similar to: about McNemar

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: 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: 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

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

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: 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: 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

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: 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

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: 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

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: 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

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

Hello, I am hoping someone can clarify why I might obtain a quite different value in R & SPSS for a McNemar test I ran. Firstly, here is the R syntax & output R OUTPUT > mctest <- as.table(matrix(c(128,29,331,430), + ncol =2, dimnames = list(group=c("preMHT","postMHT"), + assault=c("yes","no")))) > mctest assault

Hello all, I wish to perform a mcnemar test for a 3 by 3 matrix. By running the slandered R command I am getting a result but I am not sure I am getting the correct one. Here is an example code: (tt <- as.table(t(matrix(c(1,4,1 , 0,5,5, 3,1,5), ncol = 3)))) mcnemar.test(tt, correct=T) #And I get: McNemar's Chi-squared

Hello,sir: Here's a little question about R which needs your help.Thanks in advance. If I wanna make a sequence just like a,b,c,d (In other words,a vector consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it as following: c("a","b","c","d") and the result is:[1] "a" "b" "c"

Does anyone know of another version of the Mcnemar test that provides: 1. Odds Ratios 2. 95% Confidence intervals of the Odds Ratios 3. Sample probability 4. 95% Confidence intervals of the sample probability Obviously the Odds Ratios and Sample probabilities are easy to calculate from the contingency table, but I would appreciate any help on how to calculate the confidence

Hello all I wish to perform a mcnemar.test() for a 5X5 matrix. Wikipedia tells me (http://en.wikipedia.org/wiki/Cochran_test) I should turn to cochran.test. The only place I found it was in the "outliers" package, but the command cochran.test() acts differently then mcnemar.test() , and doesn't take a table as input. Any ideas on how to use it ? #Example code: aa =

I am working with the mcnemar.test function and the help does not show a maintainer/author, but it is part of the stats package. My issue is that I want to use the test on 2 variables with possible values of 0:3, in one of the tests one of the variables does not have any 3's, so to make sure that the matrix is square I do: > x <- factor(x, levels=0:3) > y <- factor(y, levels=0:3)