R: Examples for 'reshape::melt.array'

### ** Examples
a <- array(1:24, c(2,3,4))
melt(a)

   X1 X2 X3 value
1   1  1  1     1
2   2  1  1     2
3   1  2  1     3
4   2  2  1     4
5   1  3  1     5
6   2  3  1     6
7   1  1  2     7
8   2  1  2     8
9   1  2  2     9
10  2  2  2    10
11  1  3  2    11
12  2  3  2    12
13  1  1  3    13
14  2  1  3    14
15  1  2  3    15
16  2  2  3    16
17  1  3  3    17
18  2  3  3    18
19  1  1  4    19
20  2  1  4    20
21  1  2  4    21
22  2  2  4    22
23  1  3  4    23
24  2  3  4    24

melt(a, varnames=c("X","Y","Z"))

   X Y Z value
1  1 1 1     1
2  2 1 1     2
3  1 2 1     3
4  2 2 1     4
5  1 3 1     5
6  2 3 1     6
7  1 1 2     7
8  2 1 2     8
9  1 2 2     9
10 2 2 2    10
11 1 3 2    11
12 2 3 2    12
13 1 1 3    13
14 2 1 3    14
15 1 2 3    15
16 2 2 3    16
17 1 3 3    17
18 2 3 3    18
19 1 1 4    19
20 2 1 4    20
21 1 2 4    21
22 2 2 4    22
23 1 3 4    23
24 2 3 4    24

dimnames(a) <- lapply(dim(a), function(x) LETTERS[1:x])
melt(a)

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

   X1 X2 X3 value
1   A  A  A     1
2   B  A  A     2
3   A  B  A     3
4   B  B  A     4
5   A  C  A     5
6   B  C  A     6
7   A  A  B     7
8   B  A  B     8
9   A  B  B     9
10  B  B  B    10
11  A  C  B    11
12  B  C  B    12
13  A  A  C    13
14  B  A  C    14
15  A  B  C    15
16  B  B  C    16
17  A  C  C    17
18  B  C  C    18
19  A  A  D    19
20  B  A  D    20
21  A  B  D    21
22  B  B  D    22
23  A  C  D    23
24  B  C  D    24

melt(a, varnames=c("X","Y","Z"))

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

   X Y Z value
1  A A A     1
2  B A A     2
3  A B A     3
4  B B A     4
5  A C A     5
6  B C A     6
7  A A B     7
8  B A B     8
9  A B B     9
10 B B B    10
11 A C B    11
12 B C B    12
13 A A C    13
14 B A C    14
15 A B C    15
16 B B C    16
17 A C C    17
18 B C C    18
19 A A D    19
20 B A D    20
21 A B D    21
22 B B D    22
23 A C D    23
24 B C D    24

dimnames(a)[1] <- list(NULL)
melt(a)

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

Warning in type.convert.default(X[[i]], ...): 'as.is' should be specified by
the caller; using TRUE

   X1 X2 X3 value
1   1  A  A     1
2   2  A  A     2
3   1  B  A     3
4   2  B  A     4
5   1  C  A     5
6   2  C  A     6
7   1  A  B     7
8   2  A  B     8
9   1  B  B     9
10  2  B  B    10
11  1  C  B    11
12  2  C  B    12
13  1  A  C    13
14  2  A  C    14
15  1  B  C    15
16  2  B  C    16
17  1  C  C    17
18  2  C  C    18
19  1  A  D    19
20  2  A  D    20
21  1  B  D    21
22  2  B  D    22
23  1  C  D    23
24  2  C  D    24

Examples for 'reshape::melt.array'

Melt an array