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As the subject line says, we get different results for tan(pi/2) and tanpi(1/2), though this should not be the case: > tan(pi/2) [1] 1.633124e+16 > tanpi(1/2) [1] NaN Warning message: In tanpi...

Applejus <ielkhoury <at> gmail.com> writes: > > > Hello, > > Could someone tell me what the SPLUS "is.category" function do and what is > its equivalent in R? > Thank you, I couldn't find any help elsewhere... > > If you Web search for "splus...

venkatesh bandaru <venkatesh.bandaru <at> gmail.com> writes: > If you had searched for it, you would have easily found the 'clue' package: In package clue solve_LSAP() enables the user to solve the linear sum assignment problem (LSAP) using an...

?hagen Patrik <Patrik.Ohagen <at> mpa.se> writes: > > Dear List, > > I have used all my resources (i.e. "help.search) and I still havn't been > able to figure out if there is an Exponential Smoothing command in R. A...

Paul Smith <phhs80 <at> gmail.com> writes: > > Up to my best knowledge, R cannot deal with optimization problems with > nonlinear constraints, unless one uses the penalty method. Outside R, > Ipopt and Algencan can solve problems like yours, but one needs...

Czerminski, Ryszard <Ryszard.Czerminski <at> astrazeneca.com> writes: > > I am looking for an efficient way to find near neighbors... > > More specifically... > I have two sets of points: A & B and I want to find > points in set B which are...

Dear List: An e-mail mentioning the r-project.org address and sent to a friend at a German university was considered spam by the local spam filter. Its reasoning: the URL "r-project.org" is blacklisted at uribl.swinog...

I am looking for an implementation of the EM clustering algorithm in R. This method is quite interesting and, for example, realized in the WEKA data mining package -- and very slow, unfortunately. Is there an R package containing the EM...

Dear R-help, I am looking for ideas and presentations of new and advanced data visualization methods. As an example of what I am searching for, the 'Many Eyes' pages at http://manyeyes.alphaworks.ibm.com/manyeyes/ may provide a...

<alan.ng <at> gmx.net> writes: > > Hello, > > I am trying to run a constrained optimization in R. "constrOptim" is really > useful and has helped me a lot, but unfortunately, it doesn't provide the > hessian. Is there a solution to...

Michael Kao <mkao006rmail <at> gmail.com> writes: > Well, taking a second look, I'd say it depends on the exact formulation. In the applications I have in mind, I would like to count each occurrence in B only once. Perhaps...

Tribo Laboy <tribolaboy <at> gmail.com> writes: > [...] > These seem to include among others Perl and compiler. But R is an > interpreted and cross-platform language, I don't understand the need > for additional platform specific tools just to call a...

> /Why not modify the C code of knn? (Not knn1)/ Because I thought it would not be a good idea to apply 'knn' a 1000 times or more. Instead I was looking for a procedure that returns a structure making...

Dear R-help, I am looking for a function that will plot error bars in x- or y-direction (or both), the same as the Gnuplot function 'plot' can achieve with: plot "file.dat" with xyerrorbars,... Rsite-searching led me...

JWDougherty <jwd <at> surewest.net> writes: > Can someone point me to an implementation of the "runs up and runs > down" test, or does such beast exist in R? From web searches the > "runs up and runs down" test is commonly...

Is there an implementation of the Gamma test available in R? This is an interesting statistics for non-linear modelling and there is a commercial program available as *winGamma*. It would be nice to have this approach or something similar...

Carl Witthoft <carl <at> witthoft.com> writes: > > Hi, > So far as I can tell, the 'col.ticks' parameter for axis() only uses the > first value provided. E.g.: > > plot(0:1,0:1, col.ticks=c('blue','red','green')) #all...

Angelo Scozzarella <angeloscozzarella <at> tiscali.it> writes: > > Hi, > is there a good editor for Mac Os? We had the same discussion in December 2007 and again in June 2008. Please consider the recommendations given in these threads. My personal favorite...

How can I find out which functions of my package A are called within another package B that depends on, imports, or suggests package A ? And more specifically, which functions in B are calling functions in A ? I tried to...

Remko Duursma <remkoduursma <at> gmail.com> writes: > > Here is a different solution: > > library(gpclib) > p1 <- as(poly1, "gpc.poly") > p2 <- as(poly2, "gpc.poly") > > area.poly(p2) + area.poly(p1) - area.poly(union(p1,p2)) > > I.e., take areas of...