Hello,

Hosack, Michael wrote:
Hello,

I need to create a dataframe containing all possible combinations of
three variables: SITE (101,102,103,104), WDAY (MON,TUE,WED,THR,FRI),
and TOD (MORN, AFTN). There should be a total of 40 unique
combinations in my dataframe. I used expand.grid() successfully(?) to
create my dataframe, but then when I went to order it by SITE, the
resultant dataframe only contained four rows, one for each site.
There must be something about this function that I don't understand.
Any advice would be appreciated.

I don't know what you see, since you don't provide reproducible code. I cannot reproduce what you saw.

tmp <- expand.grid(site = c(101,102,103,104),
                   wday = c("MON","TUE","WED","THR","FRI"),
                   tod  = c ("MORN", "AFTN"))

tmp[order(tmp$site),]

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