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######################################################################## clean a path and unlist it (for setDir())# - expects Windows backslashes '\'cleanPath <- function(filename = choose.files()){ x <- gsub('\\\\','/', filename) # nice easy way to find and clean the path y <- (gregexpr('/', x)) # vector of positions of / return(list(path=x, pos=y))}######################################################################## takes CleanPath() output as arg, returns just the filenamejustFile <- function(x) { pos <- unlist(x$pos) pos <- pos[length(pos)] fname <- substring(x$path, pos+1, nchar(x$path)) return(fname)}######################################################################## this one allows you to use shortcuts (nicer file picker)setDir <- function(){ x <- cleanPath() # list of path + filename y <- x$pos[length(x$pos)] # just the last one y <- substring(x$path, 1, y-1) # the directory! setwd(y) print(sprintf('working Dir set to %s', getwd())) return(y)}######################################################################## yymmdd date formatyymmdd <- function(thisDate = Sys.Date()){ return(format(thisDate, '%y%m%d'))}######################################################################## creates a new subdirectory, defaulting to the current date# - subdirectory of a directory called 'plot'# - So if you are creating lots of plots they are collected by dateplotDir <- function(pdir = 'plot', ...){ plot_dir <- paste(pdir, '/', yymmdd(...), sep='') dir.create(plot_dir, rec=T) return(plot_dir)}######################################################################## nukem - erase all objects (after asking nicely)nukem <- function(){ x <- readline ("\n\tErase all objects? (Y)") if (tolower(substr(x, 1, 1)) != "n") {rm(list=ls(all=TRUE))}# NUKE all objects else {print("Nothing was changed.")}}
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