Trackman provides a wide range of data parameters for both Full Swing and Putting. Below, you’ll find clear definitions of each parameter to help you better understand and interpret your data. You can click each parameter and you will be directed to a separate article, elaborating that parameter.

Tee To Green Data Parameters

Club Parameters

• Attack Angle
  • The up or down movement of the club head's geometric center at the time of maximum compression.
• Club Path
  • The in-to-out or out-to-in movement of the club head's geometric center at the time of maximum compression.
• Club Speed
  • The linear speed of the club head's geometric center just prior to first touch with the golf ball.
• Dynamic Lie
  • The angle of the lower portion of the shaft relative to the waterline at impact
• Dynamic Loft
  • The vertical angle of the club face at the center-point of contact between the club and ball at the time of maximum compression.
• Face Angle
  • The direction the club face is pointing at the center-point of contact between the club and ball at the time of maximum compression.
• Face To Path
  • The angle difference between the reported face angle and club path
• Impact Height
  • The vertical impact location distance relative to the center of the face
• Impact Offset
  • The horizontal impact location distance relative to the center of the face
• Low Point Distance
  • Distance from the club head's geometric center to the lowest point on the swing arc at the time of maximum compression.
• Low Point Height
  • The relative vertical distance of the club head position at the time of maximum compression to where the swing would bottom out if there was no interaction between the ball or the ground.
• Low Point Side
  • The relative horizontal distance of the club head measured perpendicular to the target line of the club head position at the time of maximum compression to where the swing would bottom out if there was no interaction between the ball or the ground
• Spin Loft
  • The angle between the direction of the club head's movement and the club face's orientation at the time of maximum compression.
• Swing Direction
  • The angle between the base of the plane created by the club head's geometric center movement and the target line.
• Swing Plane
  • The vertical angle between the plane created by the club head's geometric center movement and the horizon.
• Swing Radius
  • Radius of the swing arc – measured at knee height until just before impact, i.e. the club trajectory from 8pm until impact and then fitting a circle to it and measuring the radius. 

Launch Parameters

• Ball Speed
  • The speed of the golf ball's center of gravity immediately after separation from the club face.
• Ball Speed Difference
  • Ball Speed Difference is the variation between the measured ball speed and the maximum possible ball speed for the shot.
• D Plane Tilt 
  • The tilt of the D Plane relative to the plumb line.
• Launch Angle
  • The vertical angle the golf ball takes off at relative to the horizon and measured immediately after separation from the club face.
• Launch Direction
  • The horizontal angle the golf ball takes off at relative to the target line and measured immediately after separation from the club face.
• Smash Factor
  • The ratio between the measured ball speed and measured club speed.
• Smash Index
  • The ratio of the measured Smash Factor (Ball Speed / Club Speed) to the maximum Smash Factor.
• Spin Index
  • The ratio between the measured Spin Rate and the Expected Spin Rate.
• Spin Axis
  • The angle relative to the horizon of the imaginary line that the golf ball rotates around and is measured after separation from the club face.
• Spin Rate
  • The rate of rotation of the golf ball about the imaginary line the golf ball rotates around measured immediately after separation from the club face.
• Spin Rate Difference
  • Spin Rate Difference is the deviation between the measured spin rate and the expected spin rate for the shot.

Flight Parameters

• Carry
  • The straight-line distance between where the golf ball was launched from and where it crosses a point that has the same elevation.
• Carry Side
  • The perpendicular distance between the target line and where the trajectory crosses a point that has the same elevation as where the golf ball was launched.
• Curve
  • The horizontal side movement perpendicular from the launch direction to carry side
• Hang Time
  • Time in seconds to carry flat.
• Height (Apex) 
  • The maximum height or apex of the trajectory measured relative to the elevation at which the golf ball was launched.
• Landing Angle
  • The angle the golf ball lands at relative to the horizon and at a point that has the same elevation as where it was launched.
• Last Data
  • Last measurement of ball flight.
• Total
  • The straight-line distance between where the golf ball was launched from and its calculated resting position.
• Total Side
  • The perpendicular distance between the target line and the golf ball's calculated resting position.

Putting Data Parameters

Club Parameters

• Attack Angle
  • The up or down movement of the club head's geometric center at the time of impact
• Backswing Time
  • The time the club head is traveling away from the ball
• Club Path
  • The in-to-out or out-to-in movement of the club head's geometric center at the time of impact
• Club Speed
  • The speed the club head is traveling immediately prior to impact
• Dynamic Lie
  • The angle of the shaft relative to the waterline at impact
• Dynamic Loft
  • The vertical angle of the club face at the center-point of contact between the club and ball at the time of maximum compression.
• Face Angle
  • The direction the club face is pointing at the center-point of contact between the club and ball at the time of impact
• Face to Path
  • The angle difference between the reported face angle and club path
• Forward Swing Time
  • The time the club head is traveling towards the ball until impact
• Impact Height
  • The vertical impact location distance relative to the center of the face.
• Impact Offset
  • The horizontal impact location distance relative to the center of the face.
• Stroke Length
  • The distance the club head is pulled back from the ball in the backswing
• Tempo
  • The Backswing time divided by the Forward swing time

Launch Parameters

• Ball Speed
  • Initial ball speed immediately after separation from the putter face
• Bounces
  • The number of bounces on the ground during the skid phase
• Launch Angle
  • The vertical angle the golf ball takes off at relative to the horizon and measured immediately after separation from the club face
• Launch Direction
  • The angle the ball starts right or left in relation to the target line
• Skid Distance
  • The distance the ball is bouncing/sliding until it starts to roll
• Smash Factor
  • The ratio between the measured Ball Speed and Club Speed.

Roll Parameters

• Distance
  • The total distance in a straight line from the starting point
• Entry Speed Distance
  • The straight-line distance between where the golf ball was launched from and the point of entry speed (1.68 mph)
• Roll Speed
  • Speed at the point where the ball starts to roll
• Roll %
  • The amount of roll on the total putt distance
• Side
  • Perpendicular distance between the target line and where the trajectory crosses the point of entry speed.
• Speed Drop
  • The percentage drop in speed from Ball Speed to Roll Speed
• Total Side
  • The total side distance from the target at the time the ball reaches entry speed
• Tracked Distance
  • The straight-line distance between where the golf ball was launched from and to the last tracking point.

Green Parameters

• Break
  • The total side movement from the ball’s launch direction, at the time the ball reaches entry speed
• Effective Stimp
  • The speed of the individual putt, based on the average roll deceleration
• Elevation
  • The height difference from the ball's starting position to the point of entry speed
• Flat Stimp
  • The calculation of green’s general speed, based on the average roll deceleration of the individual putt.
• Slope % Side
  • The average horizontal inclination of the surface
• Slope % Rise
  • The average vertical inclination of the surface

Please see below some PDFs with further details & imagery to accompany these definitions.

• Putting Data Parameters.pdf500 KB