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Jan Theodore Galkowski <bayesianlogic <at> acm.org> writes: > > I'm interested in the Rsolnp package. For their primary function > "solnp", one example is given, and there is a reference to "unit > tests". Anyone know where these can be found? Also...

> >rpart and tree, for example. Yes, I know that recursive partitioning does some kind of splitting numerical variables. I looked into 'rpart.chm', but could not identify a function that I could call. What I would need is something like...

reynolds pravindev <reynoldspravindev <at> gmail.com> writes: > Hi > When we use the sav_gol command in R , it shows an error which says: " > error in as.matrix". We've downloaded the necessary packages. Kindly > help us with this issue. If...

Dear R-helpers: I am interested in discretization methods for numerical attributes, as they are reported in the 'machine learning' community. For example, the work of Fayyad & Irani (IJCAI-93), Kononenko, entropy-based approaches, MDL principle, the C4.5 approach...

Oliver Kullmann <O.Kullmann <at> swansea.ac.uk> writes: > > Hello, > > I couldn't find information on whether the logarithmic integrals > > Li_m(x) = integral_0^x log(t)^(-m) dt > > for x >= 0 are available in R? I saw your...

I have a set of data frames ds1, ds2, ... each having the same columns and column names: ds1 <- data.frame(x=c(1,2,3,4), y=c(5,6,7,8)) ds1 <- data.frame(x=c(9,10,11...

On Wed Mar 4 21:32:30 CET 2015 Chris Vanlangenberg writes: > > I want to compute the numerical values for modified second order bessel > function given x and other parameters, currently base R has a bessel > function for 1st order...

I have been informed by CRAN administrators that the development version of R issues warnings for my package(s). Some are easy to mend (such as Internet links not working anymore), but this one I don't know how to...

ykank <spicyankit4u <at> gmail.com> writes: > > > Dear R Users > > Does some has any idea about how to execute a scilab file(.sce file) from > the Terminal in R. > Any kind of guidance would be highly welcomed and appreciated. Have you...

Uwe Ligges <ligges <at> statistik.tu-dortmund.de> writes: > > On 19.02.2013 11:23, hellen wrote: > > Hi, > > I have a data with three variables (X,Y,Z) and I have an equation as > > Z=X/(1+L*X/Y...

Dear list: Being a bit unsatisfied with global optimization approaches in R such as "SANN" (in 'optim') or DEoptim, I looked for alternatives on the Web, such as PSwarm <http://www.norg.uminho.pt/aivaz/pswarm/> or PIKAIA. There is...

Jinsong Zhao <jszhao <at> mail.hzau.edu.cn> writes: > > Hi, > > Is there a function to do principal factor analysis in R? Do a 'RSiteSearch("factor analysis")' and you will find several packages for Factor Analysis, such as: FAiR Factor Analysis...

LE PAPE Gilles <lepape.gilles <at> neuf.fr> writes: > > The "ttda" package was devoted to text-mining. It seems to be no more > available. Did the name change ? Are other packages devoted to text-mining? The 'ttda' package is deprecated...

Bogaso Christofer <bogaso.christofer <at> gmail.com> writes: > > Hi Ravi, your suggestion helped me as well a lot. If I look into > that function, I see this function is calling another function : > > .Call("doCubature", as.integer(fDim), body(f.check...

> I wanted to simulate the Matlab DISPLAY function for some time now. After seeing a recent proposal by Gabor Grothendieck I came up with the following solution, display <- function(...) { my_names <- lapply(substitute(placeholderFunction(...))[-1], deparse) for (my in my...

You are absolutely right. I forgot that there is a difference between the unpacked and the installed directory of a package. The documentation of the *pkgapi* package in development is quite scarce and does not mention the details. Thanks for...

j.joshua thomas <researchjj <at> gmail.com> writes: > > Dear Group, > > I have followed the instructions from the link > http://datamining.togaware.com/survivor/Installing_GTK.html > However i couldn't fix the libatk01.0.0.dll application error > It is...

Given a data frame with a continuous variable and a factor. I would like to generate a histogram of the continuous variable, where each bar is filled with different colors according to the percentage of factor values falling into this...

Maxwell, John McFarland <jmmaxwell <at> wsu.edu> writes: > Hello, > > I'm trying to find a solver that will work for the mixed complementarity > problem (MCP). I've searched the CRAN task view page on optimization and > mathematical programming as well...

One way will be to solve this as an ordinary optimization problem with an equality constraint. Function `alabama::auglag` can do this: library(alabama) fn <- function(p) sum((df$y - p[1]*exp(-p[2]*df$x))^2) heq <- function...