/
team-stats-url-grabber.R
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team-stats-url-grabber.R
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#----------------------------------------------------------------------------------------------
# File: team-stats-register-url-grabber.R
# Date: 08-09-2012
# Author: Eric Nantz
# URL: https://github.com/thercast/nhl_analysis/blob/master/web-scraping/skater-register-url-grabber.R
# Email: theRcast@gmail.com
# Purpose: Assemble and scrape valid URLs with skater and goalie register data
# from www.hockey-reference.com
# License: Creative Commons Attribution-ShareAlike 3.0 Unported License
#
# Notes:
# - code adapted from Ryan Elmore's analysis of baseball boxscore data:
# - https://github.com/rtelmore/Pitch_Count
# - http://www.slideshare.net/rtelmore/user-2012-talk
#
# To Do:
#
# ATLANTA (ATL) skaters table on web site does not have even strength assist, pp assits, sh assists
# http://www.hockey-reference.com/teams/ATL/skaters.html
# MTW
#----------------------------------------------------------------------------------------------
# load required packages
library(XML, lib.loc="/usr/local/lib/R/site-library")
library(stringr)
library(RMySQL)
# define debug flag
debug.set <- FALSE
# define database table names for MySQL
skater.dbtable <- "SKATER_REGISTER"
goalie.dbtable <- "GOALIE_REGISTER"
coach.dbtable <- "COACH_REGISTER"
draft.dbtable <- "DRAFT_REGISTER"
captain.dbtable <- "CAPTAIN_REGISTER"
h2h.dbtable <- "H2H_REGISTER"
# connect to hockey database
# assumes username and password are specified in ~/.my.cnf
mychannel <- dbConnect(MySQL(), dbname = "hockey", group="client")
# define indicator for whether to overwrite existing log with new log
log.name <- "register.log.txt"
overwrite.existing <- TRUE
if(overwrite.existing) {
if(file.exists(file.path("logs", log.name))) {
file.remove(file.path("logs", log.name))
}
}
# define variables used in loops below
load(file="web-scraping/url.check.data.RData")
team.valid <- data.tracker.team[data.tracker.team$skater.register,]
teams <- team.valid$team
if(debug.set) {
teams <- c("ANA", "ATL")
# define database table names for MySQL
skater.dbtable <- "SKATER_REGISTER_TEST"
goalie.dbtable <- "GOALIE_REGISTER_TEST"
coach.dbtable <- "COACH_REGISTER_TEST"
draft.dbtable <- "DRAFT_REGISTER_TEST"
captain.dbtable <- "CAPTAIN_REGISTER_TEST"
h2h.dbtable <- "H2H_REGISTER_TEST"
if(dbExistsTable(mychannel, skater.dbtable)) {
dbRemoveTable(conn=mychannel, name=skater.dbtable)
dbRemoveTable(conn=mychannel, name=goalie.dbtable)
dbRemoveTable(conn=mychannel, name=coach.dbtable)
dbRemoveTable(conn=mychannel, name=draft.dbtable)
dbRemoveTable(conn=mychannel, name=captain.dbtable)
dbRemoveTable(conn=mychannel, name=h2h.dbtable)
}
}
base.url <- "http://www.hockey-reference.com/teams/"
# define names for MySQL table names and column types
skater.table.column.names <- c("team",
"rk",
"player",
"from",
"to",
"yrs",
"pos",
"gp",
"goals",
"assists",
"points",
"goals_created",
"plus_minus",
"pim",
"goals_even",
"goals_pp",
"goals_sh",
"goals_gw",
"assists_even",
"assists_sh",
"assists_pp",
"shots",
"shooting_percent",
"time_on_ice",
"avg_time_on_ice")
skater.table.classes <- list(team="CHAR(100)",
rk="INT",
player="CHAR(100)",
from="INT",
