I have never used this construct. However, part of my job is seeing how
well CRAN packages work in our reimplementation of the R language
and I am continually surprised by the inventiveness of package writers.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Jan 4, 2018 at 1:44 PM, Ben Bolke
> On Jan 4, 2018, at 1:44 PM, Ben Bolker wrote:
>
> Chuck: I don't see how this example represents
> incomplete/incommensurate recycling.
It doesn't. I took your subject line to be the theme of your posting and
`incommensurate lengths' to be an instance used to emphasize how silent
recycli
PS I'm tempted to insert a warning at this point and see how often it
actually gets triggered ...
On Thu, Jan 4, 2018 at 4:44 PM, Ben Bolker wrote:
> Hmm.
>
> Chuck: I don't see how this example represents
> incomplete/incommensurate recycling. Doesn't TRUE replicate from
> length-1 to length-3 i
Hmm.
Chuck: I don't see how this example represents
incomplete/incommensurate recycling. Doesn't TRUE replicate from
length-1 to length-3 in this case (mat[c(TRUE,FALSE),2] would be an
example of incomplete recycling)?
William: clever, but maybe too clever unless you really need the
speed? (The c
> On Jan 4, 2018, at 11:56 AM, Ben Bolker wrote:
>
>
> Sorry if this has been covered here somewhere in the past, but ...
>
> Does anyone know why logical vectors are *silently* recycled, even
> when they are incommensurate lengths, when doing logical indexing?
It is convenient to use a s
One use case is when you want to extract every third item, starting with
the second, of an arbitrary vector with
x[c(FALSE, TRUE, FALSE)]
instead of
x[seq_along(x) %% 3 == 2]
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Jan 4, 2018 at 11:56 AM, Ben Bolker wrote:
>
> Sorry if t
