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supplying
2009 May 29
1
Error messages/systemfit package
...u help me please to understand the problem?
Remark1: Please note that in my estimation, the variables tsyud1, tsupp1, tsupp2, tsupp3, and tsyus1 are lagged variables.
Remark2: When I try to estimate each one of my two equations separately using the sem package, I also have an error message:
supplyreg <- tsls(tscn ~ tsyn + tsqn + tsksn + tsucp, ~ tsupp1 + tsupp2 +
tsupp3 + tsyus1 + tsupf + tsd1 + tsyud1 + tspo + tssn + tsupp + tsus +
tsus1 + tsyn + tsqn + tsksn)
summary(supplyreg)
Error in solve.default(crossprod(Z))"Lapack routine dgesv: system is exactly singular"
Do the two e...