similar to: slight documentation error in "stats" package "arima"

I wondered if there were standard practices in CRAN for delivery of R source implementing functions in R packages. I has encountered a couple of packages where the gzipped version of source contains very little, primarily the Help files describing the functions in the package. In some cases I can find the source as the value of the function name. Given that these packages are released as GPL,

I have a JPEG map of temperature data, coded using a given legend where blues are cooler and reds hotter. Is there any preexisting R magic or package which might let me recover the value of the scalar quantity so represented given the RGB values at each point in the picture? After processing, I'd also like to push the results back through the translate to get an RGB JPEG again. Thanks for

Recently, a package for convex optimization was announced for Python, based upon the LP solver GLPK, the SDP solver in DSDP5, and the LP and QP solvers in MOSEK. I'm aware GLPK is available for R, but wondered if anyone had good packages for convex optimization along these lines for R. TIA.

There's Renka's STRIPACK, and TRIPACK, respectively, ACM TOMS Algorithms 772 and 751, and there's the R package "deldir" which does the Delaunay for a plane, but does anyone have or know of the tessellation in R for a sphere? Also, is there a standard indexing scheme for Delaunay facets, and perhaps of edges in such facets? I'd expect that to be a publication reference,

I wanted to put this on the R Wiki, but found the suitable pages were read-only. I wanted to get it out in public to save people work. I was converting dates like "2009/03/26 01:00:00 AM" using as.POSIXct. I found that using a format of "%Y/%m/%d %I:%M:%S %p" did not work correctly to distinguish AM from PM. Both were converted into the same timestamp. Indeed, what I found

lm's "predict" function offers an "interval" parameter to choose between 'confidence' and 'prediction' bands. In the package "robust" and for "lmRob", there is also a "predict" but it lacks such a parameter, and the documented "type" parameter has only "response" offerred. Is there some way of obtaining

Apologies if this is the wrong place to ask. I'm not aware of a mail list devoted to database interfaces. Please direct me if so. I am trying to use TSMySQL. It loads RMySQL, and apparent the CRAN version has an .onLoad script which seeks out the local MySQL server. If that fails, the package fails to load. Thing is, I'm trying to access a MySQL database on a remote machine for which

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, Rsolnp is used in a few other packages (e.g., depmixS4), but I cannot seem to find source illustrating its call sequence, and the precise definition of the functions passed. Can anyone help?

Is it possible to export a list of installed packages from WinXP, and use that export to import the same set of packages on Ubuntu (Jaunty)? No doubt there is custom code that could be written, but I wonder if R 2.9.1 has anything built it to do that? Is it as simple as moving something like Rprofile.site from one machine to the other? I had a look at R-admin.pdf, and although it talks a lot

I admire package-builders being proactive and having their facilities ready for upcoming R releases. However, if the publicly released version of R is 2.10.1 and a package is built for R 2.11.0, users get the embarrassing notice about a disconnect, and cannot do much about it. If it is tedious to roll out a new package on time, perhaps there's a possibility for automation here. Thanks. I

Can someone point me to the proper place in the documentation or on the Wiki where I can learn how to get R to stop interpreting the string "NA" as something special? I have a table in a database which contains (among other things) country codes and continent codes. The standard set of two-letter codes includes "NA" to denote "North America". I learned of the

We have just published the 2002/2 issue of R News on http://cran.R-project.org/doc/Rnews where you can download the newsletter as PDF or Postscript file. It will propagate to the CRAN mirrors within a day or two. This issue focuses on the R 1.5.0 release, with key innovations in the standard add-on package 'ts' and the two new recommended packages 'grid' and 'lattice'.

We have just published the 2002/2 issue of R News on http://cran.R-project.org/doc/Rnews where you can download the newsletter as PDF or Postscript file. It will propagate to the CRAN mirrors within a day or two. This issue focuses on the R 1.5.0 release, with key innovations in the standard add-on package 'ts' and the two new recommended packages 'grid' and 'lattice'.

Joyful. I'm adapting a FORTRAN 77 package for use with R. Pretty straightforward. Except for a glitch it took me some time to figure out. This existing package has subroutines which have parameters called "NA". So, I called subroutines like bnodes <- function(n, lst, lptr, lend, nodes, nb, na, nt) { ensure.all.numeric(list(n, lst, lptr, lend, nodes, nb, n.a, nt),

Hello, I understand how to use substitute() to integrate Greek characters into plot labels, but I haven't been successful getting Greek to appear in the vector entries passed to legend() labels. Any hints? Thanks, -TAG

Hello, I am trying to include legend text with math symbols from a predefined character variable that is read in from a file. ? If there is only one line of text in the legend, the following, although cumbersome, works for me: ? > LegendText = " 'U' [infinity], '=10 m/s' "?? # (read in from a file) ??> LegendName = paste("bquote(paste(",LegendText,

Hi, I went ahead and implemented something. However: - I cannot garantie it gives correct results since, unfortunately, the data used in Syrjala 1996 is not published along with the paper. To avoid mistakes, I started by coding things in a fast and simple way and then tried to optimize the code. At least all versions given the same results. - As expected, the test is still quite slow

Like many software assemblies, R is updated frequently. Also, it creates its own release-numbered directory when it is installed. Packages get dumped into the subdirectory "library". I have a personal habit of storing documents related to R packages in the "doc" subdirectory. Here are my questions. (1) How do people manage an upgrade, from 2.6.1, say, to 2.6.2? 2.6.2 will

I am new to R and I'd like to use the randomForest package for my thesis (identifying important variables for more detailed analysis with other software). I have found extremely well written and helpful information on the usage of R. Unfortunately it seems to be very difficult to find similarly detailed tutorials for randomForest, and I just can't get it work with the information on

The package "sm" was obtained twice, one using R's built-in updating of packages, the second directly. In both cases the USA-NC CRAN mirror was used. In both cases, loading the package under R 2.10.1 for Windows resulted in a 'package obsolete' kind of message. Switching the mirror to USA-CA-1 (Berkeley) got a good package that loaded without complaint. R version 2.10.1