Sets row names in a way that is amenable to use in piping operations in a functional programming way.
If a is NULL, NULL is returned.
If a is a constant, it is converted to a matrix and rownames are applied.
If a is a matrix, rownames should be a vector of new row names
that is as long as the number of rows in a.
If a is a list of matrices,
rownames can also be a list, and it should be as long a.
Or rownames can be a vector of row names which will be applied to every matrix in
the list of a.
Each item in the list should be a vector containing row names for the corresponding
matrix in a.
Arguments
- a
A matrix or a list of matrices in which row names are to be set
- rownames
A vector of new row names or a list of vectors of new row names
Examples
library(dplyr)
m <- matrix(c(1:6), nrow = 2, dimnames = list(paste0("i", 1:2), paste0("c", 1:3))) %>%
setrowtype("Industries") %>% setcoltype("Commodities")
setrownames_byname(m, c("a", "b"))
#> c1 c2 c3
#> a 1 3 5
#> b 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
setrownames_byname(m %>% setrowtype("Industries") %>% setcoltype("Commodities"), c("c", "d"))
#> c1 c2 c3
#> c 1 3 5
#> d 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
m %>% setrownames_byname(NULL)
#> c1 c2 c3
#> [1,] 1 3 5
#> [2,] 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
m %>% setrownames_byname(c(NA, NA))
#> c1 c2 c3
#> <NA> 1 3 5
#> <NA> 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
2 %>% setrownames_byname("row")
#> [,1]
#> row 2
# This also works for lists
setrownames_byname(list(m,m), list(c("a", "b")))
#> [[1]]
#> c1 c2 c3
#> a 1 3 5
#> b 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
#> [[2]]
#> c1 c2 c3
#> a 1 3 5
#> b 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
DF <- data.frame(m = I(list()))
DF[[1,"m"]] <- m
DF[[2,"m"]] <- m
setrownames_byname(DF$m, list(c("r1", "r2")))
#> [[1]]
#> c1 c2 c3
#> r1 1 3 5
#> r2 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
#> [[2]]
#> c1 c2 c3
#> r1 1 3 5
#> r2 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
setrownames_byname(DF$m, list(c("c", "d")))
#> [[1]]
#> c1 c2 c3
#> c 1 3 5
#> d 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
#> [[2]]
#> c1 c2 c3
#> c 1 3 5
#> d 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"
#>
DF <- DF %>% mutate(m = setrownames_byname(m, list(c("r1", "r2"))))
DF$m[[1]]
#> c1 c2 c3
#> r1 1 3 5
#> r2 2 4 6
#> attr(,"rowtype")
#> [1] "Industries"
#> attr(,"coltype")
#> [1] "Commodities"