Displaying 2 results from an estimated 2 matches for "alphapetically".
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2012 Oct 11
3
Sorting a data frame by specifying a vector
...:
df.. <- data.frame(Season=rep(c("Summer","Fall","Winter","Spring"),4),Obs=
runif(length(rep(c("Summer","Fall","Winter","Spring"),4))))
I want to sort the data frame by the seasons but in the order I specify
since alphapetically would not put the season in sequential order
I tried the following and a few other things but no dice. It looks like I
will have to convert to factors. Any thoughts? Thanks
df.. <-
df..[sort(as.factor(Df..$Season,levels=c("Summer","Fall","Winter","Spring&q...
2009 Jun 13
2
Help on Regular EXpression
hi
i need to validate user input for my designation field .
that field should accept(alphapets,numbers,-,&)
example => System support - Trainee
could u people help me with the reqular expression.
Thanks for any helps
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