search for: concaton

Displaying 3 results from an estimated 3 matches for "concaton".

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2012 Jul 09
1
c(a, b) for POSIXct objects with tzone attributes?
Hello: What is the recommended method for retaining the tzone attributes when concatonating POSIXct objects? > (d1 <- ISOdate(1970,1,1)) # Sets the tzone attribute = GMT [1] "1970-01-01 12:00:00 GMT" > (d1.2 <- c(d1, d1)) # c(..) strips the tzone attribute, displays in the time zone of the operating system [1] "1970-01-01 04:00:00 PST" "1970-01-...
2003 Sep 22
1
Managing a list with a list
...the dead trees it returns a list with all the trees living and dead (as I'm sure it is supposed to): tf[tf$Living == T] What am I doing wrong? I'm happy to RTFM, but if the manual in question is section 3.4 of R-lang then I'm still going to need help. I can break it all apart and then concatonate a new list but that seems heavy handed. Thanks, Andy
2006 Apr 09
12
Validating two models from one form
Howdy, I''m working on my first RoR project, and I want to build a form. The tricky thing is, this form needs to insert / update against two models, each with their own validation rules. Unfortunately, I''m having an incredible amount of difficulty with the error handling, specifically the fields wrapped in <div class=''fieldWithErrors''></div>