Chess Tournament Results
## Download the file from GitHub and read its contents.
require("utils")
require("readtext")
## Loading required package: readtext
require("stringr")
## Loading required package: stringr
library(utils)
library(stringr)
library(readtext)
filename <- "tournamentinfo.txt"
file_git <- "https://raw.githubusercontent.com/v-sinha/data607/week_04/tournamentinfo.txt"
tf = download.file(file_git, filename, mode = "w")
ftext = readLines(filename, warn = FALSE)
Players <- data.frame("name" = character(),
"state" = character(),
"points" = numeric(),
"rating" = numeric(),
"ave_opp_rating" = numeric())
hdr <- 4
linenum <- hdr + 1
maxlines <- length(ftext)
## The first loop builds player information:
while (linenum < maxlines) {
line1 <- ftext[linenum]
line2 <- ftext[linenum + 1]
linenum <- linenum + 3
#print(line1)
list1 <- unlist(str_split(line1, "\\|"))
list2 <- unlist(str_split(line2, "\\|"))
#print(list1)
str1 <- unlist(str_split(list2[2], ":"))
str2 <- unlist(str_split(str1, "\\s+"))
# discard the non-integer part
elo <- str_trim(gsub("[^[:digit:]]", " ", str2[6]))
elo <- scan(text = elo)
# Add player information to data frame
# The opponent rating information is set to 0 at this stage
player <- data.frame(name = str_trim(list1[2]),
state = str_trim(list2[1]),
points = as.numeric(list1[3]),
rating = as.numeric(elo[1]),
ave_opp_rating = 0.0)
Players <- rbind(Players, player)
}
## The second loop updates the opponent rating information:
linenum <- hdr + 1
index = 0
while (linenum < maxlines) {
index = index + 1
line1 <- ftext[linenum]
linenum <- linenum + 3
list1 <- unlist(str_split(line1, "\\|"))
sum_opp_rating <- 0.0
num_opponents <- 0
for (i in 1:7) {
rstr1 <- unlist(str_split(list1[i + 3], "\\s+"))
opponent = as.integer(rstr1[2])
if (is.na(opponent)) {
# print("err1")
# print(rstr1)
} else {
# The opponent rating information is obtained
# from the Players data frame updated previously.
num_opponents = num_opponents + 1
sum_opp_rating <- sum_opp_rating + Players$rating[[opponent]][1]
}
}
if (num_opponents > 0) {
Players$ave_opp_rating[[index]][1] <- sum_opp_rating / num_opponents
}
}
print(Players)
## name state points rating ave_opp_rating
## 1 GARY HUA ON 6.0 1794 1605.286
## 2 DAKSHESH DARURI MI 6.0 1553 1469.286
## 3 ADITYA BAJAJ MI 6.0 1384 1563.571
## 4 PATRICK H SCHILLING MI 5.5 1716 1573.571
## 5 HANSHI ZUO MI 5.5 1655 1500.857
## 6 HANSEN SONG OH 5.0 1686 1518.714
## 7 GARY DEE SWATHELL MI 5.0 1649 1372.143
## 8 EZEKIEL HOUGHTON MI 5.0 1641 1468.429
## 9 STEFANO LEE ON 5.0 1411 1523.143
## 10 ANVIT RAO MI 5.0 1365 1554.143
## 11 CAMERON WILLIAM MC LEMAN MI 4.5 1712 1467.571
## 12 KENNETH J TACK MI 4.5 1663 1506.167
## 13 TORRANCE HENRY JR MI 4.5 1666 1497.857
## 14 BRADLEY SHAW MI 4.5 1610 1515.000
## 15 ZACHARY JAMES HOUGHTON MI 4.5 1220 1483.857
## 16 MIKE NIKITIN MI 4.0 1604 1385.800
## 17 RONALD GRZEGORCZYK MI 4.0 1629 1498.571
## 18 DAVID SUNDEEN MI 4.0 1600 1480.000
## 19 DIPANKAR ROY MI 4.0 1564 1426.286
## 20 JASON ZHENG MI 4.0 1595 1410.857
## 21 DINH DANG BUI ON 4.0 1563 1470.429
## 22 EUGENE L MCCLURE MI 4.0 1555 1300.333
## 23 ALAN BUI ON 4.0 1363 1213.857
## 24 MICHAEL R ALDRICH MI 4.0 1229 1357.000
## 25 LOREN SCHWIEBERT MI 3.5 1745 1363.286
## 26 MAX ZHU ON 3.5 1579 1506.857
## 27 GAURAV GIDWANI MI 3.5 1552 1221.667
## 28 SOFIA ADINA STANESCU-BELLU MI 3.5 1507 1522.143
## 29 CHIEDOZIE OKORIE MI 3.5 1602 1313.500
## 30 GEORGE AVERY JONES ON 3.5 1522 1144.143
## 31 RISHI SHETTY MI 3.5 1494 1259.857
## 32 JOSHUA PHILIP MATHEWS ON 3.5 1441 1378.714
## 33 JADE GE MI 3.5 1449 1276.857
## 34 MICHAEL JEFFERY THOMAS MI 3.5 1399 1375.286
## 35 JOSHUA DAVID LEE MI 3.5 1438 1149.714
## 36 SIDDHARTH JHA MI 3.5 1355 1388.167
## 37 AMIYATOSH PWNANANDAM MI 3.5 980 1384.800
## 38 BRIAN LIU MI 3.0 1423 1539.167
## 39 JOEL R HENDON MI 3.0 1436 1429.571
## 40 FOREST ZHANG MI 3.0 1348 1390.571
## 41 KYLE WILLIAM MURPHY MI 3.0 1403 1248.500
## 42 JARED GE MI 3.0 1332 1149.857
## 43 ROBERT GLEN VASEY MI 3.0 1283 1106.571
## 44 JUSTIN D SCHILLING MI 3.0 1199 1327.000
## 45 DEREK YAN MI 3.0 1242 1152.000
## 46 JACOB ALEXANDER LAVALLEY MI 3.0 377 1357.714
## 47 ERIC WRIGHT MI 2.5 1362 1392.000
## 48 DANIEL KHAIN MI 2.5 1382 1355.800
## 49 MICHAEL J MARTIN MI 2.5 1291 1285.800
## 50 SHIVAM JHA MI 2.5 1056 1296.000
## 51 TEJAS AYYAGARI MI 2.5 1011 1356.143
## 52 ETHAN GUO MI 2.5 935 1494.571
## 53 JOSE C YBARRA MI 2.0 1393 1345.333
## 54 LARRY HODGE MI 2.0 1270 1206.167
## 55 ALEX KONG MI 2.0 1186 1406.000
## 56 MARISA RICCI MI 2.0 1153 1414.400
## 57 MICHAEL LU MI 2.0 1092 1363.000
## 58 VIRAJ MOHILE MI 2.0 917 1391.000
## 59 SEAN M MC CORMICK MI 2.0 853 1319.000
## 60 JULIA SHEN MI 1.5 967 1330.200
## 61 JEZZEL FARKAS ON 1.5 955 1327.286
## 62 ASHWIN BALAJI MI 1.0 1530 1186.000
## 63 THOMAS JOSEPH HOSMER MI 1.0 1175 1350.200
## 64 BEN LI MI 1.0 1163 1263.000
write.csv(Players, file = "Players.csv")