similar to: irtoys 0.1.4

I have just submitted irtoys_0.1.0, a package potentially useful for those working with IRT models. It can fit the 1PL, 2PL, and 3PL models through a simple and unified syntax, using either the R package ltm, Brad Hanson's ICL program, or the commercially available BILOG-MG. The purpose is basically to facilitate teaching, and especially comparisons across models and/or programs. Various

I have just submitted irtoys_0.1.0, a package potentially useful for those working with IRT models. It can fit the 1PL, 2PL, and 3PL models through a simple and unified syntax, using either the R package ltm, Brad Hanson's ICL program, or the commercially available BILOG-MG. The purpose is basically to facilitate teaching, and especially comparisons across models and/or programs. Various

An updated version of the package plink has been uploaded to CRAN. This is a major revision that now includes multidimensional models and methods. plink is a package for conducting unidimensional and multidimensional IRT-based test linking using separate calibration methods for multiple groups for single-format or mixed-format common items. The package supports sixteen IRT models and eleven

An updated version of the package plink has been uploaded to CRAN. This is a major revision that now includes multidimensional models and methods. plink is a package for conducting unidimensional and multidimensional IRT-based test linking using separate calibration methods for multiple groups for single-format or mixed-format common items. The package supports sixteen IRT models and eleven

Hello I have a small problem with filled contour plots. I'd like to plot point on top of that using points(). Trouble is, the x axis of the contour plot is modified to make room for the legend but points() is not aware of that. It could be easily tackled by using a linear transformation of x in points(), but does anyone know exactly *what* transformation? Kind regards Ivailo Partchev

CRAN (and crantastic) updates this week New packages ------------ * bisectr (0.0.2) Maintainer: Winston Chang Author(s): Winston Chang <winston at stdout.org> License: GPL-2 http://crantastic.org/packages/bisectr Tools to find bad commits with git bisect * CUMP (1.0) Maintainer: Xuan Liu Author(s): Xuan Liu <liuxuan at bu.edu> and Qiong Yang <qyang at bu.edu>

else. Stuart =20 ----- Original Message -----=20 From: Ivailo Karamanolev=20 To: flac-dev at xiph.org=20 Sent: Wednesday, January 06, 2010 7:49 AM Subject: Re: [Flac-dev] FLAC C API / Visual Studio 2008 FILE* Issue I thought about this, and the MSVCRT mismatch also. What annoys me is = that I even tried compiling the library myself (with exactly the same = Visual Studio 2008 as my

The first version of the package plink has been uploaded to CRAN. plink is a package for conducting unidimensional IRT scaling and chain linking for multiple groups for single-format or mixed-format common items. The package supports eight IRT models and four calibration methods. Dichotomous Models: 1PL, 2PL, 3PL Polytomous Models: -Graded response model -Partial credit model -Generalized

The first version of the package plink has been uploaded to CRAN. plink is a package for conducting unidimensional IRT scaling and chain linking for multiple groups for single-format or mixed-format common items. The package supports eight IRT models and four calibration methods. Dichotomous Models: 1PL, 2PL, 3PL Polytomous Models: -Graded response model -Partial credit model -Generalized

I thought about this, and the MSVCRT mismatch also. What annoys me is that I even tried compiling the library myself (with exactly the same Visual Studio 2008 as my application) and the bug didn't change the least. Thank you for your ideas, but unless someone can confirm this, there still remains the possibility that I've made an error somewhere. Also someone with more experience with

Hi, Well - having in mind this is "flac-dev", I thought you are a developer and writing an application for that purpose is quite trivial. Anyway, CUE sheets are so simple, they can even be written by hand - the minimal CUE sheet is very simple. About the actual embedding - I haven't worked with metaflac or editing applications so I can't give you any specific advice for that.

Hello All, I am trying to subset a matrix using subset() and it works fine when I use matrix notation, but doesn't work when I use established column names. Sample code is below: library(mvtnorm) library(sm) library(ltm) library(irtoys) k<- 100 set.seed(271828) t <- rmvnorm(n=k,mean=c(-1,0,1),sigma=matrix(c(1,.8,.5,.8,1,.8,.5,.8,1),3,3)) colMeans(t) var(t) pairs(t) #tview

Hello Ilia, The FLAC format by nature is not a byte stream, it's a bit stream. Therefore, in order to parse it you need too build a bit-reading infrastructure. Eg. a class that accepts a byte stream, implements buffering, etc, etc, and supports reading a specified number of bits, not bytes as you are used to. There is quite a lot of bit logic there, but nothing too scary. Best Regards,

Ivailo - FILE objects are internal to the C runtime library, they are not system objects like HANDLEs (windows) or file descriptors (unix). This means that if libFLAC has linked against a different C runtime library than your application, then the two FILE objects are incompatible. This isn't just a Windows specific issue either - if libFLAC was compiled against libc and your application

Hi Ivailo The problem with an embedded CUE sheet is that this requires 2 preconditions. 1 - that the FLAC files are taken from an Audio CD, and 2 - that a drive is used such as a Plextor that can manage to do this properly. Neither condition applies here. The files I needto turn into FLAC files are 24 bit 48kHz streams that exist as WAV files on HDD. They are not from CD - I keep trying to

Dear Rexperts, after building R 2.4.0 from source in a temporary directory (*without* installation), and subsequently moving the whole source/build tree to another location, I have noticed that I had to change the variables R_SHARE_DIR, R_INCLUDE_DIR, and R_DOC_DIR in the wrapper-script /lib/R/bin/R as to reflect the current situation. However, when I try to run the HTML help via

Dear list-members, I have switched (back) to a terminal-based workflow for a while now and have noticed that after starting the HTML-based help [help.start()], then visiting the package-list (at http://127.0.0.1:<random_port>/doc/html/packages.html), and after the accessed page has been "generated" (as indicated by the message "Making 'packages.html' ... done"),

Dear Rexperts, lately I'm having troubles installing the rgl package via install.packages("rgl", dependencies=T) in the R 2.4.0 backport running under Ubuntu 6.06 LTS. I get the following error messages, despite having installed libx11-dev (as recommended in a similar post about SUSE 10.1): trying URL 'http://cran.xedio.de/src/contrib/rgl_0.68.tar.gz' Content type

Hello, my question is; for a specific item, how can I create a plot with both the empirical probability of correct response and the predicted probability as a function of the mean of the ability intervals (similar to a BILOG plot). Thank you -- View this message in context: http://r.789695.n4.nabble.com/IRT-ltm-function-plot-for-probabilities-tp2714881p2714881.html Sent from the R help mailing

Dear Rexperts, I have recently build R-2.3.0 from source on a Linux system and have encountered the following problem (perhaps not exactly a problem, but a minor display flaw): > demo() +------------here is how the output looks in less------------+ Demos in package <E2><80><98>base<E2><80><99>: is.things Explore some properties of R