No redundant combination expand grid

outer( c("aa", "ab", "cc"), c("aa", "ab", "cc") , "paste" )
#     [,1]    [,2]    [,3]   
#[1,] "aa aa" "aa ab" "aa cc"
#[2,] "ab aa" "ab ab" "ab cc"
#[3,] "cc aa" "cc ab" "cc cc"

Source: stackoverflow.com

Similar codes

0 vote150 views1 answer
Replace_na
R
0 vote146 views1 answer
How to select certain rows containing a word in r
R
0 vote144 views1 answer
Ways to examine model in r
R
1 vote140 views1 answer
Show factor levels in r
R
0 vote149 views1 answer
Null count in r
R
0 vote141 views3 answers
Del row matrix r
R
0 vote143 views2 answers
Animated bar chart race in r
R
3 votes204 views3 answers
Rename variables in r
R
0 vote156 views1 answer
Significance codes
R
1 vote156 views1 answer
Size of ticks labels in r ggplot
R