similar to: New Package blockrand

This is to announce an updated version of the blockrand package has been uploaded to CRAN. The blockrand package is used for creating randomizations for clinical trials or other studies where random assignments are made one at a time. It implements the ideas of randomizing within blocks so that the numbers of subjects in each group remain fairly balanced (but allows for unbalanced blocks to make

This is to announce an updated version of the blockrand package has been uploaded to CRAN. The blockrand package is used for creating randomizations for clinical trials or other studies where random assignments are made one at a time. It implements the ideas of randomizing within blocks so that the numbers of subjects in each group remain fairly balanced (but allows for unbalanced blocks to make

Hello R people, I am looking to pay someone to help write some R code. Inputs: Study identifier: ID Number for the study, each ID number is for one study only each block set should only be used for that study. This will require that you store the results from the blocks someplace on the file system. Trait #1: dichotomous rural / urban Trait #2: dichotomous sick / healthy Assignment Ratio:

Have you read the books by Cleveland? His experiments show that most people do better estimating things and comparing things on a linear scale rather than looking at angles and areas (also see http://biostat.mc.vanderbilt.edu/twiki/pub/Main/StatGraphCourse/graphsco urse.pdf) With a dot chart you can set the axis to go from 0 to the total of all groups (see the example I sent before, it could

If you plan to include your graphics in LaTeX files then you should really look at the Sweave function in the utils package. This approach may work better for you and make these questions not matter anymore. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at intermountainmail.org (801) 408-8111 -----Original Message----- From: r-help-bounces at

You may want to rethink your whole approach here: 1. Pie charts are usually a poor choice of graph, there are better choices. 2. Adding percentages to a pie chart is a way of admitting that the pie chart is not doing the job. 3. If you want people to compare percentages, then a table is what is needed. 4. A pie chart with percentages added is essentially a colorful but poorly layed out table.

Thanks for doing this Thomas, I have been thinking about what it would take to do this, but if it were left to me, it would have taken a lot longer. Back in the 80's there was a statistical package called RUMMAGE that did all computations based on sufficient statistics and did not keep the actual data in memory. Memory for computers became cheap before datasets turned huge so there

Hi, I’m new to R (just installed today) and I’m trying to figure out how to do stratified randomisation using it. My google search expedition has lead me to believe that blockrand package will most probably be the answer to it. I’ve played around with blockrand for awhile and tried the sample code: library(blockrand) ##stratified by sex male <- blockrand(n=100,

I have been trying to create code to calculate the power for an adaptive design with a survival endpoint according to the method of Schafer and Muller ('Modification of the sample size and the schedule of interim analyses in survival trials based on interim inspections,' Stats in Med, 2001). This design allows for the sample size to be increased (if necessary) based on an interim look at

On 5/2/07, r-help-request@stat.math.ethz.ch < r-help-request@stat.math.ethz.ch> wrote: > > Send R-help mailing list submissions to > r-help@stat.math.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit > https://stat.ethz.ch/mailman/listinfo/r-help > or, via email, send a message with subject or body 'help' to >

Hello, list why not add the smart proposal by Greg Snow as a built-in function in {stats}, just changing the "x234" and "newc" lines to allow for more distributions to be generated ? Or do I miss an already existing function to do that ? Regards. Olivier # slight modification of the original code by Greg Snow [mailto:Greg.Snow at intermountainmail.org] # on April 04, 2007

This is a general question about Design of experiments. If i am not allowed to post general questions like this here please accept my apologies and ignore the question. I did a DOE with six factors in eight runs. I know i cannot check for interactions using this design, but i tried the interaction plot and it showed me many interactions. After this I foldover the design and ran the 8 runs to learn

This is a minor documentation bug. In the document: Writing R Extensions (R-exts) section 1.6.5 (Summary -- converting an existing package) the 3rd bullet is missing the end of the sentence. Thanks, --please do not edit the information below-- Version: platform =3D i386-pc-mingw32 arch =3D i386 os =3D mingw32 system =3D i386, mingw32 status =3D=20 major =3D 2 minor =3D 6.1 year =3D

This is to announce that versio 2.0 of the TeachingDemos package is now on CRAN (and hopefully soon to a mirror near you). This is a major upgrade of the package, some of the improvements include: The package now uses an NAMESPACE so it is easier to load just the parts that you need. Some of the GUI demonstrations now use tkrplot so that the graph is in the same window as the controls (there

This is to announce that versio 2.0 of the TeachingDemos package is now on CRAN (and hopefully soon to a mirror near you). This is a major upgrade of the package, some of the improvements include: The package now uses an NAMESPACE so it is easier to load just the parts that you need. Some of the GUI demonstrations now use tkrplot so that the graph is in the same window as the controls (there

I think SAS Macros has capability to call R, and execute it without it being in the picture anywhere. So you can use SAS Macros in a file called R.sas In this you can create a macro called %Describe that can call R , load Hmisc ,run the describe function Note you will need repeated use of %put in this %describe for the mapping to take place Use %INCLUDE to include that file in all SAS

Here is a demonstration of behaviour that is probably an optimization by someone far smarter than me that did not anticipate anyone wanting to do this, but for my purposes it looks more like a bug than a feature. I have tested this with R2.6.2 on Windows, no additional packages loaded (beyond the default), I have tested using the default graphics object, pdf, jpeg, and cairoDevice (ok I loaded a

Thank you, Greg, and also to Scott Ellison, who replied privately. I am in the process of trying out both suggestions. After I sent my initial message, I came across the Systemfit package, which allows specification of constraints on parameters. In theory, this should solve my problem perfectly. However, I was not able to get it to work with my data, as every attempt yielded the following

I currently have a data set describing human subjects enrolled into an international clinical trial, the name of the hospital enrolling this human subject, the date when the subject was enrolled, and a vector with variables representing characteristics of the site (e.g., number of beds in a hospital). my data sets looks like this: subject hospital date_enrollment hospital_beds 1 hospitalA

I am glad to help. The pp program is the main tool to use to create the executable. -----Original Message----- From: "Duncan Murdoch" <murdoch at stats.uwo.ca> To: "Greg Snow" <Greg.Snow at intermountainmail.org> Cc: "Gabor Grothendieck" <ggrothendieck at gmail.com>; "Doran, Harold" <HDoran at air.org>; "r-help at