[R-es] ceiling con max duplica tamaño matriz

[Sebastian Kruk]

Estimados,

Tengo:
v1
v_DEM_i_d_m

Donde

>IN_ES_NUM = 469

>v1 = 1:IN_ES_NUM

> head(v_DEM_i_d_m)
            Mes 1        Mes 2        Mes 3        Mes 4        Mes 5
      Mes 6        Mes 7        Mes 8        Mes 9       Mes 10
Mes 11       Mes 12
ES 1  7.811032258  8.982678571  9.563935484  8.411500000  7.788354839
8.976933333  9.517419355  8.902258065  9.328600000  9.391096774
9.866800000 10.317838710
ES 2  0.641419355  1.174714286  1.353838710  1.299900000  1.387096774
0.905033333  1.140935484  0.880387097  1.237766667  1.292677419
1.327166667  1.387838710
ES 3  0.003225806  0.003571429  0.003225806  0.003333333  0.003225806
0.003333333  0.003225806  0.003225806  0.003333333  0.003225806
0.003333333  0.003483871
ES 4 13.475258065 13.240285714 15.168838710 11.492233333 12.792774194
12.989566667 14.996064516 12.911774194 13.835400000 14.635612903
14.541266667 15.206000000
ES 5 18.711258065 23.263535714 24.875967742 23.478000000 27.372548387
27.509800000 28.649096774 26.986935484 33.831833333 20.810419355
24.669400000 25.797096774
ES 6 16.112419355 17.903678571 18.250548387 16.712066667 17.353741935
17.137233333 18.501000000 17.613258065 19.115766667 20.773354839
20.990566667 21.950096774

> class((v_DEM_i_d_m))
[1] "matrix" "array"

> str(v_DEM_i_d_m)
 num [1:469, 1:12] 7.81103 0.64142 0.00323 13.47526 18.71126 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:469] "ES 1" "ES 2" "ES 3" "ES 4" ...
  ..$ : chr [1:12] "Mes 1" "Mes 2" "Mes 3" "Mes 4" ...

Si hago:

for (i in idx_epsilon) {
v1[i] = ceiling(max(v_DEM_i_d_m[i,]))
}

v1 queda así:

> head(v1)

1 2 3 4 5 6

> class(v1)
[1] "numeric"

> str(v1)
 Named num [1:938] 1 2 3 4 5 6 7 8 9 10 ...
 - attr(*, "names")= chr [1:938] "" "" "" "" ...

No entiendo porque los primeros 469 son los números de 1 a 469.

¿Que estoy haciendo mal?

Saludos,

Sebastián.