Ceiling line not working with minimum

• 02/24/2021 at 11:36 PM #162558
  gfx

  Hi,

  Let’s take an ema and compare current value with its previous value.

  As long as it goes down, slode negative, we draw a ceiling on top of  price with highest high of last 20 bars.

   

  ema = Average[20](close) IF ema < ema[1] THEN ceils = Highest[20](high) ELSE ceils = ceils[1] ENDIF Return ceils

  1 2 3 4 5 6 7 8 9

  ema = Average[20](close)   IF ema < ema[1] THEN ceils = Highest[20](high) ELSE ceils = ceils[1] ENDIF   Return ceils

  Result in attached file.

  It looks great until the slope turns positive for a few candles, and then negative again, whereas during these few candles the highhest high over the 20 last high has increased.

  The orange line turns blue. But I don’t want the ceiling value to increase.

  So I decide, when the slope is negative, to draw as ceiling the minimum value beetween  the previous ceilling and the highest high.

  ema = Average[20](close) IF ema < ema[1] THEN ceils = Min(ceils[1], Highest[20](high)) ELSE ceils = ceils[1] ENDIF Return ceils

  1 2 3 4 5 6 7 8 9

  ema = Average[20](close)   IF ema < ema[1] THEN ceils = Min(ceils[1], Highest[20](high)) ELSE ceils = ceils[1] ENDIF   Return ceils

  When I validate the indicator, no ceiling line is drawn on the chart.

  I don’t undestrand why …

  I tried to initialise with a high value, and/or use a temporary variable to calculate the min …

  ema = Average[20](close) once ceils = 1000000000000000 IF ema < ema[1] THEN k = Min(ceils[1], Highest[20](high)) ceils = k ELSE ceils = ceils[1] ENDIF Return ceils

  1 2 3 4 5 6 7 8 9 10 11 12

  ema = Average[20](close)   once ceils = 1000000000000000   IF ema < ema[1] THEN k = Min(ceils[1], Highest[20](high)) ceils = k ELSE ceils = ceils[1] ENDIF   Return ceils

  Ceiling line still not drawn on chart 🙂

  Any idea why ?

  Thks.

  gfx

  

  gfx

  Participant

  Topics: 25

  Replies: 65

  Been thanked: 5 times
  02/25/2021 at 12:22 AM #162570
  Vonasi

  gfx – Once again this is an indicator coding question and not a platform issue. That is the second one tonight posted in the wrong place. Please try to understand which forums are for which subjects. I moved your topic….again.

  Post your topic in the correct forum:
  _ ProRealTime Platform Support: only platform related issues.
  _ ProOrder: only strategy topics.
  _ ProBuilder: only indicator topics.
  _ ProScreener: only screener topics
  _ General Discussion: any other topics.
  _ Welcome New Members: for new forum members to introduce themselves.

  

  Vonasi

  Moderator

  Topics: 192

  Replies: 5088

  Been thanked: 1811 times
  02/25/2021 at 12:27 AM #162571
  Vonasi

  Have you tried enclosing your code in:

  if barindex >= 20 then .... endif

  1 2 3

  if barindex >= 20 then .... endif

   

  

  Vonasi

  Moderator

  Topics: 192

  Replies: 5088

  Been thanked: 1811 times
  02/25/2021 at 12:29 AM #162572
  robertogozzi

  In the first two examples, lines 5 and 6 can be removed.

  Example 1 works fine. Please post instrument, TF, date and time of the candle  where it plots incorrectly.

  If you replace your second example with this one, it’lll work, but due to MIN() the indicator is quite BELOW the current price so you’ll have to shrink the chart slightly (and use 10K units):

  IF BarIndex > 20 then ema = Average[20](close) once ceils = Highest[20](high) IF ema < ema[1] THEN ceils = Min(ceils, Highest[20](high)) ENDIF endif Return ceils

  1 2 3 4 5 6 7 8

  IF BarIndex > 20 then ema = Average[20](close) once ceils = Highest[20](high) IF ema < ema[1] THEN ceils = Min(ceils, Highest[20](high)) ENDIF endif Return ceils

  Third example is like the second one:

  if barindex > 20 then ema = Average[20](close) once ceils = Highest[20](high)//1000000000000000 IF ema < ema[1] THEN k = Min(ceils, Highest[20](high)) ceils = k endif endif Return ceils

  1 2 3 4 5 6 7 8 9 10 11

  if barindex > 20 then ema = Average[20](close) once ceils = Highest[20](high)//1000000000000000 IF ema < ema[1] THEN k = Min(ceils, Highest[20](high)) ceils = k endif endif Return ceils

   

   

   

  

  robertogozzi

  Moderator

  Topics: 69

  Replies: 16517

  Been thanked: 3663 times
• Author
  Posts