[R] Blanking out specific cells in a data frame

[Sabatier, Jennifer F. (CDC/OID/NCHHSTP)]

Hi R-Help,

I am a new R user.  I have used SAS for many years (just FYI on what I
am used to and possible obstacles it presents).

I have a data frame:

mydf <-data.frame(matrix(rnorm(102), ncol=6)

I would like to be able to delete ALL the information in column 6 for
rows 2 through r, where r=#rows.

How can I do that?

I want the resulting data frame to look like this:

X1	X2	X3	X4	X5	X6
Data	data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data
Data	data	data	data	data


(Sorry for using the word "data" and not having a cut and paste of my
actual data frame...the computer I am writing this email on does not
have R so I have to improvise.)

Thanks,

Jen