警告信息,我有一个问题,运行此PLM模型:PLM模式 “内” - R中
我的数据(例如):
country=c(1,1,1,2,2,2,3,3,3)
year=c(1,2,3,1,2,3,1,2,3)
a=c(1,4,6,3,5,8,4,5,7)
b=c(8,5,7,2,7,4,9,7,1)
matrix=cbind(country, year, a, b)
matrix=plm.data(matrix)
我运行如下回归方程:
reg=plm(a~year+b, data=matrix, index=NULL, model="within")
summary(reg)
,并获得以下警告信息:[1]
Warning messages:
1: In if (is.na(le)) { :
the condition has length > 1 and only the first element will be used
2: In if (is.na(le)) " __no length(.)__ " else if (give.length) { :
the condition has length > 1 and only the first element will be used
3: In if (le > 0) paste0("[1:", paste(le), "]") else "(0)" :
the condition has length > 1 and only the first element will be used
有什么不对?
该代码在pkg:plm版本1.4-0中用'plm.data'引出错误。 –
@ user3237581:你发现了更多关于这个错误的信息吗?我对此非常感兴趣。 – majom