Usage:
# downloads history from 2014 - today
history <- updateHistory()
# update history
history <- updateHistory(history)
# saves the history (default "history.csv")
saveHistory(history, "history.csv")
# returns latest history (default "history.csv")
history <- getLatestHistory()
available.R: Downloads the latest lineup and formats it to history format so that it can be used in analysis.
Usage:
# Must provide a WEEKS_ID.
# Log in to contest and check the provided by `Export to CSV`
# (e.g. Download URL: https://www.draftkings.com/lineup/getavailableplayerscsv?contestTypeId=21&draftGroupId=21720)
WEEKS_ID = 21720
# Get latest available for weeks_id 21720
available <- getLatestAvailable(21720)
# Since your model would likely be trained on historic format, you want to convert available to historic format
availableHistory <- availableToHistory(available, 3, 2018)
# Historic format has "first last" name convention and lower-case 3 letter team abbreviations as defined by mappings.R
Usage:
# Solves for optimal selection based on $prediction. Must have $prediction, $pos and $salary
# Assumes 1 qb, 2 rb, 3 wr, 1 te, 1 def and 1 flex
# Make some predictions about score for this week
availableHistory$prediction <- availableHistory$salary / 500.0 + 10.0
# Solve
results <- solve(availableHistory, budget=50000)
| displayName | week | pos | team | oppt | h.a | teamYear | opptYear | salary | prediction | |
|---|---|---|---|---|---|---|---|---|---|---|
| 8 | Alex Erickson | 3 | WR | cin | atl | a | cin-2018 | cin-2018 | 3000 | 16 |
| 13 | Alvin Kamara | 3 | RB | nor | nyg | a | nor-2018 | nor-2018 | 9600 | 29.2 |
| 17 | Andre Roberts | 3 | WR | njg | jac | a | njg-2018 | njg-2018 | 3000 | 16 |
| 22 | Antony Auclair | 3 | TE | tam | chi | a | tam-2018 | tam-2018 | 2500 | 15 |
| 37 | Buffalo | 3 | Def | buf | gnb | a | buf-2018 | buf-2018 | 2000 | 14 |
| 111 | Derek Carr | 3 | QB | oak | cle | h | oak-2018 | oak-2018 | 5100 | 20.2 |
| 204 | Julio Jones | 3 | WR | atl | cin | h | atl-2018 | atl-2018 | 8200 | 26.4 |
| 210 | Keenan Allen | 3 | WR | lac | sfo | h | lac-2018 | lac-2018 | 8300 | 26.6 |
| 253 | Melvin Gordon III | 3 | RB | lac | sfo | h | lac-2018 | lac-2018 | 8300 | 26.6 |
mappings.R: useful mappings to convert from available format to history format for fields (e.g. "NO" vs "nor")
source("history.R")
source("solve.R")
source("available.R")
WEEKS_ID <- 21720
h <- getLatestHistory()
a <- getLatestAvailable(WEEKS_ID)
ah <- availableToHistory(a, 3, 2018)
ah$prediction <- ah$salary / 500.0 + 10
sol <- solve(ah)