to="INT",
yrs="INT",
pos="CHAR(5)",
gp="INT",
goals="INT",
assists="INT",
points="INT",
goals_created="INT",
plus_minus="INT",
pim="INT",
goals_even="INT",
goals_pp="INT",
goals_sh="INT",
goals_gw="INT",
assists_even="INT",
assists_sh="INT",
assists_pp="INT",
shots="INT",
shooting_percent="DOUBLE(6,3)",
time_on_ice="INT",
avg_time_on_ice="CHAR(10)")
goalie.table.column.names <- c("team",
"rk",
"player",
"from",
"to",
"yrs",
"gp",
"w",
"l",
"tot",
"ga",
"sa",
"sv",
"sv_percent",
"gaa",
"so",
"min",
"goals",
"assists",
"points")
goalie.table.classes <- list(team="CHAR(100)",
rk="INT",
player="CHAR(100)",
from="INT",
to="INT",
yrs="INT",
gp="INT",
w="INT",
l="INT",
tot="INT",
ga="INT",
sa="INT",
sv="INT",
sv_percent="DOUBLE(6,3)",
gaa="DOUBLE(6,3)",
so="INT",
min="INT",
goals="INT",
assists="INT",
points="INT")
coach.table.column.names <- c("team",
"rk",
"coach",
"from",
"to",
"yrs",
"reg_gp",
"reg_w",
"reg_l",
"reg_t",
"reg_ol",
"reg_points",
"reg_points_percent",
"playoff_g",
"playoff_w",
"playoff_l",
"playoff_t",
"playoff_w_l_percent")
coach.table.classes <- list(team="CHAR(100)",
rk="INT",
coach="CHAR(100)",
from="INT",
to="INT",
yrs="INT",
reg_gp="INT",
reg_w="INT",
reg_l="INT",
reg_t="INT",
reg_ol="INT",
reg_points="INT",
reg_points_percent="DOUBLE(6,3)",
playoff_g="INT",
playoff_w="INT",
playoff_l="INT",
playoff_t="INT",
playoff_w_l_percent="DOUBLE(6,3)")
draft.table.column.names <- c("team",
"year",
"league",
"draft",
"round",
"overall",
"player",
"amateur_team",
"skater_gp",
"skater_goals",
"skater_assists",
"skater_points",
"skater_plus_minus",
"skater_pim",
"goalie_gp",
"goalie_wins",
"goalie_losses",
"goalie_tot",
"goalie_save_percent",
"goalie_gaa")
draft.table.classes <- list(team="CHAR(100)",
year="INT",
league="CHAR(20)",
draft="CHAR(20)",
round="INT",
overall="INT",
player="CHAR(100)",
amateur_team="CHAR(100)",
skater_gp="INT",
skater_goals="INT",
skater_assists="INT",
skater_points="INT",
skater_plus_minus="INT",
skater_pim="INT",
goalie_gp="INT",
goalie_wins="INT",
goalie_losses="INT",
goalie_tot="INT",
goalie_save_percent="DOUBLE(6,3)",
goalie_gaa="DOUBLE(6,3)")
captain.table.column.names <- c("team",
"rk",
"season",
"player",
"skater_gp",
"skater_goals",
"skater_assists",
"skater_points",
"skater_plus_minus",
"skater_pim",
"goalie_gp",
"goalie_wins",
"goalie_losses",
"goalie_tot",
"goalie_save_percent",
"goalie_gaa")
captain.table.classes <- list(team="CHAR(100)",
rk="INT",
season="CHAR(20)",
player="CHAR(100)",
scoring_gp="INT",
scoring_goals="INT",
scoring_assists="INT",
scoring_points="INT",
scoring_plus_minus="INT",
scoring_pim="INT",
goalie_gp="INT",
goalie_wins="INT",
goalie_losses="INT",
goalie_tot="INT",
goalie_save_percent="DOUBLE(6,3)",
goalie_gaa="DOUBLE(6,3)")
h2h.table.column.names <- c("team",
"rk",
"opponent",
"gp",
"wins",
"losses",
"ties",
"overtime_losses",
"points",
"points_percent",
"goals_for",
"goals_against",
"goals_for_per_game",
"goals_against_per_game")
h2h.table.classes <- list(team="CHAR(100)",
rk="INT",
opponent="CHAR(100)",
gp="INT",
wins="INT",
losses="INT",
ties="INT",
overtime_losses="INT",
points="INT",
points_percent="DOUBLE(6,3)",
goals_for="INT",
goals_against="INT",
goals_for_per_game="DOUBLE(6,3)",
goals_against_per_game="DOUBLE(6,3)")
for (team in teams) { #team
