similar to: Simple numeric "as.is" question

Regarding the flame, your might be interested in the following: read.table(myfile, as.is=T) which will interpret character columns as character rather than factor and still reads in the numeric columns as numbers. You can also specify specific columns such as as.is=3:4 if you want columns 3 and 4 to be character but other character columns to be factors. --- Date: Mon, 15 Mar 2004 11:04:08

Dear R experts. 'D()' function recognizes some of the analitical functions, such as sin, cos, etc. But I'd like to take analytical derivatives from asin, atan etc. functions. Are there any R packages providing that features? Thanks. -- Timur.

Dear Asterisk community, sorry if I'm so stupid, but I couldn't register myself with Asterisk. I created the [sip-incoming] context in the sip.conf: [sip-incoming] type = peer username = elzhov port = 5062 ; my kphone listens port 5062 host = 127.0.0.1 Then run Asterisk, and checked peers that are known for Asterisk: *CLI> sip show peers Name/username

Dear R experts, format(12345678, digits = 2) gives [1] "1.2e+07" while format(1234567, digits = 2) gives [1] "1234567" but I'd like the last number to be represented as "1.2e+06" string too. Where am I wrong? Thanks, Timur.

Dear useRs, it's quite difficult for me to find `Error:'s in my R code, because R does say about error itself, but say nothing about its location, say, string number and file with an error (which may be `source'd from another file). Are there any option for turning of the similar feature, or R can not do such a thing at all? Thanks. -- WBR, Timur.

Dear R experts, Excuse me if my question will be stupid... I'd like to fit data with x^2 polynomial: d <- read.table(file = "Oleg.dat", head = TRUE) d X T 3720.00 4.113 3715.00 4.123 3710.00 4.132 ... out <- lm(T ~ poly(X, 4), data = d) out Call: lm(formula = T ~ poly(X, 2), data = d) Coefficients: (Intercept) poly(X, 2)1 poly(X, 2)2

Dear R experts, I just upgraded R from 1.8.1 to 1.9.0 version. My .First() function in ~/.Rprofile contains x11() and par() functions. .First <- function() { x11(display = "", 8.0, 5.0) par(las = 1, ...) ## ... } And, R claims now, on startup: [hello messages skiped ...] Error in .First() : couldn't find function "x11" > I commented

Dear R experts! I try to minimize a function with external C fitting function. I get the hessian matrix. Here it is: [,1] [,2] [,3] [,4] [1,] 1.8816631 0 0.8859803 0 [2,] 0.0000000 0 0.0000000 0 [3,] 0.8859803 0 0.4859983 0 [4,] 0.0000000 0 0.0000000 0 Second and fourth rows/columns have zero values only. That's OK, because that ones related

Hello, dear Asterisk experts. When I run Asterisk (CVS HEAD version), I'm not able to play music anymore -- asterisk seems to capture sound device. Is it not a bug, but a feature? That's unlike stable (1.0.7 and 1.0.9) versions, when I can, say, run an IP telephone on the *same* machine and listen what Asterisk' autoattendant says. Now I can't do that, I need Asterisk and client

Dear R-experts! I have y(x) data, dim(y) == dim(x) == c(2000, 2) I'd like to fit them with nls: fit.result <- nls ( y ~ f(x, p1, p2, p3), start = list(p1 = ... , p2 = .. , p3 = ..) ) Actually I want to fit y[,1] ~ x[,1] and y[,2] ~ x[,2] *simulaneously*, with the same parameters set {p1, p2, p3}. I tried to feed R tha above formula, R errors with:

Dear R experts, I looked at the body of, say, `optim' function and found the call to the `.Internal', C optim function. It looks like this: .Internal(optim(par, fn1, gr1, method, con, lower, upper)) On the other hand, the C prototype of optim is: SEXP do_optim(SEXP call, SEXP op, SEXP args, SEXP rho); So, I guess that all the list of parameters passing in R are assigned to

Dear R help, I run R at home and the work, I have Debian Linux on both machines and the same 'r-base-core' deb packages installed. So I tried to run the same R script, which plots graph in x11 device and then dump it to eps file (x11 and eps you'll find attached). On the home machine there are some stranges in x11 plot as well as in eps file. On the work machine all the ok, despite

Dear R experts! I'd to fit data by 'nls' with me-supplied function 'fcn'. 1) I'd like 'fcn' to accept arbitrary arguments, i.e. I defined it as f(...) {<body>}. (Ok, that's not actually impotant). 2) Second, I would NOT like to supply every parameter in the formula. To illustrate this, let's look at the last example of 'nls' help

Hi Ogg experts! My current work is catenating packets from several ogg files to the one long stream, so I'd like to create stream once, and then reset it just before reading codec headers from every new file. However, after calling ogg_stream_reset_serialno(ogg_stream_state *os, int serialno), bos page is not pushed in stream since it calls ogg_stream_reset(ogg_stream_state *os), which

Dear R-masters, I tried to compile this simpel C-code: //----------------- #include<R.h> int main() { GetRNGstate(); return 0; } //----------------- Compiling: ~> gcc -o a a.c -I/usr/lib/R/include/ -L/usr/lib/R/bin/ -lR ~> ldd a libR.so => /usr/lib/libR.so (0x40018000) libc.so.6 => /lib/libc.so.6 (0x401a8000) libblas.so.2 =>

Dear R experts! I want to evaluate expressions from within C code. For instance, I want this code: /* ============ -- C code -- ============== */ #include <R.h> #include <Rinternals.h> SEXP foo(SEXP expr, SEXP rho) { SEXP x; PROTECT(x = allocVector(REALSXP, 1)); REAL(x)[0] = 1; UNPROTECT(1); return

Dear R experts, I fitted data (length == m) with an external library (that's a non-linear problem), and, I've got the final parameter vector (length == n) and Jacobian matrix (dim == c(m, n)). Now, I want to analyse the standard errors of the parameters correctly. How can I do it? Where can I read about it else? Thanks! -- WBR, Timur.

Dear R experts! I use image() & persp() functions for color plotting z(x,y)-type graphics. In image() colors correspond to z-values, that's what I want. OTOH, in persp() the col option means: col: the color(s) of the surface facets. Transparent colours are ignored. This is recycled to the (nx-1)(ny-1) facets. but I'd like to persp()' colors behave like in

Dear friends, please excuse me if my question will be trivial. I've installed and started Asterisk (stable 1.0.7, but with CVS HEAD I experienced just the same problem), and changed a bit sip.conf: [general] ; ... dtmfmode = inband disallow = all allow = ulaw allow = alaw allow = gsm run kphone, and call the 1235 extension. According to sample extensions.conf, Asterisk would

Hello, experts! I've tried to convert MASS.Rd, for instance: R CMD Rdconv -t txt MASS.Rd -o MASS.txt 2>MASS.log Comp was thinking for a long, about 30s on Linux 600MHz/128M, but after that R didn't produce the result MASS.txt file, but very large log. Here is its header: ******* Syntax error: mismatched or missing brackets in /----- \name{Aids2} \alias{Aids2} \title{