search for: radiolog

I start with a dataframe called xrays. It contains scores on films from each of two radiologists. It is in "long" format. I used the reshape package to melt a data frame and then cast it into "wide" format, one line for each patient (identified by redlognumb) with scores from both radiologists for a given patient on the same line. I named the result of the casting xray...

...reason I have this stuff setup at all, is to be able to use clvmd. Is there any alternative out there that will let me keep using clvmd (or achieve similar functionality), without having to worry about cman constantly falling over ? Cheers, CS -- Christopher Smith UNIX Team Leader Nighthawk Radiology Services Limmatquai 4, 6th Floor 8001 Zurich, Switzerland http://www.nighthawkrad.net Sydney Fax: +61 2 8211 2333 Zurich Fax: +41 43 497 3301 USA Toll free: 866 241 6635 Email: csmith@nighthawkrad.net IP Extension: 8163 Sydney Phone: +61 2 8211 2363 Sydney Mobile: +61 4 0739 7563...

...question. I did search before asking, but perhaps my ineptitude didn't allow me to apply what I read to what I'm doing. Totally new to R, and haven't done any code in any language in a long time. Basically I've got categories. They're department codes for doctors (say, 9999 for radiology or 5555 for endocrinology), which of course means that there are a good number of them, i.e. it's not practical for me to write them all out as I usually see in examples of categorical variables (factors). And then I've got a list of doctors that I'm actually interested in. I have the...

I've decided to proceed down another path to solve this problem, at least until rsync is able. I've begun to code a perl script that keeps a lookup list of file and directory names to inodes. What will occur is the pointer list check will be run just before the rsync job and perform name changes and moves before rsync has it's chance. I've come to realize how complex this task is.

...1 vs 1e6). I had to supply starting values, because the automatic ones were not reasonable (1e19) and caused a "singular matrix" error. Is this possibly just a numerical issue? Thanks for any help! Baxter Rogers ======= begin R code ======= # 071702 Baxter P. Rogers (rogers at mr.radiology.wisc.edu) # # Self-contained demonstration of the sem package's failure to modify # covariances from their starting values. (This happens for numerical # or analytic gradient calculation.) Starting values are supplied # because the default ones cause a "singular matrix" error. # c...

...the change scores) using the SD of percentage change. Thank you very much, I am looking forward to your reply. With best wishes. Qiang Yue M.D. Visiting Scholar of IMHR, University of Ottawa 1145 Carling Avenue, K1Z 7K4, Ottawa, ON, Canada Tel: 613-722-6521 ext. 6554 Associate Professor of Radiology Department of Radiology, West China Hospital, Sichuan University Chengdu, 610041, China [[alternative HTML version deleted]]

Hi Everyone, I have a question regarding the construction of 3D graphs in 'R', BUT these graphs also need to illustrate movement (with time) of the prostate gland (using radiological techniques). I am not sure how to do this in 'R' although I'm sure there is some way of doing it. Below, I have copied and pasted some of the data with which I'm working on. The data are for axial images of the prostate for four patients (N1, N2, N3 and N4) over 20 time po...

...rs more easily. Do people have suggestions for the best way to do this? I am a novice to "R" but I do work with a couple of very knowledgeable statisticians who do most of the heavy statistical lifting for our research group. Many thanks, Max Max Gunther, PhD Vanderbilt University - Radiology Institute of Imaging Sciences - VUIIS Center for Health Services Research Nashville, TN www.ICUdelirium.org [[alternative HTML version deleted]]

I have a sun machine (solaris 8) with R 1.3.0 installed. I want to install tcltk libraries to add gui support. Could someone please point me to the appropriate instructions? Thank you for your help. -- John CAREW <carew at mr.radiology.wisc.edu> Functional MRI Research Group Radiology E3/311 600 Highland Ave. Madison, WI 53792-3252 Phone: (608)265-5742 Fax: (608)265-9840 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.ht...

Hi. I tried running the following code. I don't understand the error. mydata <- read.table("C:/dataForR/radiology/wordFrequencies.csv", header=TRUE, sep=",") > dim(mydata) [1] 982 924 mydataN<-mydata[,-923] > dim(mydataN) [1] 982 923 cor(mydataN) factanal(mydataN, factors=3) Error in solve.default(cv) : Lapack routine dgesv: system is exactly singular Thank you for looking at t...

