as.character(NA) |> rep(times = 10) |> summary()
vs.
as.numeric(NA) |> rep(times = 10) |> summary()
This feels inconsistent, doesn't it?
I constantly need to count missing characters in some data.frame columns.
It would be helpful if summary() can do that. Thanks.
Sincerely,
Yifan Liu
[
Hi, Gabor et al.:
Thanks for this. I should change my current application to use either
zoo or xts, as Gabor suggests.
However, I was surprised to learn that "[.ts" does NOT return an
object of class "ts". I see that "head.default" and "head.matrix" both
call "[", so "head" cannot re
> Date: Sat, 8 Jun 2024 19:16:22 -0400
> From: Ben Bolker
>
> The ASAN errors occur *even if the zero-length object is not actually
> accessed*/is used in a perfectly correct manner, i.e. it's perfectly
> legal in base R to define `m <- numeric(0)` or `m <- matrix(nrow
> Spencer Graves
> on Mon, 10 Jun 2024 07:50:13 -0500 writes:
> Hi, Gabor et al.: Thanks for this. I should change my
> current application to use either zoo or xts, as Gabor
> suggests.
> However, I was surprised to learn that "[.ts" does NOT
> return an obj
Hi, Martin et al.:
On 6/10/24 9:32 AM, Martin Maechler wrote:
Spencer Graves
on Mon, 10 Jun 2024 07:50:13 -0500 writes:
> Hi, Gabor et al.: Thanks for this. I should change my
> current application to use either zoo or xts, as Gabor
> suggests.
> However, I
Thanks, that's very useful.
AFAICT, in the problematic case we are doing some linear algebra with
zero-column matrices that are mathematically well-defined (and whose
base-R equivalents work correctly). It's maybe not surprising that
Eigen/RcppEigen would do some weird stuff in this edge c
