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SEM modelling
2 messages · Simo Vundla, John Fox
Dear Simo, Apparently the input covariance matrix is a list rather than a numeric matrix. Without the input that you specified, it's not possible to know for sure what you did, but I suspect that you used the object returned by hetcor() in the polycor package rather than the polychoric correlation matrix extracted from this object -- i.e., object$correlations. I hope this helps, John
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
Behalf Of Simo Vundla Sent: May-25-09 10:12 AM To: r-help at r-project.org Subject: [R] SEM modelling Dear All, I am trying to run a program using SEM and the input data is a covariance matrix (polychoric correlations). However I get an error message which
says:
is.triangular(S) : (list) object cannot be
coerced
to 'double' Do not know what the problem is. Have done something almost similar
without
any problems. Thanks very much Simo [[alternative HTML version deleted]]