[R] Failed path analysis using sem package

Dear R users: I am trying to run a path analysis using sem package in R. But I have encountered one problem, below is my code: SEMEX-read.csv(D:/Documents and Settings/z3409964/Desktop/Hospital 1.csv) library(sem) cov.matrixSEMEX-cov(na.omit(SEMEX)) SEMEX-specifyModel() CWB-CWB13,NA,1

Re: [R] Failed path analysis using sem package

://socserv.socsci.mcmaster.ca/jfox/ -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of Yumeng Yue Sent: Sunday, September 15, 2013 8:31 AM To: r-help@r-project.org Subject: [R] Failed path analysis using sem package Dear R users: I am trying