Re: [R] sem problem - did not converge

2011-02-14 Thread John Fox
Dear Felipe, Without the data or the input covariance or correlation matrix it's not possible to say much. sem() would have complained if the input moment matrix weren't positive-definite, so your check of the eigenvalues of the matrix isn't providing additional information. If you haven't al

Re: [R] sem problem - did not converge

2011-02-14 Thread Jeremy Miles
You have a fairly large and complex model there. This sort of model (almost) always causes problems. I would try fitting one factor at a time. That might help you to narrow down the problem. If one factor doesn't converge, the whole model won't converge. You might also consider joining the str

[R] sem problem - did not converge

2011-02-14 Thread Felipe Bhering
Someone can help me? I tried several things and always don't converge I am making a confirmatory factor analysis model. # Model library(sem) dados40.cov <- cov(dados40,method="spearman") model.dados40 <- specify.model() F1 -> Item11, lam11, NA F1 -> Item31, lam31, NA F1 -> Item36, lam36, NA F1

[R] sem problem - did not converge

2011-02-14 Thread Felipe Bhering
Someone can help me? I tried several things and always don't converge I am making a confirmatory factor analysis. # Model library(sem) dados40.cov <- cov(dados40,method="spearman") model.dados40 <- specify.model() F1 -> Item11, lam11, NA F1 -> Item31, lam31, NA F1 -> Item36, lam36, NA F1 -> I

[R] sem problem - did not converge

2011-02-14 Thread Felipe Bhering
Someone can help me? I tried several things and always don't converge # Model library(sem) dados40.cov <- cov(dados40,method="spearman") model.dados40 <- specify.model() F1 -> Item11, lam11, NA F1 -> Item31, lam31, NA F1 -> Item36, lam36, NA F1 -> Item54, lam54, NA F1 -> Item63, lam63, NA F1

[R] sem problem - did not converge

2011-02-14 Thread Felipe
Someone can help me? I tried several things and always don't converge I am making a confirmatory factor analysis model # Model library(sem) dados40.cov <- cov(dados40,method="spearman") model.dados40 <- specify.model() F1 -> Item11, lam11, NA F1 -> Item31, lam31, N