Optimization oddities with uneven numbers

• 03/08/2023 at 7:44 PM #211148
  paisantrader

  I have noticed it for a while, but never got around to figuring out why or when it happens. Now I finally have.

  When you run an optimization let’s say between 1 and 1.2, the values it will use will be 1.0, 1.1 and finally 1.2.

  When you run an optimization between 1 and 1.3, the values it will use will be 1.0, 1.1, 1.2, 1.3 and then finally 1.4.

  So, it’s when the end value is an uneven decimal. Anyone else with this problem and why does it happen?

  

  paisantrader

  Participant

  Topics: 1

  Replies: 57

  Been thanked: 25 times
  03/09/2023 at 9:06 AM #211171
  Nicolas

  Good spot, I can replicate and I don’t think that’s intentional 🙂 I’m reporting it, thanks a lot for your post.

  

  Nicolas

  Keymaster

  Topics: 81

  Replies: 20828

  Been thanked: 4742 times
  03/09/2023 at 9:10 AM #211172
  paisantrader

  Nicolas wrote:

  Good spot, I can replicate and I don’t think that’s intentional 🙂 I’m reporting it, thanks a lot for your post.

  Much appreciated. Thank you.

  

  paisantrader

  Participant

  Topics: 1

  Replies: 57

  Been thanked: 25 times
  03/10/2023 at 5:16 PM #211322
  paisantrader

  A followup.

  It doesn’t seem to be only uneven numbers, it’s something else.

  Just did 0.2 – 0.8 with steps of 0.2. It finished at 1.0.

  Too make it more odd. If you do 0.2 – 0.6, it finishes at 0.6.

  1 user thanked author for this post.

  GraHal

  

  paisantrader

  Participant

  Topics: 1

  Replies: 57

  Been thanked: 25 times
  03/10/2023 at 5:41 PM #211324
  phoentzs

  I have observed this oddity for a long time, but never examined it closely. Something like this occurs especially at 0.0… steps.

  

  phoentzs

  Participant

  Topics: 84

  Replies: 915

  Been thanked: 169 times
  03/11/2023 at 11:28 AM #211362
  PeterSt

  Yes, I have seen it often too, but deemed it unimportant. If you ask me, I think it can just overshoot (one step). As far as I can recollect, indeed it happens with fractions only.

  

  PeterSt

  Participant

  Topics: 71

  Replies: 2292

  Been thanked: 695 times
• Author
  Posts