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FilesDownload_ver03d.Rmd
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---
title: "File Download for past MS exams"
author: "Prof. Eric A. Suess"
output: html_notebook
---
You can run this R notebook to download all of the past Statistics and Biostatistics MS exam data files, 2013 - 2018.
The data files are downloaded from the MS Exam github repository. [msexam](https://github.com/esuess/msexam/tree/master/pastmsexam)
```{r}
files <- list(
# files [[year j]] [[fall or spring i]] [[url 1]] [[stat 2]] [[biostat 3]]
d2018 = list(
df = list(url = "NA",
fs = list("NA"),
fb = list("NA") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2018/Spring2018/",
ss = list("ob_prob1.csv","sat_data.txt","lemon.csv","prob4.dat","BigMac.csv"),
sb = list("ob_prob1.csv","sat_data.txt","lemon.csv","prob4.dat","uis.txt") ) ),
d2017 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2017/Fall2017/",
fs = list("INJURY9.csv","river.csv","prostate.csv","prob4.txt","Jets.csv"),
fb = list("INJURY9.csv","river.csv","prostate.csv","prob4.txt","valung.csv") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2017/Spring2017/",
ss = list("ob_prob1.xlsx","problem2.sas","heart.csv","sales.txt","Barley.csv"),
sb = list("ob_prob1.xlsx","problem2.sas","heart.csv","sales.txt","breast.csv") ) ),
d2016 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2016/Fall2016/",
fs = list("hypnotic_induction.csv","problem2.sas","mammography.csv","cars.txt","forest.csv"),
fb = list("hypnotic_induction.csv","problem2.sas","mammography.csv","cars.txt","kidrecurr.txt") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2016/Spring2016/",
ss = list("cakemix.txt","problem2.csv","health.txt","DES_all.txt"),
sb = list("cakemix.txt","problem2.csv","health.txt","selenium.csv") ) ),
d2015 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2015/Fall2015/",
fs = list("problem1.sas","Expenditure.csv","reading.txt","prob4.dat","iris.xlsx","iris.jpg"),
fb = list("problem1.sas","Expenditure.csv","reading.txt","prob4.dat","tongue_cancer.csv") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2015/Spring2015/",
ss = list("problem1.txt","problem1.MTW","salary.txt","ob_prob3.txt","prob4.dat","Survey_nonames_nocountry.xlsx","Survey_nonames_nocountry_corrected.xlsx"),
sb = list("problem1.txt","problem1.MTW","salary.txt","ob_prob3.txt","prob4.dat","valung_small.csv") ) ),
d2014 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2014/Fall2014/",
fs = list("music.txt","sales.txt","Scout.txt","problem5.txt"),
fb = list("music.txt","sales.txt","Scout.txt","SevAn.txt") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2014/Spring2014/",
ss = list("foodeffect.txt","reaction_time.txt","eld.txt","gamma.txt","mle2dgamma.R","problem5.txt"),
sb = list("foodeffect.txt","reaction_time.txt","eld.txt","gamma.txt","mle2dgamma.R","phd.txt") ) ),
d2013 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2013/Fall2013/",
fs = list("counts.txt","Concrete.xls","CHD.txt","logodds.R","problem5.txt"),
fb = list("counts.txt","Concrete.xls","CHD.txt","logodds.R","valung.csv") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2013/Spring2013/",
ss = list("ob_prob1_bulbs.txt","ob_prob1_bulbs.xls","wealthy.csv","problem3.MTW","Weibull.R","ob_prob5_solid%20tumor.txt"),
sb = list("ob_prob1_bulbs.txt","ob_prob1_bulbs.xls","wealthy.csv","Weibull.R","ob_prob5_solid%20tumor.txt") ) ),
d2012 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2012/Fall2012/",
fs = list("question1.csv","question1.mtw","question1.sas","sales.txt","problem4.R"),
fb = list("question1.csv","question1.mtw","question1.sas","sales.txt","problem4.R") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2012/Spring2012/",
ss = list("batteries.txt","housing.txt","housing.csv","component.R"),
sb = list("batteries.txt","housing.txt","housing.csv","component.R","BMTH.txt") ) ),
d2011 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2011/Fall2011/",
fs = list("release.txt","health.txt","Hodgkin.txt","cans.R"),
fb = list("release.txt","health.txt","Hodgkin.txt","cans.R","breast.csv") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2011/Spring2011/",
ss = list("Compound.XLS","RealEstate.txt","achscor.XLS","rtestach.r","landings.R"),
sb = list("Compound.XLS","RealEstate.txt","achscor.XLS","rtestach.r","landings.R","b_cancer.txt") ) ),
d2010 = list(
df = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2010/Fall2010/",
fs = list("DRUG.txt","problem2.csv","guns.txt","gamma-arrivals.txt","arrivals.R"),
fb = list("DRUG.txt","problem2.csv","guns.txt","gamma-arrivals.txt","arrivals.R","q5.txt") ),
ds = list(url = "https://github.com/esuess/msexam/blob/master/pastmsexam/2010/Spring2010/",
ss = list("TEMPBAT.TXT","shootout%20by%20team.xls","shootout%20by%20team.txt","weights.txt","umvue.R"),
sb = list("TEMPBAT.TXT","shootout%20by%20team.xls","shootout%20by%20team.txt","weights.txt","umvue.R","BMT.txt") ) )
)
```
First set up the directories where you will download all of the files.
