Displaying 1 result from an estimated 1 matches for "dec_mean_evi".
2010 Oct 25
1
structural equation modeling in sem, error, The model has negative degrees of freedom = -3, and The model is almost surely misspecified...
...covariance matrix between these variables as per
the following:
>S_matrix = matrix(c(
>+ 0.003083259, 0, 0,
>+ 0.143870284, 89.7648490, 0,
>+ 0.276950919, 81.3484101, 215.3570157
> ), ncol = 3, byrow = T)
>rownames(S_matrix) = colnames(S_matrix) = c("dec_mean_EVI", "density",
"ALL_Jack1")
I then construct a model using a symbolic ram specification as follows
>tmodel <- specify.model()
>dec_mean_EVI -> density, gam1, NA
>density -> ALL_Jack1, gam2, NA
>dec_mean_EVI -> ALL_Jack1, gam3, N...