unique combinations

OK, someone point it out to me; my wife tells me I can't see what's in front
of me :-}

I read ?expand.grid carefully, went to ?combn and ?choose but still couldn't
see an easy way to get what the OP asked for. The neatest I can get (which
isn't very neat!) is:

myVec<- c(1,2,3)
eg<- expand.grid(myVec, myVec)
eg[eg[,1]<= eg[,2],]

   Var1 Var2
1    1    1
4    1    2
5    2    2
7    1    3
8    2    3
9    3    3

What am I missing?

Best regards,

KJ
"Jeff Newmiller"<jdnewmil at dcn.davis.ca.us>  wrote in message
news:80cc9ff9-d867-4dfc-b6e3-9c1df782209a at email.android.com...

You could read the help for expand.grid very carefully for the answer to
this question.
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Antje Niederlein<niederlein-rstat at yahoo.de>  wrote:

Hi there,

I have a vector and would like to create a data frame, which contains
all unique combination of two elements, regardless of order.

myVec<- c(1,2,3)

what expand.grid does:

1,1
1,2
1,3
2,1
2,2
2,3
3,1
3,2
3,3

what I would like to have

1,1
1,2
1,3
2,2
2,3
3,3

Can anybody help?