HI,
 I want to run simultaneous equation model. I installed packages sphet, spdep, and spse. I imported weight matrix from matlab. when I tried to run the model with these codes:
se <- spsegm(formula, data = pdata, w = W.txt, panel = TRUE, lags = list (c(TRUE, FALSE, FALSE, FALSE), c(FALSE, TRUE, FALSE, FALSE), c(FALSE, FALSE, TRUE, FALSE), c(FALSE, FALSE, FALSE, TRUE)), errors = list(FALSE, TRUE, TRUE, TRUE), endogenous = list(c(FALSE, TRUE, TRUE, TRUE), c(TRUE, FALSE, TRUE, TRUE), c(TRUE, TRUE, FALSE, TRUE), c(TRUE, TRUE, TRUE, FALSE)))

I get this error:

Error: could not find function "spsegm"

Note: I have four equations and I am using cross section data. 

I will really appreciate if someone can help me out.

Thanks

Saima 

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