full.skater.url <- paste(base.url, team, "/", "skaters.html", sep="")
full.goalie.url <- paste(base.url, team, "/", "goalies.html", sep="")
full.coach.url <- paste(base.url, team, "/", "coaches.html", sep="")
full.draft.url <- paste(base.url, team, "/", "draft.html", sep="")
full.captain.url <- paste(base.url, team, "/", "captains.html", sep="")
full.h2h.url <- paste(base.url, team, "/", "head2head.html", sep="")
out.string <- paste(Sys.time(), "--", team, sep = " ")
print(out.string)
cat(out.string, "\n", file=file.path("logs", log.name), append=TRUE)
table.skater.stats <- readHTMLTable(full.skater.url,
#header=skater.table.column.names,
header=NA,
#colClasses=skater.colclasses,
stringsAsFactors=FALSE)
table.goalie.stats <- readHTMLTable(full.goalie.url,
#header=goalie.table.column.names,
header=NA,
#colClasses=goalie.colclasses,
stringsAsFactors=FALSE)
table.coach.stats <- readHTMLTable(full.coach.url,
#header=coach.table.column.names,
header=NA,
#colClasses=coach.colclasses,
stringsAsFactors=FALSE)
table.draft.stats <- readHTMLTable(full.draft.url,
#header=draft.table.column.names,
header=NA,
#colClasses=draft.colclasses,
stringsAsFactors=FALSE)
table.captain.stats <- readHTMLTable(full.captain.url,
#header=captain.table.column.names,
header=NA,
#colClasses=captain.colclasses,
stringsAsFactors=FALSE)
table.h2h.stats <- readHTMLTable(full.h2h.url,
#header=h2h.table.column.names,
header=NA,
#colClasses=h2h.colclasses,
stringsAsFactors=FALSE)
skater.table.ind <- unlist(str_detect(names(table.skater.stats), "skaters"))
goalie.table.ind <- unlist(str_detect(names(table.goalie.stats), "goalies"))
coach.table.ind <- unlist(str_detect(names(table.coach.stats), "coaches"))
draft.table.ind <- unlist(str_detect(names(table.draft.stats), "stats"))
captain.table.ind <- unlist(str_detect(names(table.captain.stats), "captains"))
h2h.table.ind <- unlist(str_detect(names(table.h2h.stats), "head2head"))
if (sum(skater.table.ind, na.rm=TRUE) == 1) {
team.skater.table <- table.skater.stats[["skaters"]]
# check if assist column names are present in the imported skater stat table
# if not, then need to remove them from the column names
if(names(team.skater.table)[18] != "EV" & names(team.skater.table)[19] != "SH" & names(team.skater.table)[20] != "PP") {
start.window <- which(names(team.skater.table) == "GW")
team.skater.table <- cbind(team, team.skater.table[1:start.window], NA, NA, NA, team.skater.table[(start.window+1):ncol(team.skater.table)])
} else {
team.skater.table <- cbind(team, team.skater.table)
}
names(team.skater.table) <- skater.table.column.names
#team.skater.table$team <- team
team.skater.table <- team.skater.table[!team.skater.table$rk=="Rk",]
team.skater.table <- team.skater.table[!is.na(team.skater.table$rk),]
if(dbExistsTable(mychannel, skater.dbtable)) {
dbWriteTable(mychannel,
skater.dbtable,
team.skater.table,
append = TRUE,
row.names=FALSE,
field.types=skater.table.classes)
} else dbWriteTable(mychannel,
skater.dbtable,
team.skater.table,
row.names=FALSE,
field.types=skater.table.classes)
}
else team.skater.table <- NULL
if (sum(goalie.table.ind, na.rm=TRUE) == 1) {
team.goalie.table <- table.goalie.stats[["goalies"]]
team.goalie.table <- cbind(team, team.goalie.table)
