Indicator: drawn not on all bars

• 04/03/2020 at 5:14 PM #124529
  robocop

  I want my indicator to draw a solid line only in certain parts of the graph and nothing in others.
  I tried to return a zero value, but if I do, the line on the screen drops to zero and remains visible, while I want it to disappear completely.

  example:

  if close > open then a = close/open b = a/125 else a = 0 b= 40 endif return (a,b)

  1 2 3 4 5 6 7 8 9

  if close > open then a = close/open b = a/125 else a = 0 b= 40 endif   return (a,b)

   

  

  robocop

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  04/03/2020 at 5:19 PM #124531
  Vonasi

  robocop – Please always use the ‘Insert PRT Code’ button when posting code. I have tidied up your post for you.

   

  You will have to use DRAWSEGMENT if you want a line to only be shown at certain times.

  https://www.prorealcode.com/documentation/drawsegment/

  

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  04/03/2020 at 6:15 PM #124543
  robocop

  i can’t use drawsegment because i know my drawing is curved and it’s not a straight line.
  imagine having to join the maximum (or mininum) of some non-adjacent candles by means of arches, like the Mc Donald’s symbol.
  So I have to use “return” to return a series of values ​​that make up a curve (code is simplified to make idea).

  Can someone help me?

  Robocop

  PS: thak you to correct my post to insert sample code

  

  robocop

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  04/03/2020 at 6:48 PM #124553
  Vonasi

  You simply calculate your value at each candle and draw a segment from one candle to the next. Then you get exactly the same result as using RETURN but you can choose to draw a series of segments or not.

  

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  04/03/2020 at 7:21 PM #124556
  Vonasi

  Here you go – exactly what you asked for drawn using SEGMENT.

  defparam drawonlastbaronly = true size = averagetruerange[20] lasty=close drawsegment(barindex-14,lasty,barindex-13,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-13,lasty,barindex-12,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-12,lasty,barindex-11,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-11,lasty,barindex-10,lasty + size/2)coloured(238,154,0) lasty=lasty+size/2 drawsegment(barindex-10,lasty,barindex-9,lasty)coloured(238,154,0) drawsegment(barindex-9,lasty,barindex-8,lasty - size/2)coloured(238,154,0) lasty=lasty-size/2 drawsegment(barindex-8,lasty,barindex-7,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-7,lasty,barindex-6,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-6,lasty,barindex-5,lasty + size/2)coloured(238,154,0) lasty=lasty+size/2 drawsegment(barindex-5,lasty,barindex-4,lasty)coloured(238,154,0) drawsegment(barindex-4,lasty,barindex-3,lasty - size/2)coloured(238,154,0) lasty=lasty-size/2 drawsegment(barindex-3,lasty,barindex-2,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-2,lasty,barindex-1,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-1,lasty,barindex,lasty - size)coloured(238,154,0) lasty=lasty-size return

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

  defparam drawonlastbaronly = true   size = averagetruerange[20]   lasty=close drawsegment(barindex-14,lasty,barindex-13,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-13,lasty,barindex-12,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-12,lasty,barindex-11,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-11,lasty,barindex-10,lasty + size/2)coloured(238,154,0) lasty=lasty+size/2 drawsegment(barindex-10,lasty,barindex-9,lasty)coloured(238,154,0) drawsegment(barindex-9,lasty,barindex-8,lasty - size/2)coloured(238,154,0) lasty=lasty-size/2 drawsegment(barindex-8,lasty,barindex-7,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-7,lasty,barindex-6,lasty + size)coloured(238,154,0) lasty=lasty+size drawsegment(barindex-6,lasty,barindex-5,lasty + size/2)coloured(238,154,0) lasty=lasty+size/2 drawsegment(barindex-5,lasty,barindex-4,lasty)coloured(238,154,0) drawsegment(barindex-4,lasty,barindex-3,lasty - size/2)coloured(238,154,0) lasty=lasty-size/2 drawsegment(barindex-3,lasty,barindex-2,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-2,lasty,barindex-1,lasty - size)coloured(238,154,0) lasty=lasty-size drawsegment(barindex-1,lasty,barindex,lasty - size)coloured(238,154,0) lasty=lasty-size   return

   

  2 users thanked author for this post.

  robocop, Nicolas

  

  Vonasi

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  04/04/2020 at 2:14 PM #124615
  robocop

  Vonasi wrote:

  Here you go – exactly what you asked for drawn using SEGMENT.

