Feature request for as.Date() function 20)
An easy way is just to write your own function that will accept "NA", convert it to NA and then call as.Date. R is a functional language, so write some functions. Don't try to overload existing functions with new options that may break a lot of existing code. If you have special requirements, then adapt your code to them. You would probably have to wait around for a long time before an new option got in, so it is easier to create your own.
On Wed, Nov 25, 2009 at 4:40 PM, <nabble.30.miller_2555 at spamgourmet.com> wrote:
On Wed, Nov 25, 2009 at 2:56 PM, jim holtman - nabble.30.miller_2555 at spamgourmet.com <> wrote:
Seems to work fine in my testing:
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Similarly, the following command produces the same error: ? ?as.Date("NA") However, as.Date(NA) performs as documented. Can we enhance the as.Date() function to convert "NA" strings into NA value prior to type conversion?
I sincerely appreciate the help, but with all due respect, I have read the posting guide and did provide the minimal code necessary to reproduce the desired feature. To reiterate, I would like to be able to feed the character string "NA" to the as.Date() function to yield the same result as `as.Date(NA)`. Please advise if testing the following does not yield an error:
as.Date("NA");
This may or may not aid the read.csv() error message in my particular code (for which a workaround has already been identified). Thank you.
Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?