R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> x <- c(browser
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Chrome'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'Safari'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Opera'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'Safari'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Safari'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Chrome'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Safari'
+ ,'Safari'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Safari'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Safari'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Safari'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Firefox'
+ ,'MSIE'
+ ,'Safari'
+ ,'Safari'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Chrome'
+ ,'MSIE'
+ ,'Firefox'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'Firefox'
+ ,'Safari'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE'
+ ,'MSIE')
> par4 = 'Unknown'
> par3 = 'FALSE'
> par2 = 'grey'
> par1 = ''
> xlab = 'x'
> main = 'Histogram'
> par4 <- 'Unknown'
> par3 <- 'FALSE'
> par2 <- 'grey'
> par1 <- ''
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: root
> #To cite this work: Wessa P., (2012), Histogram (v1.0.12) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_histogram.wasp/
> #Source of accompanying publication: 
> #
> par1 <- as.numeric(par1)
> if (par3 == 'TRUE') par3 <- TRUE
> if (par3 == 'FALSE') par3 <- FALSE
> if (par4 == 'Unknown') par1 <- as.numeric(par1)
> if (par4 == 'Interval/Ratio') par1 <- as.numeric(par1)
> if (par4 == '3-point Likert') par1 <- c(1:3 - 0.5, 3.5)
> if (par4 == '4-point Likert') par1 <- c(1:4 - 0.5, 4.5)
> if (par4 == '5-point Likert') par1 <- c(1:5 - 0.5, 5.5)
> if (par4 == '6-point Likert') par1 <- c(1:6 - 0.5, 6.5)
> if (par4 == '7-point Likert') par1 <- c(1:7 - 0.5, 7.5)
> if (par4 == '8-point Likert') par1 <- c(1:8 - 0.5, 8.5)
> if (par4 == '9-point Likert') par1 <- c(1:9 - 0.5, 9.5)
> if (par4 == '10-point Likert') par1 <- c(1:10 - 0.5, 10.5)
> postscript(file="/var/fisher/rcomp/tmp/1tvyd1380894680.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> if(is.numeric(x[1])) {
+ if (is.na(par1)) {
+ myhist<-hist(x,col=par2,main=main,xlab=xlab,right=par3)
+ } else {
+ if (par1 < 0) par1 <- 3
+ if (par1 > 50) par1 <- 50
+ myhist<-hist(x,breaks=par1,col=par2,main=main,xlab=xlab,right=par3)
+ }
+ } else {
+ plot(mytab <- table(x),col=par2,main='Frequency Plot',xlab=xlab,ylab='Absolute Frequency')
+ }
Error in unique.default(x, nmax = nmax) : 
  unique() applies only to vectors
Calls: plot -> table -> factor -> unique -> unique.default
Execution halted