happy thanksgiving to you too, bud, happy to hear y'all are doing well. miss the old online days

energy has moved to Cars And Bids and Bring A Trailer. I'm stewing on not owning this Mustang bringatrailer.com/listing/1973...

PL MAX

but enough about you and me

that's awful, so glad y'all are all safe

Agreed, I think I just wish the presentation was more clear in that it's a rough 2d approximation, and is ultimately representing nothing more than the difference in the observed movement angle and statcast's 2d spin axis, which is already included in all major public stuff models

Agreed. This dot product method seems useful as a quick approximation, though no new physics are being introduced and the conclusions drawn here will be no different than if using other methods that utilize statcast's spin_axis without the 3d spin vector.

He's assuming that the magnitude of movement along the spin_axis direction is due to magnus, and any deviation from that is nonmagnus movement

she's a serial overwriter, which some folks love to fawn over. all fluff, little substance, zero concision

He shared on twitter, and it's not using 3d spin vector but instead using statcast's induced horizontal and vertical movement without gravity projected onto statcast's 2d spin_axis. So [horz,vert] dot spin_axis_unit_vector

Got some fun ideas for what to use it for so stay tuned

The sim pitch locations account for pitch type, velo, movement, and arm angle, but it doesn't account for that specific pitcher's command or typical targets. So it basically assumes every one has the same command. Which is fine for these purposes, and can be tweaked manually.

simple_xrv is essentially PitchPro with no SSW, Arsenal, or Primary Fastball inputs. The sim goes pitch by pitch, picks a pitch type, applies that pitcher's average metrics for that type to that handedness, sims a pitch location, then plugs that into simple_xrv to sim results.