search for: timberlak

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2008 Jun 30
3
Is there a good package for multiple imputation of missing values in R?
...imputed values replaced (I don't have Herrell's book). Any pointers would be appreciated. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2011 Jun 05
3
How to convert a factor column into a numeric one?
...rder given by levels(df$Temp) instead of the sort order in the recode() 2nd argument. Any hints? ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2007 Sep 10
1
S-Plus "resample" package and associated functions
...ample() function in R doesn't provide equivalent flexibility of bootstrap() and bootstrap2(). ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2008 Sep 25
1
R function which finds confidence interval for binomial variance
...package with R function that computes a reasonable confidence interval for v or v'? Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2010 Jun 21
2
Singularity in simple ANCOVA problem
...sted R-squared: 0.535 F-statistic: 3.532 on 5 and 6 DF, p-value: 0.07811 Why the NA's here? ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2010 Oct 16
1
Color not displaying when using an autowatchr script
When running RSpec 2.0.0.beta22, I would get colour output in the console from my specs Now, with 2.0.0 no color is used. If I run the rspec command directly, color is displaying again. I have --color in my .rspec file Andrew Timberlake -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/rspec-users/attachments/20101016/31ff5b4b/attachment.html>
2008 Apr 01
1
Testing workers
...functional tests that rely on Backgroundrb? I didn''t find anything on the Backgroundrb website not on a couple of Google searches. Links would be fine. I keep getting the following error in my functional tests: "Error while connecting to the backgroundrb server" Thanks Andrew Timberlake andrew at andrewtimberlake.com 082 415 8283 skype: andrewtimberlake "I have never let my schooling interfere with my education." --Mark Twain
2009 Sep 03
1
Problem accessing functions in package 'roxygen'
...a similar problem with trim.right(), trim.left() and other functions I've tried. Any ideas? ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2008 Apr 10
1
Problem installing and using package "tseries"
...t is 36,864 bytes and looks superficially okay. Any ideas as to what's wrong here? Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2008 Apr 22
2
Multidimensional contingency tables
...t seem appropriate, as it has no means of using 'count'. This must be a common problem. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2009 Apr 13
4
Creating Methods in the Model?
Hey Everyone. First day diving in to ROR and Ruby... My question is how do you define methods with in the model class and/or should I even be doing this? It is my understanding that you should put as much of the business logic into the model as possible. I want to do some data manipulation before I things are submitted to the database IE (Create a variable out of two submitted via form, as
2008 Aug 25
1
Specifying random effects distribution in glmer()
...he right package and function? 3. What am I doing wrong? Any help would be appreciated. Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2007 May 03
4
Survival statistics--displaying multiple plots
Hello all! I am once again analyzing patient survival data with chronic liver disease. The severity of the liver disease is given by a number which is continuously variable. I have referred to this number as "meld"--model for end stage liver disease--which is the result of a mathematical calculation on underlying laboratory values. So, for example, I can generate a Kaplan-Meier plot
2009 Jan 23
3
Bug regarding ActiveRecord and TimeWithZone
I''ve discovered a strange behavior regarding ActiveRecord and TimeWithZone I''ve seen the error when using SQL Server, I have not yet tried with any other database. Here''s output from the console - "User" is a simple model made with a migration. ----------------------------------------- >> d1 = User.find(:first).created_at => Thu, 21 Jun 2001
2008 Jul 12
5
shapiro wilk normality test
Hi everybody, somehow i dont get the shapiro wilk test for normality. i just can?t find what the H0 is . i tried : shapiro.test(rnorm(5000)) Shapiro-Wilk normality test data: rnorm(5000) W = 0.9997, p-value = 0.6205 If normality is the H0, the test says it?s probably not normal, doesn ?t it ? 5000 is the biggest n allowed by the test... are there any other test ? ( i know qqnorm
2007 Apr 25
0
Use of Lexis function to convert survival data to counting format
...#39;start' and 'stop', of which arguments I am apparently clueless as to the meaning. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2007 Jul 23
0
Conditional logistic regression on n:m matched "cohort" data
...t ~ lab + strata(specimen), method="exact", data=mydata) all that is required? Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2007 Jul 23
0
Conditional logistic regression on n:m matched "cohort" data [Corrected]
...method + strata(specimen), method="exact", data=mydata) all that is required? Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"
2007 Aug 24
1
chi-square statistics
I'm wondering if R has functions to return pvalues with given x-squares and df. I googled for it but couldn't seem to find one. Appreciate any helps here. An example: df=4, x<- c(33.69, 32.96, 30.90) which are the statistic for chi-square, I'd like to get the corresponding pvalues for each values in x. Thanks. -Karen [[alternative HTML version deleted]]
2007 Oct 18
0
Getting 'tilting' confidence intervals in R
...Also, use of any other packages to accomplish the tilting interval would also be useful. Thanks. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral at lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire"