Subsetting row in single column matrix drops names in resulting vector

Hello,

Use drop = FALSE.

a[1, , drop = FALSE]
#     col1
#row1    1


Hope this helps,

Rui Barradas

?s 16:51 de 21/11/2018, Dmitriy Selivanov escreveu:

Hello here. I'm struggling to understand R's subsetting behavior in

couple

of edge cases - subsetting row in a single column matrix and subsetting
column in a single row matrix. I've read R's docs several times and

haven't

found answer.

Consider following example:

a = matrix(1:2, nrow = 2, dimnames = list(c("row1", "row2"), c("col1")))
a[1, ]
# 1

It returns *unnamed* vector `1` where I would expect named vector. In

fact

it returns named vector when number of columns is > 1.
Same issue applicable to single row matrix. Is it a bug? looks very
counterintuitive.