Creating vegetation distance groups from one column

Hi, 

I have tried the script posted but received the following errors.  I hope I
copied it correctly. I'm sorry but I don't know how to alter the script
myself.
Please advise, Jean

x <- 0:30 + runif(124)
data.to.analyze$VegIndex <- cut(x, breaks = seq(0, 35, 5))

Error in `$<-.data.frame`(`*tmp*`, "VegIndex", value = c(1L, 1L, 1L, 1L,  : 
  replacement has 124 rows, data has 123

l <- levels(data.to.analyze$VegIndex)
l1 <- sub("\\]", ")", l[1])
l2 <- as.numeric(sub("\\(([[:digit:]]+),.*", "\\1", l[-1])) + 1
l3 <- sub(".*,([[:digit:]]+).*", "\\1", l[-1])
l.new <- c(l1, paste0("(",l2,",",l3, ")"))

Error: could not find function "paste0"

levels(data.to.analyze$VegIndex) <- l.new

Error: object 'l.new' not found

str(data.to.analyze$VegIndex)

NULL

barplot(table(data.to.analyze$VegIndex))

Error in plot.window(xlim, ylim, log = log, ...) : 
  need finite 'xlim' values
In addition: Warning messages:
1: In min(w.l) : no non-missing arguments to min; returning Inf
2: In max(w.r) : no non-missing arguments to max; returning -Inf
3: In min(x) : no non-missing arguments to min; returning Inf
4: In max(x) : no non-missing arguments to max; returning -Inf



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