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Thanks to all who replied. On Mon, 6 Nov 2023 at 18:37, Richard O'Keefe <raoknz at gmail.com> wrote: > OK, so the consensus is > (1) One cannot make strptime accept ISO8601-compliant zone designators > (2) The lubridate package can > (3) Or one can hack away with regex. > Lubridate it is, then. > > But I do regard strptime's inability to process IS...

>>>>> Richard O'Keefe >>>>> on Mon, 6 Nov 2023 18:37:34 +1300 writes: > Thanks to all who replied. On Mon, 6 Nov 2023 at 18:37, > Richard O'Keefe <raoknz at gmail.com> wrote: >> OK, so the consensus is (1) One cannot make strptime >> accept ISO8601-compliant zone designators (2) The >> lubridate package can (3) Or one can hack away with >> regex. Lubridate it is, then. >> >> But I do...

...5:00 UTC" > > > > > > > Thanks > > Jim Holtman > *Data Munger Guru* > > > *What is the problem that you are trying to solve?Tell me what you want to > do, not how you want to do it.* > > > On Sun, Nov 5, 2023 at 3:45?PM Richard O'Keefe <raoknz at gmail.com> wrote: > >> I have some data that includes timestamps like this: >> 2017-02-28T13:35:00+03:00 >> The documentation for strptime says that %z expects >> an offset like 0300. I don't see any way in the documentation >> to get it to accept +hh:mm...

I have some data that includes timestamps like this: 2017-02-28T13:35:00+03:00 The documentation for strptime says that %z expects an offset like 0300. I don't see any way in the documentation to get it to accept +hh:mm with a colon separator, and everything I tried gave me NA as the answer. Section 4.2.5.1 of ISO 8601:2004(E) allows both the absence of colons in +hh[mm] (basic format) and

...2017-02-28T13:35:00+03:00"> ymd_hms(x)[1] "2017-02-28 10:35:00 UTC" > Thanks Jim Holtman *Data Munger Guru* *What is the problem that you are trying to solve?Tell me what you want to do, not how you want to do it.* On Sun, Nov 5, 2023 at 3:45?PM Richard O'Keefe <raoknz at gmail.com> wrote: > I have some data that includes timestamps like this: > 2017-02-28T13:35:00+03:00 > The documentation for strptime says that %z expects > an offset like 0300. I don't see any way in the documentation > to get it to accept +hh:mm with a colon separator,...

> On Jun 6, 2019, at 2:04 PM, Richard O'Keefe <raoknz at gmail.com> wrote: > > How can expanding tildes anywhere but the beginning of a file name NOT be > considered a bug? > > I think that that IS what libreadline is doing if one allows a whitespace separated list of file names. As reported in R-help, https://www.mail-archiv...

...e for basic operations like vector/matrix, etc. construction to do so. When this is not possible, I suspect "optimal" efficient strategies for allocating space to build objects gets you into the weeds of how R works. Cheers, Bert On Sat, Mar 2, 2024 at 1:02?AM Richard O'Keefe <raoknz at gmail.com> wrote: > > The matrix equivalent of > x <- ... > v <- ... > x[length(x)+1] <- v > is > m <- ... > r <- ... > m <- rbind(m, r) > or > m <- ... > k <- ... > m <- cbind(m, c) > > A vector or matr...

R *does* search the environment stack. > search() [1] ".GlobalEnv" "package:stats" "package:graphics" [4] "package:grDevices" "package:utils" "package:datasets" [7] "package:methods" "Autoloads" "package:base What you seem to be missing is that a package may contain bindings that it

?ifelse 'ifelse' returns a value with the same shape as 'test' which is filled with elements selected from either 'yes' or 'no' depending on whether the element of 'test' is 'TRUE' or 'FALSE'. This is actually rather startling, because elsewhere in the S (R) language, operands are normally replicated to the length of the longer.

...nd() when it *should*, to be consistent with the documentation, be calling tilde_expand_word(). as separate elements of the character vector. On Sat, 8 Jun 2019 at 04:10, Berry, Charles <ccberry at ucsd.edu> wrote: > > > > On Jun 6, 2019, at 2:04 PM, Richard O'Keefe <raoknz at gmail.com> wrote: > > > > How can expanding tildes anywhere but the beginning of a file name NOT be > > considered a bug? > > > > > > I think that that IS what libreadline is doing if one allows a whitespace > separated list of file names. > > As r...

