you are right, it shows False for all variables. The use.value.labels switch is not on, it does not work also when I type number manually in notepad (csv) or excel.
Is there a way to force the variables to numeric? On 11 June 2012 12:23, William Revelle <li...@revelle.net> wrote: > Dear codecat, > To track down where the trouble is, try > > lapply(my.data,is.numeric) > > That will tell you which column of your data is giving you problems. > > It is possible that you read the data in from SPSS and did not turn off > the use.value.labels switch. > > > On Jun 11, 2012, at 1:55 AM, codec cat wrote: > > > Hi > > > > I keep having this error when I used omega(my.data) > > Error in cor(m, use = "pairwise") : 'x' must be numeric > > > > I'm quite sure my data is numeric as I have tried several methods such > as opening csv in notepad and make sure the number is not string, also > tried SPSS and make sure the numbers are set to numeric.. > > > > can somebody advice me what is wrong. > > > > > > > > Thanks. > > > > > > > > > > On 11 June 2012 04:17, William Revelle <li...@revelle.net> wrote: > > Dear "codecat" > > > > You can get the most recent version of psych from CRAN. The current > version is 1.2.4. > > > > Then, the help page for omega should be of use > > > > library(psych) > > ?omega > > > > In addition, try the vignette for the psych package. > > > > Or, as of today, there is a more detailed instruction for newbies on > using the psych package and R to find omega > > > > http://personality-project.org/r/tutorials/R_for_omega.pdf > > > > Let me know if any of this helps. > > > > Bill > > > > > > On Jun 10, 2012, at 4:00 PM, codec cat wrote: > > > > > Dear all > > > > > > I am a newbie to R and I would appreciate it very much if someone can > > > give me some advice on this. > > > > > > Please note that I am not a programmer so some of the questions might > > > sound really stupid. > > > > > > > > > I would like to compute McDonald's omega calculation using R, I'm > > > aware I can use the omega function in the psych package. > > > > > > But I'm really not sure how to do it. > > > > > > > > > I have read these two articles that explain about omega- > > > > > > > > > http://personality-project.org/r/html/omega.html and > > > http://personality-project.org/r/r.omega.html > > > > > > > > > But I'm still not sure how to do it. > > > > > > > > > Can someone correct me what I have gone wrong. > > > > > > > > > I'm following the instruction from this site and I have downloaded the > > > psych package- http://personality-project.org/r/ > > > > > > > > > *1. Load and read the data* > > > > > > > > > datafilename <- file.choose() # use the OS to find the file > > > > > > person.data <- read.table(datafilename,header=TRUE) #read the data > file > > > > > > > > > > > > *2. Use the code examples from > http://personality-project.org/r/r.omega.html* > > > > > > > > > Copy and paste the whole code from this website in the R console > > > > > > > > > > > > I know I must have understood Step 2 incorrectly, but I am really not > > > sure what to do with the omega function. > > > > > > > > > Can someone give me more specific help on this please. > > > > > > > > > Thanks. > > > > > > [[alternative HTML version deleted]] > > > > > > ______________________________________________ > > > R-help@r-project.org mailing list > > > https://stat.ethz.ch/mailman/listinfo/r-help > > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > > and provide commented, minimal, self-contained, reproducible code. > > > > > > > William Revelle > http://personality-project.org/revelle.html > > Professor > http://personality-project.org > > Department of Psychology http://www.wcas.northwestern.edu/psych/ > > Northwestern University http://www.northwestern.edu/ > > Use R for psychology http://personality-project.org/r > > It is 5 minutes to midnight http://www.thebulletin.org > > > > > > > > > > > > William Revelle > http://personality-project.org/revelle.html > Professor http://personality-project.org > Department of Psychology http://www.wcas.northwestern.edu/psych/ > Northwestern University http://www.northwestern.edu/ > Use R for psychology http://personality-project.org/r > It is 5 minutes to midnight http://www.thebulletin.org > > > > > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
