similar to: Dealing with NAs in C

Identified as root cause of a bug in data.table: https://github.com/Rdatatable/data.table/issues/3267 On my machine, strtoi("", base = 2L) produces NA_integer_ (which seems consistent with ?strtoi: "Values which cannot be interpreted as integers or would overflow are returned as NA_integer_"). But on all the other machines I've seen, 0L is returned. This seems to be

Hi the list, I am writing a R function that call a C function. The C function needs integers but I do not manage to give a NA integer as argument : --- C code --- void essai(int *t){ Rprintf("\nT0=%i T1=%i T2=%i T3=%i",t[0],t[1],t[2],t[3]); } --- R --- boub <- c(1,2,3,4) .C("pour",as.integer(boub),NAOK=TRUE) # T0=1 T1=2 T2=3 T3=4[[1]] # [1] 1 2 3 4 boub <-

>>>>> Martin Maechler >>>>> on Fri, 11 Jan 2019 09:44:14 +0100 writes: >>>>> Michael Chirico >>>>> on Fri, 11 Jan 2019 14:36:17 +0800 writes: >> Identified as root cause of a bug in data.table: >> https://github.com/Rdatatable/data.table/issues/3267 >> On my machine, strtoi("", base =

Hi, I'm trying to install RMySQL and I keep hitting errors. My computer is: uname -a Linux cricket 2.6.18-92.1.22.el5PAE #1 SMP Tue Dec 16 12:36:25 EST 2008 i686 i686 i386 GNU/Linux I have set the following environment settings: export PKG_LIBS="-L/usr/lib/mysql -lmysqlclient" export PKG_CPPFLAGS="-I/usr/include/mysql" I run the following command: R CMD INSTALL

I've noticed that the max.col function with the default "random" option often gives unexpected results. For instance, in this test, it seems clear what the answer should be: > # second col should always be max > x1 = cbind(1:10, 2:11, -Inf) > > # this works fine > max.col(x1, "first") [1] 2 2 2 2 2 2 2 2 2 2 > > # this gives random answers >

Buen día para todos los que ven este correo. En estos días estoy estudiando la potencia de una prueba en inferencia, pero no entiendo bien como correr un codigo que lo haga pertinentemente, el codigo que corro es el siguiente, la idea es que a medida que crece el tamaña muestral pues la potencia de la prueba aumente, pero no se como hacer para que, repita la prueba variando el tamaño de la

I'd like to propose that the whenever the length of condition passed to an if or a while statement differs from one, an error is produced rather than just a warning as today: > x <- 1:2 > if (x == 1) message("x == 1") x == 1 Warning message: In if (x == 1) message("x == 1") : the condition has length > 1 and only the first element will be used There are

A colleague sent me the following: If you specify probabilities in the 'sample' function and forget to type 'prob=...', then you get nonsense. E.g. sample(1:10,1,c(0,0,0,0,1,0,0,0,0,0)) does not filter '5', while sample(1:10,1,prob=c(0,0,0,0,1,0,0,0,0,0)) does it correctly. I wish this would return an error because the

In today's pre1.5.0 > ISOdate(2002,1,1) [1] "2002-03-01 04:00:00 PST" > ISOdate(2002,1,1)==ISOdate(2002,3,1) [1] TRUE It doesn't seem to happen for days other than 1/1 -thomas > version _ platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status Under development (unstable) major 1 minor 5.0 year 2002 month

Hi, The function cummax() seems to have a bug. > x <- c(NA, 0) > storage.mode(x) <- "integer" > cummax(x) [1] NA 0 The correct result of this case should be NA NA. The mistake in [ https://github.com/wch/r-source/blob/trunk/src/main/cum.c#L130-L136] may be the reason. Best Regards, Dongcan -- Dongcan Jiang Team of Search Engine & Web Mining School of Electronic

Chain?of?calls?of?C?functions?in?coerce.c?for?as.character(<logical>)?in?R: do_asatomic ascommon coerceVector coerceToString StringFromLogical?(for?each?element) The?definition?of?'StringFromLogical'?in?coerce.c?: attribute_hidden?SEXP?StringFromLogical(int?x,?int?*warn) { ????int?w; ????formatLogical(&x,?1,?&w); ????if?(x?==?NA_LOGICAL)?return?NA_STRING;

Tomas, I am thinking of writing something for R-devel, and hope to have your input first. I get moderated on R-devel as I am now subscribed as brian.ripley at R-project.org which of course I cannot send from. So I am even more discouraged from posting there. (R-core is bad enough with Luke discouraging all innovation except by him and Simon completely misunderstanding the C23 status.)

Is there a missing value constant defined for R_xlen_t, cf. NA_INTEGER (== R_NaInt == INT_MIN) for int(eger)? If not, is it correct to assume that missing values should be taken care/tested for before coercing from int or double? Thank you, Henrik

R community, As you may know, R's iconv doesn't work well converting to and from encodings that allow embedded nulls. For example > iconv("foo", to="UTF-16") Error in iconv("foo", to = "UTF-16") : embedded nul in string: '\xff\xfef\0o\0o\0' However, I don't believe embedded nulls are at issue here, but rather that R's iconv

Dear R core team Using the following code produces an empty plot (similar to col = NA): > plot(1:9, col = factor(rep(1:3,3), labels = c("red", "blue", "black"))) My question: Shouldn't one get at least a warning (or an error) if one tries to use a factor as col argument? Thanks for an answer. Regards, Christoph Buser

I am trying to parallelize part of a C function that is called from R (via .C) using OpenMP's "parallel for" pragma. I get mixed results: some runs finish with no problem, but some lead to R crashing after issuing a long error message involving memory violations. I found this post, which describes how a .Call() function can be made to avoid crashing R by raising the stack limit:

Hi, I would like to figure out the meaning of the return value of these two functions. Here are the default definitions I find from R source code: static int altreal_Is_sorted_default(SEXP x) { return UNKNOWN_SORTEDNESS; } static int altreal_No_NA_default(SEXP x) { return 0; } I guess the macro *UNKNOWN_SORTEDNESS *in *Is_sorted* and 0 in *No_NA *simply means unknown sorted/NA status of

R gurus, Every so often(*) someone asks how to suppress scientific notation in printing, so I thought I'd give it a shot, but I need some help. The formatting decision is made(**) on line 286 of src/main/format.c : if (mF <= *m) { /* IFF it needs less space : "F" (Fixpoint) format */ where mF is the number of characters for "normal" printing and *m is the number

Just for the record, I want to let the list know that I succeeded in booting a modified Universal TCP/IP Network Bootdisk floppy from http://members.iinet.net.au/~bdriver/bootdisk/ I started with a Win98 Bootfloppy from http://www.tobs.uku.co.uk. Then I made a disk image from this, using dd.exe from cygwin. Then I converted this disk image from 1.44MB to 2.88MB with winimage. Then I copied

On Sat, 12 Jan 2019 22:04:50 +0100 Anton Blau via samba <samba at lists.samba.org> wrote: > Hello, > > please excuse my bad english. But I am not a native speaker. > > I installed samba 4 (DC) like this description > http://tobs.tips/_doc_/ProxMoxDoc/07samba/ on a new Debian 9 System. > > After > > * apt-get install samba > > * service samba stop