Error in as.POSIXct.default(x) : Don't know how to convert `x' to class
"POSIXct"
In addition: Warning message:
is.nan() applied to non-(list or vector) in: fn(obj)
- this seems to be because it is calling:
is.na.POSIXlt(NULL)
Error in as.POSIXct.default(x) : Don't know how to convert `x' to class
"POSIXct"
is.na.POSIXlt(NA) gives the same error, and there's nothing on NA's or
NULL's in the documentation for the POSIX{l,c}t functions. It seems that
errors in these functions cause 'stop()' calls rather than returning NA's.
Barry
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