Trim Leading/Trailing Missing Observations
Generic function for removing leading and trailing NAs.
na.trim(object, ...)
## Default S3 method:
na.trim(object, sides = c("both", "left", "right"),
is.na = c("any", "all"), maxgap = Inf, ...)object |
an object. |
sides |
character specifying whether |
is.na |
If "any" then a row will be regarded as |
maxgap |
maximum number of consecutive |
... |
further arguments passed to methods. |
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))
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