[Rd] Errors in demo (PR#10527)

[rcwright at texas.net]

Full_Name: richard wright
Version: R version 2.6.1 (2007-11-26)
OS: Mac OS X v 10.4.11
Submission from: (NULL) (76.240.79.123)


I downloaded the most recent version of  R for the mac (About: GUI 1.22-devel
(4859) (4859)) and installed it.
After installation, I opened the help file and ran the demo. I am new to R,
although I have over 25 years experience in SAS.

Below is a part of the job I ran. I think I ran the code correctly, but I seem
to be blowing off.
And, I'm not sure it's related, but I also included what I got when I ran
bug.report()

> dummy <- data.frame(x=x, y =x+rnorm(x)*w)
> dummy
    x         y
1   1  1.425904
2   2 -1.083024
3   3 -1.976215
4   4  4.185795
5   5  8.598591
6   6  1.004177
7   7  5.357826
8   8  9.033184
9   9  6.455373
10 10  8.166066
11 11 12.383454
12 12 10.823910
13 13 14.410394
14 14 13.046184
15 15 15.912303
16 16 13.454527
17 17 15.827133
18 18 18.586979
19 19 10.845216
20 20 20.935347
> fm <-lm(y-x,data=dummy)
Error in switch(mode(x), "NULL" = structure(NULL, class = "formula"),  : 
  invalid formula
In addition: Warning message:
In y - x : longer object length is not a multiple of shorter object length
> ls()
[1] "dummy" "w"     "x"     "y"    
> bug.report()
Error in bug.report() : 'subject' missing
>