Dear R help group: I am attempting to produce a density plot from a list of
20000 values using the density.lf function and would appreciate any help, I
hope I have done my homework reading the documentation but I still seem to
be missing something basic.

I have read the data as a table using read.table, with header=TRUE (I
excluded 2000 values), when calling the objects it appears to be there and
I can see the values

this is what I get when doing

density.lf (x=logN0, n=50, window="gaussian")

Error in `[.data.frame`(x, order(x, na.last = na.last, decreasing =
decreasing)) :

  undefined columns selected

then assigned a column name (using colname so it is called first), then
assigned it as a vector using

assign ("x", c (logN0))


the error I get is


density.lf (x, n=50, window="gaussian")

Error in sort.int(x, na.last = na.last, decreasing = decreasing, ...) :

  'x' must be atomic


the traceback produces:

> traceback ()

5: stop("'x' must be atomic")

4: sort.int(x, na.last = na.last, decreasing = decreasing, ...)

3: sort.default(x)

2: sort(x)

1: density.lf(x, n = 50, window = "gaussian")


Thanks in advance, Andrea

-- 
Andrea Sequeira
Associate Professor
Department of Biological Sciences
Wellesley College, Wellesley MA 02481

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