```{r}
download_dir <- "C:/Past_MS_Exams-CSUEB_Statistics_and_Biostatistics"
print(download_dir)
ifelse(!dir.exists(file.path(download_dir)), dir.create(file.path(download_dir)),
paste0("Directory already exists"))
#setwd(file.path(download_dir))
stat_dir <- file.path(download_dir, "Past_MS_Exams-Statistics")
stat_dir
biostat_dir <- file.path(download_dir, "Past_MS_Exams-Biostatistics")
biostat_dir
print(stat_dir)
ifelse(!dir.exists(file.path(stat_dir)), dir.create(file.path(stat_dir)),
paste0("Directory already exists"))
print(biostat_dir)
ifelse(!dir.exists(file.path(biostat_dir)), dir.create(file.path(biostat_dir)),
paste0("Directory already exists"))
```
Second create the subdirectories to download the files to and download the files.
```{r}
start_year <- 2010
end_year <- 2018
years <- (end_year-start_year+1)
test <- list("Fall", "Spring")
for (i in 1: length(test)){ # spring or fall
for (j in end_year: start_year){ # year
DIR <- paste0(j,"_",test[[i]])
print(DIR)
# Make Statistics subdirectories
stat_dir_new <- file.path(stat_dir, DIR)
print(stat_dir_new)
ifelse(!dir.exists(file.path(stat_dir, DIR)), dir.create(file.path(stat_dir, DIR)),
print(paste0("Directory already exists")))
for (k in 1: length(files[[(end_year-j+1)]][[i]][[(2)]])) {
if( files[[(end_year-j+1)]][[i]][[2]][[k]] == "NA"){ break }
download.file( paste0( files[[(end_year-j+1)]][[i]][[1]], paste0( files[[(end_year-j+1)]][[i]][[2]][[k]] ) ),
paste0(file.path(stat_dir, DIR ),"/",paste0(files[[(end_year-j+1)]][[i]][[2]][[k]])) )
}
# Make Biostat subdirectories
biostat_dir_new <- file.path(biostat_dir, DIR)
print(biostat_dir_new)
ifelse(!dir.exists(file.path(biostat_dir, DIR)), dir.create(file.path(biostat_dir, DIR)),
print(paste0("Directory already exists")))
for (k in 1: length(files[[(end_year-j+1)]][[i]][[3]])) {
if( files[[(end_year-j+1)]][[i]][[3]][[k]] == "NA"){ break }
download.file( paste0( files[[(end_year-j+1)]][[i]][[1]], paste0( files[[(end_year-j+1)]][[i]][[3]][[k]] ) ),
paste0(file.path(biostat_dir, DIR ),"/",paste0(files[[(end_year-j+1)]][[i]][[3]][[k]])) )
}
}
}
```
```
The github files are structured differently before Spring 2010.
```{r}
download_dir <- "C:/msexam/"
dir.create(download_dir)
stat_dir <- file.path(download_dir, "stat")
dir.create(stat_dir)
biostat_dir <- file.path(download_dir, "biostat")
dir.create(biostat_dir)
```
```{r}
stat_Spring_2018_dir <- file.path(stat_dir, "Spring_2018")
dir.create(stat_Spring_2018_dir)
biostat_Spring_2018_dir <- file.path(biostat_dir, "Spring_2018")
dir.create(biostat_Spring_2018_dir)
stat_Fall_2017_dir <- file.path(stat_dir, "Fall_2017")
dir.create(stat_Fall_2017_dir)
biostat_Fall_2017_dir <- file.path(biostat_dir, "Fall_2017")
dir.create(biostat_Fall_2017_dir)
stat_Spring_2017_dir <- file.path(stat_dir, "Spring_2017")
dir.create(stat_Spring_2017_dir)
biostat_Spring_2017_dir <- file.path(biostat_dir, "Spring_2017")
dir.create(biostat_Spring_2017_dir)
```
### MS Exam, Biostatistics, Spring 2012
```{r}
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/ob_prob1.csv", file.path(stat_Spring_2018_dir, "ob_prob1.csv"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/sat_data.txt", file.path(stat_Spring_2018_dir, "sat_data.txt"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/lemon.csv", file.path(stat_Spring_2018_dir, "lemon.csv"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/prob4.dat", file.path(stat_Spring_2018_dir, "prob4.dat"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/BigMac.csv", file.path(stat_Spring_2018_dir, "BigMac.csv"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/ob_prob1.csv", file.path(biostat_Spring_2018_dir, "ob_prob1.csv"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/sat_data.txt", file.path(biostat_Spring_2018_dir, "sat_data.txt"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/lemon.csv", file.path(biostat_Spring_2018_dir, "lemon.csv"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/prob4.dat", file.path(biostat_Spring_2018_dir, "prob4.dat"))
download.file("https://raw.githubusercontent.com/esuess/msexam/master/pastmsexam/2018/Spring2018/uis.txt", file.path(biostat_Spring_2018_dir, "uis.txt"))
```