rownames, colnames lost after applying roll_* function

[mahl]

rownames, colnames lost after applying roll_* function on matrix.

[kevinushey]

Thanks; I'll take a look at this.

[kevinushey]

Column names are now preserved, but I'm not sure what the right way to propagate row names here is exactly. For example:

library(RcppRoll)
m <- matrix(1:16, nrow = 4)
rownames(m) <- letters[1:4]
colnames(m) <- LETTERS[1:4]
m
#>   A B  C  D
#> a 1 5  9 13
#> b 2 6 10 14
#> c 3 7 11 15
#> d 4 8 12 16
roll_mean(m, 3)
#>      A B  C  D
#> [1,] 2 6 10 14
#> [2,] 3 7 11 15

What row names should be applied in this case? Do we carry forward the first row names ('a' and 'b')? Does it depend on alignment / fill?