  defparam drawonlastbaronly = true</p><br /><br /><br /> <p>size = averagetruerange[20]</p><br /><br /><br /> <p>lasty=close<br /><br /><br /><br /> drawsegment(barindex-14,lasty,barindex-13,lasty + size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size<br /><br /><br /><br /> drawsegment(barindex-13,lasty,barindex-12,lasty + size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size<br /><br /><br /><br /> drawsegment(barindex-12,lasty,barindex-11,lasty + size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size<br /><br /><br /><br /> drawsegment(barindex-11,lasty,barindex-10,lasty + size/2)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size/2<br /><br /><br /><br /> drawsegment(barindex-10,lasty,barindex-9,lasty)coloured(238,154,0)<br /><br /><br /><br /> drawsegment(barindex-9,lasty,barindex-8,lasty – size/2)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size/2<br /><br /><br /><br /> drawsegment(barindex-8,lasty,barindex-7,lasty – size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size<br /><br /><br /><br /> drawsegment(barindex-7,lasty,barindex-6,lasty + size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size<br /><br /><br /><br /> drawsegment(barindex-6,lasty,barindex-5,lasty + size/2)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty+size/2<br /><br /><br /><br /> drawsegment(barindex-5,lasty,barindex-4,lasty)coloured(238,154,0)<br /><br /><br /><br /> drawsegment(barindex-4,lasty,barindex-3,lasty – size/2)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size/2<br /><br /><br /><br /> drawsegment(barindex-3,lasty,barindex-2,lasty – size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size<br /><br /><br /><br /> drawsegment(barindex-2,lasty,barindex-1,lasty – size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size<br /><br /><br /><br /> drawsegment(barindex-1,lasty,barindex,lasty – size)coloured(238,154,0)<br /><br /><br /><br /> lasty=lasty-size</p><br /><br /><br /> <p>return

  defparam drawonlastbaronly =

  Thak you very much. You are right.

  And, i don’t want abuse about your know-how…, two question

  a)

  defparam drawonlastbaronly = true

  1	defparam drawonlastbaronly = true

  force platform to call indicator only on the very last bar, and i can plot any point ‘in the past’?

  b)  my indicator will run in daily or weekly timeframe,  can i read timestamp (something like yyyymmddhhmmss) for maximum and mininum of a candle (day/week depending timeframe)?

   

  

  robocop

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  04/04/2020 at 6:15 PM #124629
  Vonasi

  DRAWONLASTBARONLY does exactly that. It only draws whatever your code is trying to draw once at the last bar on the chart. For example if it was not in your code and you drew a line across the chart at the close price then you would have thousands of lines on your chart but with DRAWONLASTBARONLY = TRUE you only have one at the latest closing value.

  Not sure that I fully understand your second question. You can store anything you like in a variable such as TIME, OPENMINUTE, DAYOFWEEK etc. If however you want to draw something to when that event happened then you have to store the BARINDEX when it happened.

  There are lots of info and coding examples to be found here that might be generally helpful for you:

  https://www.prorealcode.com/prorealtime-documentation/

   

  If you are using v11 then there is an instruction DATETOBARINDEX that might do what you want. I know there was a slight bug in the first release of it which I’m not sure has been fixed yet or not.

  https://www.prorealcode.com/documentation/datetobarindex/

   

   

  

  Vonasi

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  04/04/2020 at 8:58 PM #124650
  robocop

  I am in DAILY Timeframe. Whith “High” i can have then High of the current bar. With “low” i can have the low of the current bar.

  Is it possible to know the time when the maximum was recorded? Is it possible to know the time when the minimum was recorded?

  

  robocop

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  04/04/2020 at 9:46 PM #124653
  Vonasi

  If I understand what you are asking correctly then in an indicator the answer is no as MTF is not yet available for indicators. In a strategy if you use MTF then yes but then you can’t launch your strategy on the daily time frame.

  

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  04/04/2020 at 10:02 PM #124654
  robocop

  Vonasi wrote:

  If I understand what you are asking correctly then in an indicator the answer is no as MTF is not yet available for indicators. In a strategy if you use MTF then yes but then you can’t launch your strategy on the daily time frame.

  Yes, i am in an indicator. So, I have to wait until MultiTimeFrame will be available for indicators, right?

  

  robocop

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  04/04/2020 at 10:46 PM #124656
  robocop

  using DRAWSEGMENT instead of RETUN values, i don’t find a way to control the style of the line, for example dotted line or bold, i think i can control only colour.

   

  

  robocop

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  04/04/2020 at 10:47 PM #124657
  Vonasi

  Yes. Even then we don’t know how it will work. Perhaps we have to do the same as on strategies and run our indicator on the fastest time frame.

  At the moment from what I have heard all update deadlines are unknown due to the staff at PRT working from home. Obviously in this current  situation releasing major updates is not such a good idea. I guess we all just have to be a little patient right now.

  

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  04/04/2020 at 10:48 PM #124658
  robertogozzi

  Yes, only colour.

  With v11 you’ll be able to control other settings (like RETURN).

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  robocop

  

  robertogozzi

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  04/04/2020 at 10:53 PM #124659
  Vonasi

  Roberto answered your post while I was editing it. Please don’t quote posts that contain a large amount of code as it makes a really unreadable mess of the forums. If you want to quote a statement or sentence in a post so that people know what you are referring to then just highlight it and then click on quote.

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  Vonasi

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  04/04/2020 at 10:58 PM #124661
  robocop

  robertogozzi wrote:

  Yes, only colour.

  With v11 you’ll be able to control other settings (like RETURN).

  Hi RobertoGozzi, but now i run V11.1-1.8.0_202 and i don’t find any wy to control style (like RETURN).

  

  robocop

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