Hi, in this morning i run the confirmatory factor analysis in lavaan. After assigning latent variable, exogenous variable, variance and covariance, when i run the CFA, it show some problem as under:-
fit<-lavaan(tpb_model, data=baisalamtpb)
Error: Must extract column with a single valid subscript.
x The subscript var.idx[i] can't be NA .
Run rlang::last_error() to see where the error occurred.
Here are the whole factors :-
tpb_model <- '
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bi =~ attitude + sn + pbc
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attitude =~ farm_sustainability + food_security + farm_production + farm_revenues + agri_inputs
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sn =~ prefer_baisalam + think_baisalam + favor_baisalam
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pbc =~ control_decision + financial_capability
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residual variance observed variables
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farm_sustainability ~~ farm_sustainability
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food_security ~~ food_security
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farm_production ~~ farm_production
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farm_revenues ~~ farm_revenues
-
agri_inputs ~~ agri_inputs
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prefer_baisalam ~~ prefer_baisalam
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think_baisalam ~~ think_baisalam
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favor_baisalam ~~ favor_baisalam
-
control_decision ~~ control_decision
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financial_capability ~~ financial_capability
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factor variances
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attitude ~~ attitude
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sn ~~ sn
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pbc ~~ pbc
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bi ~~ bi
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factor covariances
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bi ~~ attitude + sn + pbc
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attitude ~~ pbc + sn
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sn ~~ pbc + att
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attitude ~~ sn
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attitude ~~ pbc
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sn ~~ pbc'