search for: ivo_welch

Dear R wizards: under R-2.1.0: eargs <- 3:5; line <- paste(c("echo A B", eargs)); cat("executing from R: '", line, "'\n"); system(line); Oddly, only "A" and "B" are echoed, not the eargs. I had hoped that line would be one string at this point, and for printing this seems to be true. However, unlist(line) still gives me the 4

hi: where would I find facilities to draw circles, ovals, and semicircles? (or should I construct them myself using curve?) regards, /ivo

I ran into an interesting oddity of R, if (0) { print(1); } else { print(2); } is a syntax error, while if (0) { print(1); } else { print(2); } or if (0) { print(1); } else { print(2); } is not. I presume it has to do with the duality of the newline functioning as an end of command (;) character, though it still seems a bit odd, and it took me a while to figure out

dear R wizards--- I would like to do some book-on-demand printing at a popular printer named lulu, but lulu requires inclusion even of the basic postscript fonts. Interestingly, my book itself does not need the 14 base acrobat fonts, only the embedded R figures do. Of course, I really would like to get pdftex to embed the fonts, but how to do this is not obvious either. [This method seems

dear wizards: my .Rprofile has just one command for testing, loadhistory("~/.Rhistory") but this gives me an error on R startup: Error: couldn't find function "loadhistory" Invoking loadhistory() as the first interactive command works fine; incidentally, I believe loadhistory() in the .Rprofile worked in earlier or other platform R releases, too. Is the .Rprofile

Dear R Wizards: Running R 1.9.1. on amd64. Promise<- c(0,20,40); Expect<- c(0, 20, 0.2*20+.8*40 ); # this omits printing numbers on the axes labels. pdf(file = "bug.pdf" ); plot(Promise, Expect, type="b", ylim=c(0,60)); dev.off(); # this works postscript(file = "bug.eps" ); plot(Promise, Expect, type="b", ylim=c(0,60)); dev.off(); apologies if

hi: could someone please point me to a function that allows me to solve general non-linear functions? > irr.in <- function(r, c1, c2, c3 ) { return(c1+c2/(1+r) + c3/(1+r)^2); } > solve.nonlinear( irr.in, -100, 60, 70 ); 0.189 If someone has written an irr function, this would be helpful, too---though not difficult to write, either. thanks for any pointers. Regards, /iaw

<ivo_welch-rstat8783@mailblocks.com> writes: > PS: I am still looking for an R wizard who would be interested in > coauthoring an "R cookbook" ala the "perl cookbook" with me... I think I've said it before, but I think such a book ought to coauthor Paul Johnson, whether or n...

This has been in the R-admin manual for a least a week, and I reported it here earlier than that. R 2.0.0 alpha does not allow f2c on 64-bit platforms. It's all been dealt with quite awhile ago .... On Sun, 12 Sep 2004 ivo_welch-rstat8783@mailblocks.com wrote: > > from the gentoo folks, on f2c problems with R on 64bit platforms: > > "Config and me finally found the reason. When R calls fortran functions > from its c sources, it uses strictly ints for intgeres, not long ints. > But f2c is perfec...

dear R wizards: I would like to write a function that roughly places the equivalent of the following latex text into the current plot: \newcommand{ \placesigma }[4]{ \put(\#1,\#2){ \sigma_{A , #3} = #4 } I cannot figure out how to do this. I know I have to use a function that uses expressions in a text() invoke. But passing arguments and nesting strings and expressions has so far not

On Sat, 21 Aug 2004 ivo_welch-rstat8783@mailblocks.com wrote: > > peter/brian: thank you for the help. i can now report that gentoo > amd64 can compile R just fine, too; it requires the f77 USE flag and a > gcc compiler rebuild first, though. I also went to gcc 3.4.1. my > segfault troubles earlier were...

dear R wizards: is it possible to use a postscript font symbol as a plot symbol? in particular, I want to use the four postscript symbols for playing cards (club, heart, spade, diamond) as points. In LaTeX, these four are \Pisymbol{psy}{"A7} \Pisymbol{psy}{"A8} \Pisymbol{psy}{"A9} \Pisymbol{psy}{"A10} and what I would love to do is place them, at say, (x=1,y=1),

dear wizards: FYI: gentoo is a linux meta distribution, which compiles all packages. Once running, gentoo is stable on most applications. (it has some problems with system tools, such as grub.) the compiler is gcc 3.3.3. I do not expect anyone to track down for me why R fails on the gentoo amd64+gcc3.3.3 system, but I thought that it would be good to put it on the record to save

dear wizards: FYI: gentoo is a linux meta distribution, which compiles all packages. Once running, gentoo is stable on most applications. (it has some problems with system tools, such as grub.) the compiler is gcc 3.3.3. I do not expect anyone to track down for me why R fails on the gentoo amd64+gcc3.3.3 system, but I thought that it would be good to put it on the record to save

suggestion: could the R team please add positions 5 through 8 for the arg parameter in text(), which would select the diagonals (northeast, southeast, southwest, northwest)? sincerely, /ivo welch PS: thanks for all the earlier circle help. knowing some of the predispositions of the R developers, I probably should not suggest adding to the documentation > ?circle please see

Hi Ivo: You might check out Paul Jobnson's following page: http://www.ukans.edu/~pauljohn/R/Rtips.html   HTH, Arin On Thu, 08 Jul 2004 ivo_welch-rstat8783@mailblocks.com wrote : > >...I used to use perl for much work, and although there is much to like about it, R seems to be even better for most tasks---except that there is one perl resource that R cannot beat: the Perl Cookbook. if I only had an R cookbook... > >regards, &gt...

SAS * better manuals. * tech support for most universities contracted into the price, thus for researchers. * batch orientation. if you have to handle data sets that are as large as your memory, SAS generally does it better. It seems to be an "n-pass design." Years ago, when memory was expensive, I could not use S/R even for simple problems. Just a few simple operations, and I

dear R community: i have been looking but failed to find the following: is there a function in R that updates a plain OLS lm() model with one additional observation, so that I can write a function that computes recursive residuals *quickly*? PS: (I looked at package strucchange, but if I am not mistaken, the recresid function there takes longer than iterating over the models fresh from

dear R wizards: an operation I execute often is the deletion of all observations (in a matrix or data set) that have at least one NA. (I now need this operation for kde2d, because its internal quantile call complains; could this be considered a buglet?) usually, my data sets are small enough for speed not to matter, and there I do not care whether my method is pretty inefficient (ok, I

Sorry, one more: on OSX, I deleted my old 2.9.2 R.app, and installed the 64 bit version of 2.9.0. I then did an "install.packages("car")" under my new 2.9.0. It seems to have worked, but alas, I still get an error that package 'car' was built under R version 2.9.2 . Where exactly does R under OSX install its packages? (is it a bug that another car is loaded?) PS: