Announcement

Collapse

TGC Tour - Congratulations!

Congrats to @Wiscogolfnut (NET) and @Marc Andre (GROSS) winning the TGC 2019 SUMMER TOUR - 3M Open !

Join this weeks TGC 2019 SUMMER TOUR - John Deere Classic with 2 rounds at The Merion East Ardmore, PA (ProTee - Middle) : https://golfsimulatorforum.com/forum...-deere-classic
See more
See less

Advanced Analytics for SkyTrak data - would appreciate feedback

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Advanced Analytics for SkyTrak data - would appreciate feedback

    I built this to have a better view of all my SkyTrak shot data:

    https://gunghogolf.com/ron/analytics

    If you’d like to try it out with your own data, and you run SkyTrak on a PC, sign up at https://gunghogolf.com/signup and follow the Analytics link in the menu. Full instructions will be there. You’ll be uploading a database file from your PC to my server. (Your analytics page will be private, unlike mine which I’ve opened up for demo purposes.)

    Would love feedback! Here’s a screenshot:

    Click image for larger version

Name:	6DE65FCA-EC8C-4F74-9801-96B320CCA045.jpeg
Views:	400
Size:	116.4 KB
ID:	213215


  • #2
    Can you explain how you're getting club data? AoA, CHS, face and path??

    Comment


    • GungHoGolf
      GungHoGolf commented
      Editing a comment
      SkyTrak calculates those numbers based on its measured data, assuming center clubface strike. The club data is in your database, but not exposed in the current version of the SkyTrak app.

    • JackedUpSwing
      JackedUpSwing commented
      Editing a comment
      I don't understand how it could calculate dynamic loft or angle of attack based solely on ball measurements.

    • GungHoGolf
      GungHoGolf commented
      Editing a comment
      The models do a respectable job for path, face to path, AoA, and dynamic loft based on launch angles and spin. For example, given a certain horizontal launch angle and side spin and assuming center face contact (no gear effect) there is only one swing path and face-to-path that will produce those numbers. And it’s the same idea in the vertical plane for AoA and dynamic loft.

  • #3
    That is pretty impressive! Very cool way to look at each club in your bag.

    Comment


    • #4
      The models do a respectable job for path, face to path, AoA, and dynamic loft based on launch angles and spin. For example, given a certain horizontal launch angle and side spin and assuming center face contact (no gear effect) there is only one swing path and face-to-path that will produce those numbers. And it’s the same idea in the vertical plane for AoA and dynamic loft.
      Very interesting. What if path and face zero each other out? There must be many combinations of face and path that produce a given HLA and spin axis while still hitting center face? For example path 7 degrees in to out, face 1 degree closed.

      Very nice representation of the data. Perfect for club fitting, gapping etc.
      Last edited by Morini; 07-11-2019, 07:16 AM.

      Comment


      • #5
        Originally posted by Morini View Post
        Very interesting. What if path and face zero each other out? There must be many combinations of face and path that produce a given HLA and spin axis while still hitting center face? For example path 7 degrees in to out, face 1 degree closed.
        No, that’s the key: for a given HLA and sidespin rpm (spin axis factored by total spin) number, there is theoretically only one combination of face and path that will produce it (again assuming no gear effect).

        Originally posted by Morini View Post
        Very nice representation of the data. Perfect for club fitting, gapping etc.
        Thank you!

        Comment


        • #6
          This is really cool! Thanks for putting it together, I just took a brief look but there is a lot of interesting data there which could be very useful. Looking forward to exploring more of it later.

          Comment


          • GungHoGolf
            GungHoGolf commented
            Editing a comment
            Thank you! Appreciate the feedback.

        • #7
          No, that’s the key: for a given HLA and sidespin rpm (spin axis factored by total spin) number, there is theoretically only one combination of face and path that will produce it (again assuming no gear effect).
          I'm not sure I follow. My example (+7 degrees path, -1 degree face) will read zero spin axis, zero side spin, and zero HLA, just the same as zero path, zero face would. Thus theoretically, there are infinite combinations that will produce a given HLA/side spin. Or am I missing something?

          Anyhow, very impressed with this effort. Very professional.

          Last edited by Morini; 07-11-2019, 11:20 PM.

          Comment


          • GungHoGolf
            GungHoGolf commented
            Editing a comment
            Perhaps we're mixing terminology. When talking about face, I'm talking about face-to-path, not face-to-target - just so we clear that up. SkyTrak's face number is the same - relative to path. And SkyTrak's path is relative to what it thinks the target line is.

            But on to your example. Any time the face angle is different from the path angle, there will be side spin. So +7 path (way inside out) with the face off -1 from that (so face is at +6 to target line) is going to result in a big push and slight draw, with some draw side spin but not enough to get it back to the target. +7 path and -3.5 face would be a big push draw that usually would make it back to the target. Zero path and zero face would result in a perfectly straight shot with no side spin, starting and staying on the target line.

            Besides zero path and zero face-to-path, there is no other combination of path and face that will make a ball start and go perfectly straight to the target with zero side spin. Same as there is no other combination of path and face that would produce your +7 / -1 example of a big push with slight draw back (with exactly the same HLA and side spin numbers).

          • GungHoGolf
            GungHoGolf commented
            Editing a comment
            If your example of +7 path and -1 face was actually referring to a face -1 of the target line, that would start about straight but would have significant draw side spin and curve far left of the target. Either way, why do you think the side spin would be zero if the path and face differ?

        • #8
          That makes sense. The shot would start out straight, but would need off centre strike to cancel out side spin, and your assumption was centre strike, so you are absolutely right, only one combination.

          Comment

          Working...
          X