I am more than a little puzzled by your question. In the construct {expr1; expr2; expr3} all of the expressions expr1, expr2, and expr3 are evaluated, in that order. That's what curly braces are FOR. When you want some expressions evaluated in a specific order, that's why and when you use curly braces. If that's not what you want, don't use them. Complaining about it is like

...n, > be calling tilde_expand_word(). > > > > as separate elements of the character vector. > > > > On Sat, 8 Jun 2019 at 04:10, Berry, Charles <ccberry at ucsd.edu> wrote: > >> >> >>> On Jun 6, 2019, at 2:04 PM, Richard O'Keefe <raoknz at gmail.com> wrote: >>> >>> How can expanding tildes anywhere but the beginning of a file name NOT be >>> considered a bug? >>> >>> >> >> I think that that IS what libreadline is doing if one allows a whitespace >> separated list of...

...any people like packages such as in the tidyverse because they manage to make some changes, for better and often for verse. -----Original Message----- From: R-help <r-help-bounces at r-project.org> On Behalf Of Sorkin, John Sent: Sunday, January 15, 2023 8:08 PM To: Richard O'Keefe <raoknz at gmail.com>; Valentin Petzel <valentin at petzel.at> Cc: R help Mailing list <r-help at r-project.org> Subject: Re: [R] return value of {....} Richard, I sent my prior email too quickly: A slight addition to your code shows an important aspect of R, local vs. global variables: x...

Dear Rich, It depends how the data is generated. Although I am not an expert in ecology, I can explain it based on a biomedical example. Certain variables are generated geometrically (exponentially), e.g. MIC or Titer. MIC = Minimum Inhibitory Concentration for bacterial resistance Titer = dilution which still has an effect, e.g. serially diluting blood samples; Obviously, diluting the

...spect of R, local vs. global variables: x <- 137 f <- function () { a <- x x <- 42 b <- x list(a=a, b=b) } f() print(x) ________________________________________ From: R-help <r-help-bounces at r-project.org> on behalf of Richard O'Keefe <raoknz at gmail.com> Sent: Sunday, January 15, 2023 6:39 PM To: Valentin Petzel Cc: R help Mailing list Subject: Re: [R] return value of {....} I wonder if the real confusino is not R's scope rules? (begin .) is not Lisp, it's Scheme (a major Lisp dialect), and in Scheme, (begin (define x ...)...

...spect of R, local vs. global variables: x <- 137 f <- function () { a <- x x <- 42 b <- x list(a=a, b=b) } f() print(x) ________________________________________ From: R-help <r-help-bounces at r-project.org> on behalf of Richard O'Keefe <raoknz at gmail.com> Sent: Sunday, January 15, 2023 6:39 PM To: Valentin Petzel Cc: R help Mailing list Subject: Re: [R] return value of {....} I wonder if the real confusino is not R's scope rules? (begin .) is not Lisp, it's Scheme (a major Lisp dialect), and in Scheme, (begin (define x ...)...

The matrix equivalent of x <- ... v <- ... x[length(x)+1] <- v is m <- ... r <- ... m <- rbind(m, r) or m <- ... k <- ... m <- cbind(m, c) A vector or matrix so constructed never has "holes" in it. It's better to think of CONSTRUCTING vectors and matrices rather than INITIALISING them, because always being fully defined is important. It

I wonder if the real confusino is not R's scope rules? (begin .) is not Lisp, it's Scheme (a major Lisp dialect), and in Scheme, (begin (define x ...) (define y ...) ...) declares variables x and y that are local to the (begin ...) form, just like Algol 68. That's weirdness 1. Javascript had a similar weirdness, when the ECMAscript process eventually addressed. But the real

What do you *mean* "when you want to use the kernels". WHICH kernels? Use to do WHAT? In your browser, visit cran.r-project.org then select "Packages" from the list on the left. Then pick the alphabetic list. Now search for 'kernel'. You will find dozens of matches. On Wed, 14 Oct 2020 at 05:15, PIKAL Petr <petr.pikal at precheza.cz> wrote: > Hm. Google tells

Hm. Google tells me that kernel function is in stats package which comes with base installation and is invoked when you start R. search() [1] ".GlobalEnv" "package:stats" "package:graphics" [4] "package:grDevices" "package:utils" "package:datasets" [7] "package:methods" "Autoloads"