[R] Need help imputing missing data using mice and outputting them

2007-05-10 Thread John Smith
Hello! I am trying to impute missing data and output the results of the imputation. My data set is called: MyData. I have a bunch of variables all of which start with Q20_ - and some of them have missing values. Here is what I've been doing: imputationmodel-mice( MyData[ c (grep(Q20_,

[R] creating a path diagram in sem

2007-04-11 Thread John Smith
Hello, I finally run my measurement model in sem - successfully. Now, I am trying to print out the path diagram that is based on the results - but for some reason it's not working. Below is my script - but the problem is probably in my very last line: # ANALYSIS OF ANXIETY, DEPRESSION, AND

[R] sem is not taking the model

2007-04-11 Thread John Smith
A strange problem with sem: I downloaded the sem library and then, I specified my simple measurement model (below). I highlighted it and ran it. It ran, but it did NOT tell me 22 lines read. And nothing works after that - it looks like it runs, but it does not produce anything... Did I make a

Re: [R] sem is not taking the model

2007-04-11 Thread John Smith
Thanks a lot - I did not realize one had to hit return after running it (or leave an extra empty line below it). It works! Dimitri - Original Message From: John Fox [EMAIL PROTECTED] To: John Smith [EMAIL PROTECTED] Cc: r-help@stat.math.ethz.ch Sent: Wednesday, April 11, 2007 5:20:11 PM

Re: [R] sem vs. LISREL: sem fails

2007-04-10 Thread John Smith
From: John Fox [EMAIL PROTECTED] To: John Smith [EMAIL PROTECTED] Cc: r-help@stat.math.ethz.ch Sent: Monday, April 9, 2007 9:46:03 PM Subject: RE: [R] sem vs. LISREL: sem fails Dear Dimitri, You haven't done anything wrong: Your model is a straightforward confirmatory factor analysis

[R] sem vs. LISREL: sem fails

2007-04-09 Thread John Smith
I am new to R. I just tried to recreate in R (using sem package and the identical input data) a solution for a simple measurment model I have found before in LISREL. LISREL had no problems and converged in just 3 iterations. In sem, I got no solution, just the warning message: Could not

RE: [R] duplicate row.names

2003-07-17 Thread John Smith
] Sent: Wednesday, July 16, 2003 9:50 PM To: John Smith; [EMAIL PROTECTED] Subject: RE: [R] duplicate row.names I think you need to be a bit more specific for us to be able to help you. At least provide a toy problem which replicates the error. Does this do what you want? dat1 - data.frame (x=rnorm

[R] duplicate row.names

2003-07-16 Thread John Smith
I am looping over many data files and reading in the data with F - read.table(filename)to read in a 22000 by 15 matrix. Works fine on the first matrix F, but I get the following error when the second file is read into F: Error in row.names-.data.frame(*tmp*, value = row.names) :