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22 results for “from:Chung-hong Chan”

Shading area under PDF of t -distribution
Chung-hong Chan · Nov 1, 2007 · r-help

Dear R experts, I have plot the PDF of t distribution with df = 74. curve(dt(x,df=74),from=-4, to=4) how can I shade the area under curve (for example, col="red") from t=+- 1.996? Thank...

Date and selection
Chung-hong Chan · Jun 19, 2007 · r-help

Dear R experts, Suppose I have a data.frame recording the date and test results of some subjects like this: Name Date results John 01/01/1991 2 John 02/01/1991 3 John 09/0101991 4 Micheal 02/01...

Proxy Under Mac OS X
Chung-hong Chan · May 31, 2007 · r-help

Dear R programmers, I can only config. proxy under Mac OS X terminal and launch R under Terminal by Terminal: export http_proxy="http://un:pw at proxy.com:port" Under R: >chooseCRANmirror(graphics=FALSE) >update.packages() I don't...

How to modify function for list
Chung-hong Chan · Oct 3, 2007 · r-help

Yes, I tried. Wrong calculation. On 10/3/07, Stefan Grosse <singularitaet at gmx.net> wrote: > On Wednesday 03 October 2007 08:23:15 Chung-hong Chan wrote: > CC > > CC > Suppose I have a long list of age, gender and...

P-value
Chung-hong Chan · Oct 3, 2007 · r-help

ks.test(x,y)[2] On 10/3/07, Emre Unal <emre.unal at gmail.com> wrote: > How can i print only the P-Value of the kolmogorov smirnov test? > > > > ks.test(VeriSeti1, VeriSeti2) > > Two-sample Kolmogorov-Smirnov test > > data...

dev.off()
Chung-hong Chan · Nov 21, 2007 · r-help

png function is used for producing png format (Portable Network Graphics) of image. you need to use the postscript() function to generate a ps graph. Refer to: http://stat.ethz.ch/R-manual/R-patched/library/grDevices/html/postscript.html...

cronbach's alpha
Chung-hong Chan · Nov 13, 2007 · r-help

alpha.scale (psych) cronbach (multilevel) On Nov 14, 2007 7:33 AM, raymond chiruka <rtchiruka at yahoo.com> wrote: > hie > 1...i'm trying to carryout a relibility testusing cronbach's alpha what fuctin do i use. > > 2.. this is...

Simple question about function with glm
Chung-hong Chan · May 6, 2007 · r-help

Dear all, I coded a function called u.glm u.glm <- function (x,ahi,age,bmiz,gender) { library(nortest) lil.rslt <- lillie.test(x) if (lil.rslt$p.value >0.05) { cat("Logtrans=0, lillie=",lil.rslt$p.value,"\n...

[R-pkg-devel] Disable parallelism on installation time
Chung-hong Chan · Jul 17, 2024 · r-package-devel

To add to this, I would like to point out that extendr actually has a guide on how to make an R package with Rust code CRAN compliance. https://github.com/extendr/rextendr/blob/main/vignettes/articles/cran-compliance.Rmd...

Cumulative Frequency table
Chung-hong Chan · Sep 24, 2007 · r-help

Dear R gurus, I think this question is very trivial, but I search around the HELP file and this maillist can come up with no answer. Suppose I have a vector called AGE like this > sort(AGE) [1] 30 34...

OT - use of R
Chung-hong Chan · Aug 14, 2007 · r-help

A quick search of google scholar found 2556 cites to the classic paper by Ihaka et al. http://scholar.google.com/scholar?hl=en&lr=&cites=15992947024900415641 On 8/15/07, Andy Bunn <Andy.Bunn at wwu.edu> wrote: > Hello...

How to load a big txt file
Chung-hong Chan · Jun 6, 2007 · r-help

Easy solution will be split your big txt files by text editor. e.g. 5000 rows each. and then combine the dataframes together into one. On 6/7/07, ssls sddd <ssls.sddd at gmail.com> wrote: > Dear list, > > I...

How to modify function for list
Chung-hong Chan · Oct 2, 2007 · r-help

Dear R Gurus, I have a function which calculate the BMI standard deviation score based on the age and gender specific L, M, S value. I have written a function like this bmisds <- function (age, gender, bmi){ if (age ==1...

Installing R on Mac OS X Leopard
Chung-hong Chan · Nov 5, 2007 · r-help

I answered a similar question this morning. "Refer to R Mac SIG list, the mpkg installer in 2.6 binary is broken in Leopard. Until an updated version is release, you can install R by install each package in "Packages...

recommended package/docs for analyzing multiple choice tests
Chung-hong Chan · Sep 18, 2007 · r-help

Hello. I think "Using R for psychology research" maybe useful for you. http://www.personality-project.org/r/r.guide.html On 9/19/07, Doug Holton <doug00 at gmail.com> wrote: > Hi, > What package would you recommend for analyzing...

install problem 2.6 mac os x 10.5
Chung-hong Chan · Nov 4, 2007 · r-help

Refer to R Mac SIG list, the mpkg installer in 2.6 binary is broken in Leopard. Until an updated version is release, you can install R by install each package in "Packages" folder one by one. Hope it helps...

Simple question about function with glm
Chung-hong Chan · May 6, 2007 · r-help

Thank you akk. I know it is not statistically sounded to check the distribution of response before glm. I will check the distribution of xmodel$residuals later on. About the program problem. It can print summary(xmodel) but not confint...

Meta-Analysis of proportions
Chung-hong Chan · Jun 28, 2007 · r-help

OpenBUGS should be something related to Bayesian statistics. You may refer to Chapter 12 of Handbook http://cran.r-project.org/doc/vignettes/HSAUR/Ch_meta_analysis.pdf It talks about meta-regression. On 6/28/07, Monica Malta <momalta...

[R-pkg-devel] cpp11 and "non-API calls to R"
Chung-hong Chan · Jul 11, 2024 · r-package-devel

Not from CRAN, also not in a position to opine on cpp11 status, but I wrote about it recently. My solution for readODS back then was to vendor cpp11 and remove the SET_LENGTH call manually, like . But back then...

R's Spearman
Chung-hong Chan · May 28, 2007 · r-help

Hi, You can try with cor.test(rank(y[1]),rank(y[2])) On 5/29/07, Raymond Wan <rwan at kuicr.kyoto-u.ac.jp> wrote: > > Hi all, > > I am trying to figure out the formula used by R...

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