similar to: Accumulating data row by row into a data frame

In Matlab or Octave I can evaluate (evalf) the content of a string. In R I have looked around in the docs, but have not found a way to do something equivalent (which is possible, I think). Can anybody give me a pointer? ============================================================================= Thomas Hoffmann, Institut fuer Halbleiter- und Mikrosystemtechnik, TU Dresden E-mail: hoffmann at

Can anybody of the architects of R enlighten me about the reasoning behind the selection of the IEEE 754 mode for the building of R, please? Special points of interest are: 1. The selection seems to be based on the availability of isnan() and finite(). Is this a common way to test for IEEE 754? 2. The C9x draft introduces isfinite() instead of finite() (and as I see, some systems, e.g. the

I try to fit subsequentially different nonlinear models to data. Up to now I tried a first model and if I could not fit this one proceeded to another one. Now I would like to handle this automatically. But much to my chagrin I did not find a way for dealing with the error messages from nls(), e.g. getting them as "control information" or at least just returning from nls() without a

I have a problem to understand the way gc_inhibit_torture is defined. In include/Defn.h it is declared as extern, using the __MAIN__ trick this leads to a definition in main/main.c. But in main/memory.c you define (and initialize) gc_inhibit_torture again: int gc_inhibit_torture = 1; /* gets set to zero after initialisations */ Then, in e.g. unix/system.c immediately at the beginning of

I try to fit reaction kinetic data to a given hypothetical model consisting of 3 ODEs. After some reading in Bates/Watts and the literature cited there (e.g. Jennrich/Bright) I looked in R for functions that support the use of the matrix exponential method. Until now I used for a similar (but simpler) problem the nls package and fitted against the the parameterized solution function. But this

I want to report the progress of my attempts to get R running on HP-UX with gcc: Firstly, I could work around the PIC problem by leaving out all the lib stuff (I rebuilt gcc with --enable-share, but this (alone) did not help), e.g. the line gcc -shared -fPIC -o ctest.sl ansari.o fexact.o kendall.o ks.o prho.o swilk.o -L/usr/local/lib -lg2c -lm -L/lib/pa1.1 -L/usr/lib/pa1.1 -u main

I tried to build R-1.1.1 on my HP-UX 10.20 box. For this I installed gcc 2.95.2 and built g77 (version 2.95.2 19991024 (release)). Making R runs to the point, where shared libs are linked. There it reports: make[4]: Entering directory `/disk4/hoffmann/Work/rwork/src/library/ctest/src' gcc -I../../../../include -I/usr/local/include -fPIC -g -O2 -c

gday R friends, I was wondering if anyone could help me with some graphics issues please. I'm processing R in batch on redhat6.2 with some graphics to be imported into msword on NT. For scaling within my doco I want some vector type graphics. win.metafile doesn't seem to be supported on redhat which gives me postscript. postscript is ideal but doesn't contain a preview so I

hi, all. I use R on a unix (linux) box and am quite happy with it. However, sometimes I need to create a graph that needs to be used with Microsoft Word or Powerpoint (ug). I can create a png or jpeg format picture, but the text look pretty crummy because jpeg is bitmapped. I can also create a PS/EPS version (my preference), but then it doesn't display properly in word or powerpoint (but it

I was hit by ugly crashes of R, when I tried to read big data sets ("volcano"). So I looked into the code and found the following in character.c (triggered by substr()): I assume that the helper function AllocBuffer() shall facilitate an economic memory management. But the use of realloc() in the else-branch does not conform to ANSI and may hit you with certain compilers. When called

I was hit by ugly crashes of R, when I tried to read big data sets ("volcano"). So I looked into the code and found the following in character.c (triggered by substr()): I assume that the helper function AllocBuffer() shall facilitate an economic memory management. But the use of realloc() in the else-branch does not conform to ANSI and may hit you with certain compilers. When called

This is my first question to this list and possibly a bit dumb, but anyway: Can anybody tell me, where, e.g. in the "unix" reference release a DEFINITION of char * R_Home can be found? Via Defn.h the "extern" DECLARATION is everywhere, but when I derived a somewhat other main() program my linker complained about the missing definition. Thomas Hoffmann.

Full_Name: Thomas Hoffmann Version: 1.0.0 OS: OS/2 Warp 4.0 FP 11 Submission from: (NULL) (141.30.125.20) I autoconfigured/configured the src'es w/o having XDR (#undef HAVE_RPC_XDR_H). In saveload.c , at the beginning of the file the XDR code is enclosed by matching #ifdefs. But in the NEW_SAVE_FORMAT section, there are no #ifdefs around the XDR code. Does this imply that using the new

On a system with IEEE_754 undefined, I run into an bug, when the value of an element of the first argument (e.g., x[0]) of formatReal() is NA: 1. (format.c:235) if (!R_FINITE ..) gives nanflag=1 (!naflag remains 0) 2. (format.c:272..288) *m gets an value of -2147483643 (from the format fiddling, should not matter to us) 3. (format.c:289) because naflag is zero, m does not

I get crashes when I call R without any arguments and having no environment variables R_PROFILE and RPROFILE. The reason is, that in unix/sys-common.c in R_OpenSiteFile() fopen is called with a null ptr as filename (because this is the outcome of getenv()). Although most compilers seem to interpret this as "file not found", this is an undefined behavior concerning to all C standards

> Dear all, > I am looking for basic examples of the use of tcltk in R. > Thank you in advance for any information, R-script, ... Most of us started from the handful of examples you can see via demo("tcltk") There are also some good examples in the mailing list archives though some of the R to Tcl/Tk interfaces changed slightly in recent releases. -- According to the

Greetings: We have a problem with accumulating latency in a 1 fps nsv video stream; the delay is about 5 sec. when the stream is first mounted but after about 10 hours it is up to 1/2 hour and after 24 hours it is almost an hour (no frames are dropped, a client viewing the stream just sees video delayed by those amounts). I have commented-out the <burst-on-connect> and <burst-size>

Greetings: We have a problem with accumulating latency in a 1 fps nsv video stream; the delay is about 5 sec. when the stream is first mounted but after about 10 hours it is up to 1/2 hour and after 24 hours it is almost an hour (no frames are dropped, a client viewing the stream just sees video delayed by those amounts). I have commented-out the <burst-on-connect> and <burst-size>

I have two functional tests for my user controller: def test_bad_registration post :register, :email => "tester1@foo.com" assert_response :success assert_not_nil @response.body =~ /^\<error/ assert_nil assigns[''user''] end def test_good_registration @response.body = nil post :register, :username => "tester",

When using v2 we would modify the saved /var/lib/shorewall/restore file to modify logging so we had separate counts by the physical device the packets (actually, NEW connections, not total packet counts), such as: -A LogStuff -j LOG etc -A LogStuff -m physdev --physdev-in eth1 -j DROP -A LogStuff -m physdev --physdev-in eth2 -j DROP which gave us an idea where dropped traffic cam from