...with getting panel.grid(h=-1) with stripplot. Can anyone show me how to make dotplot-like lines on a stripplot? Or how to jitter the vertical plotting position on a dotplot? Thanks, Mike -- Michael A. Miller mmiller3 at iupui.edu Imaging Sciences, Department of Radiology, IU School of Medicine

...y on that. On the other hand, it would be nice to have exactly the same plot for a presentation on a black background. A function to flip all the colors to suit the presentation format would be ideal. What is the best way to go about this using R? Thanks, Darren D.L. Weber, Ph.D. UCSF Dept. of Radiology [[alternative HTML version deleted]]

...uble", "integer", "int", "logical", + "complex", "character", "raw"))) what <- typeof(what) .Internal(readBin(con, what, n, size, signed, swap)) -- Jonathan D. Clayden, Ph.D. Research Fellow Radiology and Physics Unit UCL Institute of Child Health 30 Guilford Street LONDON WC1N 1EH United Kingdom t | +44 (0)20 7905 2708 f | +44 (0)20 7905 2358 w | www.homepages.ucl.ac.uk/~sejjjd2/ w | www.diffusion-mri.org.uk/people/1

...e problem. Note that we did quite strange things with the fedora platforms: include explicitely slapack to provide simple precision for our (vanilla) armadillo... Do you have any idea, or even known problem in mind, that could be related to this ? Best regards, -- Dr. Yann Richet Institute for Radiological Protection and Nuclear Safety (https://www.irsn.fr), Department of Characterization of Natural Unexpected Events and Sites Office?: +33 1 58 35 88 84

...kages: [1] tractor.session_1.0.0 tractor.base_1.0.3 tractor.nt_1.0.2 loaded via a namespace (and not attached): [1] tools_2.8.1 Regards, Jon (1) http://code.google.com/p/tractor/ (2) http://finzi.psych.upenn.edu/R/Rhelp02/archive/61872.html -- Jonathan D. Clayden, Ph.D. Research Fellow Radiology and Physics Unit UCL Institute of Child Health 30 Guilford Street LONDON WC1N 1EH United Kingdom t | +44 (0)20 7905 2708 f | +44 (0)20 7905 2358 w | www.homepages.ucl.ac.uk/~sejjjd2/

...d for plotting this sort of month by month frequency plot? For a single year I could histogram the month, but I'd like to be able to span any date range, including multiple years. Mike -- Michael A. Miller mmiller3 at iupui.edu Imaging Sciences, Department of Radiology, IU School of Medicine -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:...

...achieve an interactive session based on a predefined set of commands without writing a completely new front-end (overkill, surely?). Any guidance would be appreciated. Regards, Jon [1] http://finzi.psych.upenn.edu/R/Rhelp02a/archive/117412.html -- Jonathan D. Clayden, Ph.D. Research Fellow Radiology and Physics Unit UCL Institute of Child Health 30 Guilford Street LONDON WC1N 1EH United Kingdom t | +44 (0)20 7905 2708 f | +44 (0)20 7905 2358 w | www.homepages.ucl.ac.uk/~sejjjd2/

...ing message: Both x and y should be numeric in: xyplot( value ~ timestamp | subject ) I was sure I saw something like this on r-help recently, but I can't seem to track it down now. Can anyone help me out? Thanks, Mike - -- Michael A. Miller mmiller3 at iupui.edu Imaging Sciences, Department of Radiology, IU School of Medicine - __________________________________________________ Everything you'll ever need on one web page from News and Sport to Email and Music Charts -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci....

...ckage 'rimage' I am using FFTW version 3.1, fedora core 3 and R version 2.3.1 I noticed an old posting on the subject but the solution was to install FFTW which I already did but the error still persists. Thanks in advance John -- John Kornak, PhD Assistant Professor Departments of Radiology, and Epidemiology & Biostatistics University of California, San Francisco Box 0946 San Francisco, CA 94143 Tel: (415) 353-4740 fax: (415) 353-9423 Email: john.kornak at ucsf.edu

...trange things with the fedora platforms: include explicitely slapack to provide simple precision for our (vanilla) armadillo... > > Do you have any idea, or even known problem in mind, that could be related to this ? > > Best regards, > > -- > Dr. Yann Richet > Institute for Radiological Protection and Nuclear Safety (https://www.irsn.fr), > Department of Characterization of Natural Unexpected Events and Sites > Office?: +33 1 58 35 88 84 > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailma...