similar to: Maple and R

Hi R-users, Does R has a topic on newton's method? Thank you for the info.

I am working on a project that requires me to do very large factorial evaluations. On R the built in factorial function and the one I created both are not able to do factorials over 170. The first gives an error and mine return Inf. Is there a way to have R do these larger calculations (the calculator in accessories can do 10000 factorial and Maple can do even larger) -- View this message in

Dear R users, i try to integrate lgamma from 0 to Inf. But here i get the message "roundoff error is detected in the extrapolation table", if i use 1.0e120 instead of Inf the computation works, but this is against the suggestion of integrates help information to use Inf explicitly. Using stirlings approximation doesnt bring the solution too. ## Stirlings approximation lgammaApprox

Hello list I have installed Maple 6 with no problems. It even put a shortcut on my Kubuntu Dapper Desktop but when I run Maple, I could see the splash screen then everything disappears. I don't know if this means that Maple 6 crashes. Any idea of troubleshooting? -- OOzy Kubuntu-Dapper

Would like to try my luck to see if I can catch your eyes. I was trying to do some contrasts within ANOVA. I searched the archive and found a clue posted by Steffen Katzner ( http://tolstoy.newcastle.edu.au/R/help/06/01/19385.html) I have three levels for a factor names "StdLot" and want to make three comparisons, 1 vs 2, 1 vs 3 and 2 vs 3. First,

Hi. I was having trouble getting Greek letters and mathematical symbols in maple under wine, and a search turned up a few messages suggesting others have the same problem. In particular, Thomas Koenig wrote... http://www.winehq.com/hypermail/wine-users/2001/04/0028.html > I wrote: > > >I have tried several applications which use Greek letters, such as > >Maple V R5 and

Dear R-wizards! I have been learning on my own how to use this fantastic program.. but I agree with some people that even with the manuals, the faq and so on.. when you are sitting fully alone.. progress can be ... slow... very slow indeed.. In fact sometimes, looking at the "solutions" provided by some of you- I am just flabbergasted to the point that I couldn't figure out how to

I am trying to install my copy of maple 8 for windows, using wine in mandriva 2008.1. Apparently there is a difficulty with handling the java code for the installantion front-end. Below I report the log file showing the error. One curious thing is that I get very close to make wine run the maple 8 version I have already installed in a windows XP partition. The maple window correctly pops up, but

I wonder if there is a utility that enables Maple files to be imported into R? Many thanks. Andrew Philpott [[alternative HTML version deleted]]

Hi, I notice you're running a 32-bit program; are you also on a 32-bit host, or do you have a 64-bit OS installed? We don't generally test on 32-bit hosts, so it's possible you found a new bug. In addition, there are some known bugs with debugging 32-bit programs (even on 64-bit hosts) which will we hopefully be resolving soon. Nonetheless, I was unable to reproduce the behaviour you

Hi r-users,   I have the following code to solve 4 simultaneous eqns with 4 unknowns using newton iteration method.  But I got the error message:   pars <- c(1.15, 40, 50, 0.78) newton.input2 <- function(pars) {  ## parameters to estimate      alp <- pars[1]    b1  <- pars[2]     b2  <- pars[3]    rho <- pars[4]   f1 <- pars[1]*pars[2] f2 <-

Question for 'experts' in LP using R (using the lpSolve package, say) -- which does not apply to me for the sort of problem I describe below. I've run any number of LP's using lpSolve in R, but all of them to date have objective and constraint functions that both contain the same variables. This lets you set up a LHS and RHS matrix/vector that are symmetrical. But, for a

Apart from the fact that the statement "such that t1+t2+t3+t4=2970 (as it must)" is not correct, the LP can be implemented as follows: library(lpSolve) LHS <- rbind( c(0,0,0,0, 1, 0, 0,0), c(1,0,0,0,-1, 1, 0,0), c(0,1,0,0, 0,-1, 1,0), c(0,0,1,0, 0, 0,-1,1), cbind(-diag(4),diag(4)), c(0,0,0,0,0,1,0,0), c(0,0,0,0,0,0,1,0), c(0,0,0,0,0,0,0,1) ) RHS <-

Hi all, I am interested in performing a cluster analysis on ecological data from forests in Pennsylvania. I would like to develop definitions for forest types (red maple forests, upland oak forests, etc.(AH AR in attached table)) based on measured attributes in each forest type. To do this, I would like to 'draw clusters' around forest types based on information from various tree

I am unable to install the rggobi package. I do not have trouble installing other packages. Any advice or suggestions? >sessionInfo() R version 2.8.1 (2008-12-22) i386-pc-mingw32 locale: LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252 attached base packages: [1] stats

guRus: I have a variable "beta" as an argument to R's beta function. So essentially I have a case of beta(alpha, beta). What surprises me is that R doesn't barf on this stupid programming practice. R gets the right answer. How does R know "beta the variable" from "beta the function"? Joseph F. Lucke Senior Statistician Research Institute on Addictions

Dear All, Hello! I have some questoins in R programming as follows: Question 1- How to take the integral of this function with respect to y, such that x would appear in the output after taking integral. f(x,y)=(0.1766*exp(-exp(y+lnx))*-exp(y+lnx))/(1-exp(-exp(y+lnx))) y in (-6.907,-1.246) It is doable in maple but not in R. At least I could not find the way. p.s: result from maple is:

Hello, I am unable to figure out how to code a new column in a data frame based on an existing column that matches a column in a reference data frame, in a relational-db fashion. I would like this to maintain a minimum set of reference tables that may be reused over several similar datasets. Specifically, I have two data frames as listed below, 'Bos' and 'tree.' For each case in

Sorry if asked before. I'm new to LLDB, try to use it according to the lldb project site. I write some very simple code like: #include <stdio.h> int main(int argc, char **argv) { int counter = 0; while ( counter < 10 ) counter++; printf("counter: %d\n", counter); return 0; } and the session like: $ clang -g main.c $ lldb-3.4 a.out (lldb)

Hi all! Does anyone knows if it exists a "symbolic math" package in R, that allows to compute derivatives, integrals, etc.? Does exist a freeware version of Maple? Cheers, Marco [[alternative HTML version deleted]]