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nflverse / nflfastR

A Set of Functions to Efficiently Scrape NFL Play by Play Data
https://www.nflfastr.com/
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Inconsistent yardage on lateral plays #143

Closed waitwhereami closed 3 years ago

waitwhereami commented 3 years ago

There seems to be some inconsistency with how yards_gained is calculated on lateral plays. If the total yardage from the play is positive, yards_gained has the correct value, however, if the yardage from the play is negative, yards_gained is always 0. Additionally, there seem to be some issues with the air_yards and yards_after_catch fields on these plays as well, but that appears to be less consistent; they just don't seem to add up correctly at all unless I'm missing something.

Examples: play_id game_id desc yards_gained air_yards yards_after_catch
1439 2020_03_DAL_SEA (12:52) (Shotgun) 4-D.Prescott pass short middle to 20-T.Pollard to DAL 15 for -6 yards. Lateral to 88-C.Lamb to DAL 16 for 1 yard (97-P.Ford). 0 (exp: -5) -3 -2
1909 2020_06_LA_SF (1:26) (Shotgun) 16-J.Goff pass short right to 10-C.Kupp to LA 23 for -5 yards. Lateral to 27-D.Henderson pushed ob at LA 32 for 9 yards (20-J.Ward). 4 (exp: 4) -3 3
1334 2020_07_CLE_CIN (10:26) (Shotgun) 6-B.Mayfield pass short middle to 80-J.Landry to CLE 47 for -6 yards. Lateral to 27-K.Hunt to 50 for 3 yards (21-M.Alexander; 90-K.Kareem). 0 (exp: -3) -4 1
2762 2020_08_ATL_CAR (3:57) (Shotgun) 6-P.Walker pass short middle to 10-C.Samuel to ATL 31 for -7 yards. Lateral to 11-R.Anderson to ATL 21 for 10 yards (26-I.Oliver). 3 (exp: 3) -3 3
guga31bb commented 3 years ago

Duplicate of https://github.com/mrcaseb/nflfastR/issues/115

guga31bb commented 3 years ago

Closing since it's a duplicate