RE: [R] Sem error - subscript out of bounds

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From: John Fox (jfox@mcmaster.ca)
Date: Wed 12 May 2004 - 10:41:50 EST


Message-id: <20040512004148.PFXI20511.tomts20-srv.bellnexxia.net@JohnDesktop8300>

Dear Leonard,

There are no error variances defined for the endogenous variables in the
model. Have you read the document that describes how sem() works (at
http://socserv.socsci.mcmaster.ca/jfox/Books/Companion/appendix-sems.pdf)?
If not, that might help you specify the model. It should also help to study
the examples in ?sem.

The soon-to-be-released next version of the sem package will print a more
informative error message for this kind of error.

I hope that this helps,
 John

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch
> [mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of Leonard assis
> Sent: Tuesday, May 11, 2004 7:12 PM
> To: r-help@stat.math.ethz.ch
> Subject: [R] Sem error - subscript out of bounds
>
>
> What´s happening with this following code:
>
> require(sem)
> Celpe.Mod.RAM <- matrix(c(
> # path
> parametro Inicio
> "Produção -> T1",
> "gamma.11", NA,
> "Produção -> T2",
> "gamma.12", NA,
> "Produção -> T3",
> "gamma.13", NA,
> "Produção -> T4",
> "gamma.14", NA,
> "Compreensão -> T1",
> "gamma.21", NA,
> "Compreensão -> T2",
> "gamma.22", NA,
> "Compreensão -> PI",
> "gamma.23", NA,
> "Certificado -> Produção",
> "alpha.11", NA,
> "Certificado -> Compreensão",
> "alpha.12", NA,
> "Compreensão <-> Produção",
> "alpha.21", NA
> ),
> ncol=3, byrow=TRUE)
>
> Celpe.cov <- cov(Celpe.Dados.Fatorial[3:7]) Celpe.cfa.sem <-
> sem(ram=Celpe.Mod.RAM, S=Celpe.cov,
> N=1443,refit=TRUE,debug=TRUE)
>
> Here comes the Results:
>
> > Celpe.cfa.sem <- sem(ram=Celpe.Mod.RAM, S=Celpe.cov,
> N=1443,refit=TRUE,debug=TRUE)
>
> observed variables:
> [1] "1:T1" "2:T2" "3:T3" "4:T4" "5:PI"
>
>
> latent variables:
> [1] "6:Produção" "7:Compreensão" "8:Certificado"
>
>
> parameters:
> [1] "1:gamma.11" "2:gamma.12" "3:gamma.13" "4:gamma.14"
> "5:gamma.21"
> "6:gamma.22" "7:gamma.23" "8:alpha.11" "9:alpha.12"
> [10] "10:alpha.21"
>
>
> RAM:
> heads to from parameter start
> [1,] 1 1 6 1 NA
> [2,] 1 2 6 2 NA
> [3,] 1 3 6 3 NA
> [4,] 1 4 6 4 NA
> [5,] 1 1 7 5 NA
> [6,] 1 2 7 6 NA
> [7,] 1 5 7 7 NA
> [8,] 1 6 8 8 NA
> [9,] 1 7 8 9 NA
> [10,] 2 6 7 10 NA
> Error in startvalues(S, ram, debug = debug, tol = start.tol) :
> subscript out of bounds
> > Celpe.cov
> T1 T2 T3 T4 PI
> T1 1.2459212 0.6072653 0.6410553 0.4030267 0.7001731
> T2 0.6072653 0.9369251 0.5762526 0.3293337 0.6282211
> T3 0.6410553 0.5762526 1.5346904 0.3888291 0.6064140
> T4 0.4030267 0.3293337 0.3888291 0.5377340 0.3840199 PI
> 0.7001731 0.6282211 0.6064140 0.3840199 1.9750506
> > version
> _
> platform i386-pc-mingw32
> arch i386
> os mingw32
> system i386, mingw32
> status Patched
> major 1
> minor 9.0
> year 2004
> month 04
> day 28
> language R
> >
>
> []s
> Leonard Assis
> Estatístico / CONFE 7439
> UIN : 41-764-523 / Skype : lmassis / msn : lmassis@msn.com
>
> ______________________________________________
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> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html

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