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dear r experts---Is there a multicore equivalent of by(), just like mclapply() is the multicore equivalent of lapply()? if not, is there a fast way to convert a data.table into a list based on a column that lapply and mclapply can consume? advice appreciated...as always. regards, /iaw ---- Ivo Welch (ivo.welch at gmail.com)

...to do, in pseudo R+perl notation is f <- function(a,b) list(a+b,a-b) (c,d) <- f(1,2) and have c be assigned 1+2 and d be assigned 1-2. right now, I use the clunky x <- f(1,2) c <- x[[1]] d <- x[[2]] rm(x) which seems awful. is there a nicer syntax? regards, /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)

On Fri, 27 Jan 2023 at 20:42, Diogo Ivo <diogo.ivo at tecnico.ulisboa.pt> wrote: > > On Fri, Jan 27, 2023 at 04:00:59PM +1000, Ben Skeggs wrote: > > On Fri, 20 Jan 2023 at 21:37, Diogo Ivo <diogo.ivo at tecnico.ulisboa.pt> wrote: > > > > > > On Wed, Jan 18, 2023 at 11:28:49AM +1000, Ben Skeggs wr...

...Product: Portable OpenSSH Version: 6.8p1 Hardware: All OS: Solaris Status: NEW Severity: enhancement Priority: P5 Component: Miscellaneous Assignee: unassigned-bugs at mindrot.org Reporter: ivo.raisr at oracle.com Created attachment 2739 --> https://bugzilla.mindrot.org/attachment.cgi?id=2739&action=edit the proposed patch getaddrinfo() in several places around OpenSSH results in a name service (DNS) queury. For the detailed list, see below. On Solaris, when the address family...

...Or, I can compute (X' X)^(-1) s^2 myself. Has someone written a fast se() function? incidentally, I think this would make a nice addition to the R base. I presume it is not uncommon for a statistician also to want to use the se of coef estimates. pointers appreciated. regards, /iaw ---- Ivo Welch (ivo.welch@brown.edu, ivo.welch@gmail.com) [[alternative HTML version deleted]]

is it possible to throw a stop() that is so hard that it will escape even tryCatch? /iaw ---- Ivo Welch (ivo.welch at gmail.com)

Hi there, As I could not find a direct maintainer email address, I'm sending this to the mailing list. SysLinux, being a GPL product, is being sold under a very restrictive license without even offering the sources to the public. I've written up my findings here: http://www.palli.nl/~ivo/rdp/ Please have a look for yourself. Regards, Ivo Palli

...m; and another categorization for importance (e.g., like "common" for lm and "obscure" for ..). Such categorizations require intelligence. if I am going to do this for myself, I think a csv spreadsheet may be a good idea to make it easy to resort by keys. regards, /iaw ---- Ivo Welch (ivo.welch@gmail.com) [[alternative HTML version deleted]]

Please compare samples: http://www.ivo.pl/ivo2/sound/krwawa_org.wav http://www.ivo.pl/ivo2/sound/krwawa_fixed.wav http://www.ivo.pl/ivo2/sound/krwawa_float.wav krwawa_org.wav is original file. Both output files was created using same program by compressing from wav to speex, then decompressing from speex to wav (using speex_encode_int...

...variables). Let's presume one of the y variables contains only NA's. I believe I now cannot use lm(y ~ X), because one of the regressions will throw the lm.fit exception. (all the other y vectors should have worked.) or is there a way to get lm() to work in such situations? /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)

...ds (real and user, using the unix timing function). "do-onecore" takes about 300 seconds. "do-multicore" takes about 210 seconds real, (300 seconds user). this seems pretty disappointing. the cores are not used for the most part, either. feedback appreciated. /iaw ---- Ivo Welch (ivo.welch at gmail.com)

...) ) $`A` [1] 2 3 $`B` [2] 4 5 then the revised by() would instead produce charid ?m ?s A ? ? ? ? ?2 ?3 B ? ? ? ? ?4 ?5 working with data frames is often more intuitive than working with the output of by(). the R wizards are probably chuckling now about how easy this is... regards, /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)

...ylim=c(0,5), type="n") text(1,1, "&spades;") text(2,2, "&hearts;") text(3,3, "&diams;") text(4,4, "&clubs;") dev.off() (these are the characters that I need the most NOW, but this is a more generic question.) sincerely, /iaw ---- Ivo Welch (ivo.welch at gmail.com)

dear R experts---is there a function that prints a data frame to a string? cat() cannot handle lists, so I cannot write cat("your data frame is:\n", df, "\n"). regards, /iaw ---- Ivo Welch (ivo.welch@gmail.com) [[alternative HTML version deleted]]

...year ago, and then the answer was no. for those who are googling the group for the answer to this question, in the meantime, the poor man's version of "by" is mclapply( split( ds, factor ), FUN ) I don't know the poor man's version of "ave". sincerely, /iaw ---- Ivo Welch (ivo.welch at gmail.com) http://www.ivo-welch.info/

.... Many millions of observations, a few thousand variables (most of these variables are interaction fixed effects). could someone please point me to packages, if any, that would help me estimate such models? (can these problems be split over many different cores?) advice appreciated. /iaw ---- Ivo Welch (ivo.welch@brown.edu, ivo.welch@gmail.com) CV Starr Professor of Economics (Finance), Brown University http://welch.econ.brown.edu/ [[alternative HTML version deleted]]

...sprinkle "cat" statements everywhere, just to locate the line where the error appears.) Of course, I would really love to see the line in my program that triggered this, but I have asked this before, and I understand this is too difficult to get into the R language. regards, /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)

...origin="1970-01-01"))) The lower axis is drawn from the plot() with dates. The upper axis from axis() is drawn with numbers, not dates. (PS: Is there an easier way to tell R that I want a whole lot more tick marks and/or labels than what it gives me by default?) regards, /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)

...eclare what packages are actually imported. ?importIntoEnv tells me that it is not intended to be used. how can another program declare exactly what functions it wants to import? (frankly, I would love to turn all default autovivification off in my program, but that's not possible.) /iaw ---- Ivo Welch (ivo.welch at gmail.com)

...rn.value) ) return.value } is this a feasible summer project for a student with a prospect of inclusion of the completed code in the R core language itself if I pay for the development time? {or does better syntax already exist and I am just ignorant (which I often am)?} regards, /iaw ---- Ivo Welch (ivo.welch at gmail.com)