names(team.goalie.table) <- goalie.table.column.names
#team.goalie.table$team <- team
team.goalie.table <- team.goalie.table[!team.goalie.table$rk %in% c("Rk", ""),]
team.goalie.table <- team.goalie.table[!is.na(team.goalie.table$rk),]
if(dbExistsTable(mychannel, goalie.dbtable)) {
dbWriteTable(mychannel, goalie.dbtable,
team.goalie.table,
append = TRUE,
row.names=FALSE,
field.types=goalie.table.classes)
} else dbWriteTable(mychannel,
goalie.dbtable,
team.goalie.table,
row.names=FALSE,
field.types=goalie.table.classes)
}
else team.goalie.table <- NULL
if (sum(coach.table.ind, na.rm=TRUE) == 1) {
team.coach.table <- table.coach.stats[["coaches"]]
team.coach.table <- cbind(team, team.coach.table)
names(team.coach.table) <- coach.table.column.names
#team.coach.table$team <- team
team.coach.table <- team.coach.table[!team.coach.table$rk=="Rk",]
team.coach.table <- team.coach.table[!team.coach.table$coach=="Regular Season",]
team.coach.table <- team.coach.table[!is.na(team.coach.table$rk),]
if(dbExistsTable(mychannel, coach.dbtable)) {
dbWriteTable(mychannel,
coach.dbtable,
team.coach.table,
append = TRUE,
row.names=FALSE,
field.types=coach.table.classes)
} else dbWriteTable(mychannel,
coach.dbtable,
team.coach.table,
row.names=FALSE,
field.types=coach.table.classes)
}
else team.coach.table <- NULL
if (sum(draft.table.ind, na.rm=TRUE) == 1) {
team.draft.table <- table.draft.stats[["stats"]]
team.draft.table <- cbind(team, team.draft.table)
names(team.draft.table) <- draft.table.column.names
#team.draft.table$team <- team
team.draft.table <- team.draft.table[!team.draft.table$year=="Year",]
team.draft.table <- team.draft.table[!is.na(team.draft.table$year),]
if(dbExistsTable(mychannel, draft.dbtable )) {
dbWriteTable(mychannel,
draft.dbtable ,
team.draft.table,
append = TRUE,
row.names=FALSE,
field.types=draft.table.classes)
} else dbWriteTable(mychannel,
draft.dbtable ,
team.draft.table,
row.names=FALSE,
field.types=draft.table.classes)
}
else team.draft.table <- NULL
if (sum(captain.table.ind, na.rm=TRUE) == 1) {
team.captain.table <- table.captain.stats[["captains"]]
team.captain.table <- cbind(team, team.captain.table)
names(team.captain.table) <- captain.table.column.names
#team.captain.table$team <- team
if(dbExistsTable(mychannel, captain.dbtable)) {
dbWriteTable(mychannel,
captain.dbtable,
team.captain.table,
append = TRUE,
row.names=FALSE,
field.types=captain.table.classes)
} else dbWriteTable(mychannel,
captain.dbtable,
team.captain.table,
row.names=FALSE,
field.types=captain.table.classes)
}
else team.captain.table <- NULL
if (sum(h2h.table.ind, na.rm=TRUE) == 1) {
team.h2h.table <- table.h2h.stats[["head2head"]]
team.h2h.table <- cbind(team, team.h2h.table)
names(team.h2h.table) <- h2h.table.column.names
#team.h2h.table$team <- team
if(dbExistsTable(mychannel, h2h.dbtable)) {
dbWriteTable(mychannel,
h2h.dbtable,
team.h2h.table,
append = TRUE,
row.names=FALSE,
field.types=h2h.table.classes)
} else dbWriteTable(mychannel,
h2h.dbtable,
team.h2h.table,
row.names=FALSE,
field.types=h2h.table.classes)
}
else team.h2h.table <- NULL
# clean up workspace
rm(team.skater.table)
rm(team.goalie.table)
rm(team.coach.table)
rm(team.draft.table)
rm(team.captain.table)
rm(team.h2h.table)
}
# close database connection
dbDisconnect(mychannel)