character specifying whether NAs are to be removed from
both sides, just from the left side or just from the right side.
is.na
If "any" then a row will be regarded as NA if it has
any NAs. If "all" then a row will be regarded as NA
only if all elements in the row are NA. For one dimensional
zoo objects this argument has no effect.
...
further arguments passed to methods.
Value
An object in which leading and/or trailing
NAs have been removed.
# examples of na.trim
x <- zoo(c(1, 4, 6), c(2, 4, 6))
xx <- zoo(matrix(c(1, 4, 6, NA, 5, 7), 3), c(2, 4, 6))
na.trim(x)
na.trim(xx)
# using na.trim for alignment
# cal defines the legal dates
# all dates within the date range of x should be present
cal <- zoo(,c(1, 2, 3, 6, 7))
x <- zoo(c(12, 16), c(2, 6))
na.trim(merge(x, cal))