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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)}######################################################################## heading - take a string and print it out with underline# Useful for formatting output text files#headingFunc <- function(string, ul='=', caps=T){ if(length(string) != 1) string <- 'Error in headingFunc' if(class(string) != 'character') string <- as.character(string) if(caps) string <- toupper(string) cat('\n', string, '\n', sep='') reps <- floor(nchar(string) / nchar(ul)) filler <- substr(ul, 1, (nchar(string) %% nchar(ul))) cat(rep(ul, reps), filler, '\n\n', sep='')}############ handy for debugging ############################################################################################################# unWarn - set options()unWarn <- function() options( warn = -1)######################################################################## Warn - set options()warn <- function() options( warn = 0)######################################################################## sort of created by mistake when Joe typed htail# prints the head and tail of a datframe or array.# -- separates head from tail with a row of '...' (can be buggy)# you can pass in lengths for head and tail if you want to.htail <- function(x, min_obs=15, ...){ if(dim(x)[1] < min_obs) return(x) hd <- head(x, ...) tl <- tail(x, ...) dots <- rep('...', ncol(x)) res <- rbind(hd, '...'=dots, tl) return(res)}######################################################################## 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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