Get the names of the indexes
This function extract the names of the indexes or the name of a specific index
idx_name(x, n = 1, m = NULL) ## S3 method for class 'dfidx' idx_name(x, n = NULL, m = NULL) ## S3 method for class 'idx' idx_name(x, n = NULL, m = NULL) ## S3 method for class 'xseries' idx_name(x, n = NULL, m = NULL)
x |
a |
n |
the index to be extracted (1 or 2, ignoring the nesting variables) |
m |
if > 1, a nesting variable |
if n is NULL, a named integer which gives the posititon
of the idx column in the dfidx object, otherwise, a
character of length 1
Yves Croissant
data("JapaneseFDI", package = "mlogit")
JapaneseFDI <- dplyr::select(JapaneseFDI, 1:8)
JP1b <- dfidx(JapaneseFDI, idx = list("firm", c("region", "country")),
idnames = c("japf", "iso80"))
# get the position of the idx column
idx_name(JP1b)
# get the name of the first index
idx_name(JP1b, 1)
# get the name of the second index
idx_name(JP1b, 2)
# get the name of the nesting variable for the second index
idx_name(JP1b, 2, 2)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.