-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Andr?
TavaresCorr?a Dias
Sent: Wednesday, March 09, 2005 9:53 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Structural equation models with R
Hello useRs,
I`m running structural equation models with R, but for one of
my models the below error message apears. I`m trying to
change startvalues but without success. The manual for sem
package did not help me. Does anyone knows how to change
startvalues for iteration in sem package? Or it can be
another problem with the model?
Error in startvalues(S, ram, debug = debug, tol = start.tol) :
subscript out of bounds
The model (with three latent variables: 'reg','folha','solo'))
model.com=matrix(c(
'ridos>dendos', 'a1', NA,
'ridos>reg', 'a2', NA,
'ridos>folha', 'a3', NA,
'ridos>solo', 'a4', NA,
'ridos>raiz', 'a5', NA,
'dendos>litter', 'a6', NA,
'dendos>reg', 'a7', NA,
'litter>reg', 'a8', NA,
'folha>reg', 'a9', NA,
'solo>reg', 'a10', NA,
'raiz>reg', 'a11', NA,
'raiz>solo', 'a12', NA,
'folha>solo', 'a13', NA,
'reg>denjov', 'l1', NA,
'reg>riqjov', 'l2', NA,
'folha>nfolha', 'l3', NA,
'folha>pfolha', 'l4', NA,
'solo>nsolo', 'l5', NA,
'solo>psolo', 'l6', NA,
'riqjov<>riqjov', 'e1', NA,
'denjov<>denjov', 'e2', NA,
'litter<>litter', 'e3', NA,
'riqdos<>riqdos', 'e4', NA,
'dendos<>dendos', 'e5', NA,
'raiz<>raiz', 'e6', NA,
'nsolo<>nsolo', 'e7', NA,
'psolo<>psolo', 'e8', NA,
'nfolha<>nfolha', 'e9', NA,
'pfolha<>pfolha', 'e10', NA,
'reg<>reg', NA, 1,
'solo<>solo', NA, 1,
'folha<>folha', NA, 1),
ncol=3, byrow=TRUE)
obs.vars.com=c('riqjov','denjov','litter','riqdos','dendos','raiz',
'nsolo','psolo','nfolha','pfolha')
sem.com=sem(model.com,S.com,30,obs.vars.com)
-------------------------------
Andr? Tavares Corr?a Dias
Laborat?rio de Ecologia Vegetal
Departamento de Ecologia - IB
Universidade Federal do Rio de Janeiro
Ilha do Fund?o, CCS
Rio de Janeiro, RJ. Brasil
CEP 21941-590 CP 68020
Tel. (21)2562-6377