通常每个package都有自带的data,
供使用者演练熟悉,方便进一步套用自己的数据
function data()
Loads specified data sets, or list the available data sets.
若你想知道package tsDyn自带多少data sets,
可以用底下语法:
try(data(package = "tsDyn") ) # list the data sets in the tsDyn package
#Data sets in package `tsDyn'
IIPUs US monthly industrial production from Hansen (1999)
UsUnemp US unemployment series used in Caner and Hansen (2001)
barry Time series of PPI used as example in Bierens and Martins (2010)
zeroyld zeroyld time series
#####
data(zeroyld) #load data
data<-zeroyld #new data name
所以底下两者都能执行出结果
vecm.jo<-VECM(data, lag=2, r=1,include = "both",estim="ML")
vecm.jo
vecm.jo1<-VECM(zeroyld, lag=2, r=1,include = "both",estim="ML")
vecm.jo1


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