dynformula, pht, plm.data, and pvcovHC are
deprecated functions which could be removed from plm in a near future.
an object of class "plm",
further arguments.
a vector (of length one or two) indicating the (individual and time) indexes (see Details);
a formula,
a list containing the lag structure of each variable in the formula,
a vector (or a list) of logical values indicating whether variables should be differenced,
a vector (or a list) of logical values indicating whether variables should be in logarithms.
a data.frame,
dynformula was used to construct a dynamic formula which was the
first argument of pgmm. pgmm uses now multi-part formulas.
pht estimates the Hausman-Taylor model, which can now be estimated
using the more general plm function.
plm.data is replaced by pdata.frame.
pvcovHC is replaced by vcovHC.
detect_lin_dep was renamed to detect.lindep.