2010/4/22 Allin Cottrell <cottrell(a)wfu.edu> > > On Tue, 20 Apr 2010, denis joubert wrote: > > > how to do lags like the ihm when learning a model with libgretl ? > > What is "ihm"? >
it's human-machine interface, a graphical interface (ihm is not in the right order because I was thinking in french, sorry). > > > is it equal to create new columns shifted with n element (where n is the > > lag) like this : > > real data lags1 lags2 > > 7 8 4 > > 8 4 1 > > 4 1 5 > > 1 5 > > 5 > > Sorry, but I can't make sense of this without further explanation. > I would expect something like this: > > t data lag1 lag2 > 1 100 - - > 2 102 100 - > 3 107 102 100 > 4 110 107 102 > 5 115 110 107 > > I finaly understood how to do lags with libgretl using laggenr_from_to function, and now i have something functionnal now. documentation of libgretl need experimentations to understand how to use some functions like laggenr_from_to, i discovered it add lag variable without need of allocations of the dataset. Despite some black hole into the documentations (like the content of data structures), libgretl is a great library. thanks for this work. Allin Cottrell > > > _______________________________________________ > Gretl-users mailing list > Gretl-users(a)lists.wfu.edu > http://lists.wfu.edu/mailman/listinfo/gretl-users >
2010/4/22 Allin Cottrell <cottr...@wfu.edu>
it's human-machine interface, a graphical interface (ihm is not in the right order because I was thinking in french, sorry).
I finaly understood how to do lags with libgretl using laggenr_from_to function, and now i have something functionnal now.
documentation of libgretl need experimentations to understand how to use some functions like laggenr_from_to, i discovered it add lag variable without need of allocations of the dataset.
Despite some black hole into the documentations (like the content of data structures), libgretl is a great library.
thanks for this work.
What is "ihm"?
On Tue, 20 Apr 2010, denis joubert wrote:
> how to do lags like the ihm when learning a model with libgretl ?
it's human-machine interface, a graphical interface (ihm is not in the right order because I was thinking in french, sorry).
Sorry, but I can't make sense of this without further explanation.
> is it equal to create new columns shifted with n element (where n is the
> lag) like this :
> real data lags1 lags2
> 7 8 4
> 8 4 1
> 4 1 5
> 1 5
> 5
I would expect something like this:
t data lag1 lag2
1 100 - -
2 102 100 -
3 107 102 100
4 110 107 102
5 115 110 107
I finaly understood how to do lags with libgretl using laggenr_from_to function, and now i have something functionnal now.
documentation of libgretl need experimentations to understand how to use some functions like laggenr_from_to, i discovered it add lag variable without need of allocations of the dataset.
Despite some black hole into the documentations (like the content of data structures), libgretl is a great library.
thanks for this work.
Allin Cottrell
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