looping problem

• 02/06/2019 at 1:54 AM #90571
  chook

  I am a newbie, and can’t get the attached code to work.

  It just yield zero line.

  It is my attempt to translate code from amibroker.

  Please help.

  //plotting rolling weekly data on daily chart

  Xlength = 5 Length = 18 Synthetic = Xlength * Length Value1 = lowest[synthetic](Low) Value2 = highest[synthetic](High) - Value1 If Value2 > 0 then XTK = (Close - Value1)/Value2 * 100.0 else XTK = 0 endif for i = 0 to BarIndex do if i >= Xlength then XTDF = XTDF[i-Xlength] + 0.5 *( XTK[i] - XTDF[i-Xlength]) else XTDF = 0 endif next Return XTDF coloured(100,100,0) as "XTDF"

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

  Xlength = 5 Length = 18 Synthetic = Xlength * Length Value1 = lowest[synthetic](Low) Value2 = highest[synthetic](High) - Value1   If Value2 > 0 then XTK = (Close - Value1)/Value2 * 100.0 else XTK = 0 endif   for i = 0 to BarIndex do if i >= Xlength then XTDF = XTDF[i-Xlength] + 0.5 *( XTK[i] - XTDF[i-Xlength]) else XTDF = 0 endif next   Return XTDF coloured(100,100,0) as "XTDF"

   

  

  chook

  Participant

  Topics: 1

  Replies: 1

  Been thanked: 0 times
  02/06/2019 at 9:57 AM #90584
  robertogozzi

  I didn’t check the calculations, yet.

  Still I can see you are using very time consuming loops.

  BARINDEX will soon exceed a value of several thousands units… slowing (if not freezing at all) your system quite much. I can’t figure out why you weren’t reported an error message by the system!

  

  robertogozzi

  Moderator

  Topics: 69

  Replies: 17662

  Been thanked: 4368 times
  02/06/2019 at 1:14 PM #90606
  robertogozzi

  The result is always ZERO because the initial value of XTDF is 0 and you ALWAYS end up there because your loop backwards will always end up catching the value tied to variable i which will always go back i times to when the code started.

  1 user thanked author for this post.

  chook

  

  robertogozzi

  Moderator

  Topics: 69

  Replies: 17662

  Been thanked: 4368 times
  02/08/2019 at 2:40 AM #90807
  chook

  Thank you for your help

  

  chook

  Participant

  Topics: 1

  Replies: 1

  Been thanked: 0 times
• Author
  Posts