Getting Started with R
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Also see - Facebook and R | R Notes | R Articles
Some Commands
Misc
data <- read.table(filename,header=TRUE) # Read tab or space delimited file with a header csv_data <- read.table(filename,header=TRUE,sep=',') # Read csv files with a header v1 <- c(1,2,3,4,5,6,7) # Create a vector from these values v2 <- c(1:10) # Create a vector from 1 to 10 v3 <- c(v1,v2) # Concatenate the vectors matrix1 <- cbind(v1,v2) # Column bind into a 2 x n matrix ls # List objects
Mean, SD, etc.
> sapply(h, length) WList_Len 4599 > sapply(h, mean) WList_Len 15.6845 > sapply(h, sd) WList_Len 15.74873 >
Installing Modules
> install.packages('vars',,'http://cran.ms.unimelb.edu.au') also installing the dependencies ‘zoo’, ‘strucchange’, ‘urca’, ‘lmtest’, ‘sandwich’ trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/zoo_1.7-13.zip' Content type 'application/zip' length 900080 bytes (878 KB) downloaded 878 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/strucchange_1.5-1.zip' Content type 'application/zip' length 789069 bytes (770 KB) downloaded 770 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/urca_1.2-9.zip' Content type 'application/zip' length 935642 bytes (913 KB) downloaded 913 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/lmtest_0.9-34.zip' Content type 'application/zip' length 284171 bytes (277 KB) downloaded 277 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/sandwich_2.3-4.zip' Content type 'application/zip' length 504789 bytes (492 KB) downloaded 492 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/vars_1.5-2.zip' Content type 'application/zip' length 559244 bytes (546 KB) downloaded 546 KB package ‘zoo’ successfully unpacked and MD5 sums checked package ‘strucchange’ successfully unpacked and MD5 sums checked package ‘urca’ successfully unpacked and MD5 sums checked package ‘lmtest’ successfully unpacked and MD5 sums checked package ‘sandwich’ successfully unpacked and MD5 sums checked package ‘vars’ successfully unpacked and MD5 sums checked
> install.packages("Rfacebook") --- Please select a CRAN mirror for use in this session --- also installing the dependencies ‘jsonlite’, ‘mime’, ‘curl’, ‘openssl’, ‘R6’, ‘Rcpp’, ‘httr’, ‘rjson’, ‘httpuv’ trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/jsonlite_1.0.zip' Content type 'application/zip' length 1095337 bytes (1.0 MB) downloaded 1.0 MB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/mime_0.5.zip' Content type 'application/zip' length 37477 bytes (36 KB) downloaded 36 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/curl_1.1.zip' Content type 'application/zip' length 4415226 bytes (4.2 MB) downloaded 4.2 MB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/openssl_0.9.4.zip' Content type 'application/zip' length 3001737 bytes (2.9 MB) downloaded 2.9 MB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/R6_2.1.2.zip' Content type 'application/zip' length 271199 bytes (264 KB) downloaded 264 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/Rcpp_0.12.6.zip' Content type 'application/zip' length 3256650 bytes (3.1 MB) downloaded 3.1 MB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/httr_1.2.1.zip' Content type 'application/zip' length 281284 bytes (274 KB) downloaded 274 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/rjson_0.2.15.zip' Content type 'application/zip' length 561827 bytes (548 KB) downloaded 548 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/httpuv_1.3.3.zip' Content type 'application/zip' length 895070 bytes (874 KB) downloaded 874 KB trying URL 'http://cran.ms.unimelb.edu.au/bin/windows/contrib/3.3/Rfacebook_0.6.6.zip' Content type 'application/zip' length 79878 bytes (78 KB) downloaded 78 KB package ‘jsonlite’ successfully unpacked and MD5 sums checked package ‘mime’ successfully unpacked and MD5 sums checked package ‘curl’ successfully unpacked and MD5 sums checked package ‘openssl’ successfully unpacked and MD5 sums checked package ‘R6’ successfully unpacked and MD5 sums checked package ‘Rcpp’ successfully unpacked and MD5 sums checked package ‘httr’ successfully unpacked and MD5 sums checked package ‘rjson’ successfully unpacked and MD5 sums checked package ‘httpuv’ successfully unpacked and MD5 sums checked package ‘Rfacebook’ successfully unpacked and MD5 sums checked The downloaded binary packages are in C:\Users\xxx\AppData\Local\Temp\RtmpmkZC5k\downloaded_packages >
Some Links
- https://www.zoology.ubc.ca/~schluter/R/calculate/
- http://www.r-tutor.com/elementary-statistics/numerical-measures/mean
- http://stat.ethz.ch/R-manual/R-patched/library/stats/html/median.html
- http://www.cyclismo.org/tutorial/R/index.html
- http://answers.oreilly.com/topic/2597-how-to-compute-basic-statistics-with-r/
- http://grokbase.com/g/r/r-help
Personality Project
- http://www.personality-project.org/r/r.commands.html
- http://www.personality-project.org/r/r.guide.html
- http://personality-project.org/r/r.short.html
- http://www.personality-project.org/r/psych/HowTo/
Neil Gunther's 911 Help
See File:911r.pdf for the PDF document.
# Emergency help for R newbies # Created by NJG on Fri Aug 15, 2011 # Updated by NJG on Mon Jan 9 2012 # 1. Set YOUR path to this 911.r script in the following variable: # LUNUX: Command needs to gnome-open # WINDOWS: C:\\You path\\ needs "\\" to esc '\' and '9' in 991.r # MACOSX: Put in explicit full path name path911 <- "/Users/njg/Desktop//911/" # 2. Now run this script in the R Console. # It is assumed that Acrobat Reader is installed. help.911 <- function() { ost <- "unknown" switch(Sys.info()[['sysname']], Darwin = { ost <- "Mac OS X" cmd <- "open" }, Linux = { ost <- "Linux" cmd <- "gnome-open" }, Windows = { ost <- "Windows" cmd <- "open" } ) if(ost == "unknown") { stop("Unknown operating system") } setwd(path911) t <- try(system(paste(cmd, "911r.pdf"))) if(t != 0) { stop(sprintf("system() call problem running on %s system", ost)) } } # 3. Usage cat("Type 'help.911()' at anytime at the R Console prompt\n") cat("to open the 911r.pdf file in Acrobat Reader.\n") cat("Like this:\n") cat("> help.911()\n") help.911()
Command History
files <- list.files(pattern="*.csv") files data <- lapply(files, read.table, sep=",", header=T) data stuff <- as.data.frame(do.call(rbind, data)) stuff dim(stuff) print(dframe) print(stuff) mean(stuff) sd(stuff) sapply(stuff, length) sapply(stuff, mean) sapply(stuff, sd) getwd() ls() ls options() history() history(max.show=Inf)