprice)/SUMMATION[d](volume)

  How do I make it reset every 2 trading days?

  

  IG_CFD_Trader

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