similar to: a little question about R

Hello sir: There are 2 questions about string. 1 How to calculate the width of a string? e.g string "abc"'s width is 3; 2 How can I get the "substring" in such kind of condition: "f:\\JPCS_signal.txt" "f:\\PC1_signal.txt" "f:\\PC2_signal.txt" What I wanna get is "JPCS" "PC1" "PC2".How can I achieve them by R

Hello sir: group1:1,2,3,4 group2:1,3,4,5 group3:2,4,8,9 .. ... group1000:9,3,8,2 I wanna get the "intersection set" and "union set". I've tried command "setdiff"and "union",but only two groups is permited.How can I deal with multi groups to find the "intersection set" and "union set"? Thanks a lot! My best

Hi all: I wanna know how to expoort ".xls" file. And in the exported ".xls" file, how to set different cells with different color? Thanks a lot! My best. ------------------------------ ******************************************* Xin Meng Capitalbio Corporation National Engineering Research Center for Beijing Biochip Technology BioPharma-informatics & Software

Hello sir: I use Rcmd to execute R code,such as : "C:\\Program Files\\R\\R-2.2.1\\bin\\Rcmd.exe" BATCH globalLowessRun.r globalLowessRun.r is a R function written by myself. But I wanna make the "globalLowessRun.r" changeable,such as globalLinearRun.r or gridbasedLowessRun.r,and so on. How can I achieve this goal via Rcmd.exe BATCH ? The only finding is: Rcmd BATCH

Hello sir: Here's a question: x<-1:5 y<-c(2,1,4) I wanna get the different elements between x & y,i.e. 3,5. How can I get the result(3,5) via R function? Thanks a lot for your help. My best! ------------------------------ ******************************************* Xin Meng Capitalbio Corporation National Engineering Research Center for Beijing Biochip Technology

Hello sir: As to the 2*2 table format for reporting results comparing a new test to true diagnosis,when I got the sensitivity and specificity,how can I calculate the exact 95% confidence intervals (based on the binomial distribution) for sensitivity and specificity via R? Thanks a lot! My best! ------------------------------ ******************************************* Xin Meng Capitalbio

Hello sir: Here's the result of repeated measures ANOVA. $"Error: Within" Df Sum Sq Mean Sq F value Pr(>F) t 2 524177 262089 258.24 1.514e-06 *** Residuals 6 6089 1015 --- Signif. codes: 0 `***' 0.001 `**' 0.01 `*' 0.05 `.' 0.1 ` ' 1 My question is: How to extract the F value only? If the result is a

Hello sir: a data with 2 columns: id x a 1 b 2 c 3 I wanna get such kind of plot: x: a b c y:1 2 3 But the plot command doesn't permit string character as x. How can I get it ? Thanks a lot ! My best

Hello sir: How can I perform McNemar (paired chi square test) by using R? Thanks! ------------------------------ ******************************************* Xin Meng Capitalbio Corporation National Engineering Research Center for Beijing Biochip Technology BioPharma-informatics & Software Dept. Research Engineer Tel: +86-10-80715888/80726868-6438 Fax: +86-10-80726790 Email??xmeng

As to the function"pnorm",the default degree of freedom(df) is infinite. I wanna know how to set the df as I want. Help on pnorm doesn't have df setting.The only choice are:"mean, sd, lower.tail, log.p",but no df. For instance: sample size=6 df=6-1=5 t value=9.143 I wanna to the corresponding p value by using function "pnorm". How can I do it? Thanks a lot

Hello sir: How can I read data file of EXCEL format from disk("d:\\data.XLS" for example)? I can only read data file of .txt format read.delim("d:\\data.txt",header=T,as.is=T),but only EXCEL format is available at present. Thanks a lot

Hello sir: Here's a question on covariance analysis which needs your help. There're 3 experiments,and x refers to control while y refers to experimental result. The purpose is to compare the "y" values across the 3 experiments. experiment_1: x:0.1 0.2 0.3 0.4 0.5 y:0.5 0.6 0.6 0.7 0.9 experiment_2: x:1 2 3 4 5 y:3 4 6.5 7.5 11 experiment_3: x:10 20 30 40 50 y:18 35 75 90

Thanks a lot for your timely rely. I still wonder whether I can use "a":"d" instead of 1:4. I remember I fulfill it successfully according to the guidance of some materials on R,but fail to find it now. Thanks again! ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

hi all: If there's a dataframe: x y 1 a 2 b 3 c The info of the data such as : name date author The result I want is: name date author x y 1 a 2 b 3 c In other words,I wanna add the info above the dataframe. How can I do it ? Thanks a lot! My best

Hi all: My data has 3 variables: age(3levels : <30y=1 30-50y=2, >50y=3) gender(Male=0, Female=1) CD4 cell count(raw lab measurement) y(1:death 0:alive) I perform logistic regression to find out the factors that influence y. result<-glm(y ~ factor(age) + factor(gender) + CD4,family = binomial) >From the result,I can get OR(Odds Ratio) of gender via exp(Estimate of Female,

Try colnames(df)[4:6] <- c("x","y","z") -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of xmeng at capitalbio.com Sent: 21 December 2004 09:45 To: r-help at stat.math.ethz.ch Subject: [R] about colnames Hello sir: If there's a data frame(with name "df"): a b c d e f

Hi all: As to hcluster,how can I control the cluster is performed according to rows(genes for instance) or columns(samples for instance)? I can't find the parameters for it. Thanks a lot! My best!

Hi all: My OS is 32bit winxp,but I wanna install 64bit R2.14.1. >From the following website,it says "You can also go back and add 64-bit components to a 32-bit install, or vice versa" http://cran.r-project.org/bin/windows/rw-FAQ.html#Can-both-32_002d-and-64_002dbit-R-be-installed-on-the-same-machine_003f Does it mean that I can install and run 64bit R2.14.1 under 32bit

I''m new here and I wanna make some marketing to Redcar Editor<http://redcareditor.com> . I have used this amazing editor for a while and I have to applaud it. It''s an excellent free (as in speech) alternative to TextMate. It''s made on Ruby (run on JRuby), so it has the heart of the Ruby community. It has support to TextMate Themes and Snippets, it''s very

We've been going through some growing pains fumbling through porting some custom C modules that used to live under apache 1.3 into the 2.0 spec, even though none of us really considers ourselves a 'C developer'. We've basically got them all working now under the 2.0 API, and the question was posed about whether or not we should consider attempting to upgrade everything to run