Hi
The following code results in an error:
###########
> x <- data.frame(x = integer(0), y = integer(0))
> x == x
Error in matrix(if (is.null(value)) logical() else value, nrow = nr, dimnames =
list(rn, :
length of 'dimnames' [2] not equal to array extent
>
###########
I would expect that it returns logical(0) as both have the same structure and
both are empty, or even TRUE?
But definitely not an error.
Cheers,
Rainer
###########
> sessionInfo()
R version 3.6.1 (2019-07-05)
Platform: x86_64-apple-darwin17.7.0 (64-bit)
Running under: macOS High Sierra 10.13.6
Matrix products: default
BLAS:
/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK:
/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_3.6.1
###########
--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys. (Germany)
Orcid ID: 0000-0002-7490-0066
Department of Evolutionary Biology and Environmental Studies
University of Zürich
Office Y34-J-74
Winterthurerstrasse 190
8075 Zürich
Switzerland
Office: +41 (0)44 635 47 64
Cell: +41 (0)78 630 66 57
email: rainer.k...@uzh.ch
rai...@krugs.de
Skype: RMkrug
PGP: 0x0F52F982
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