this should work great. thanks
On Sun, Sep 5, 2010 at 8:34 PM, Joshua Wiley <jwiley.ps...@gmail.com> wrote:
> Hi Rajesh,
>
> This will work, unfortunately it seems like lapply() drops the names
> before it passes each element of the list which lead to my clumsy work
> around using which(). I'm sure there are other ways.
>
> dat <- list(INT = c("1","2","3"),
> NUM = c("2.34","4.56","6.78"),
> INT = c("4", "5", "6"),
> NUM = c("3.44"))
>
> ints <- which(names(dat)=="INT")
> nums <- which(names(dat)=="NUM")
>
> dat[ints] <- lapply(dat[ints], as.integer)
> dat[nums] <- lapply(dat[nums], as.numeric)
>
> str(dat)
>
> Cheers,
>
> Josh
>
> On Sun, Sep 5, 2010 at 6:33 AM, rajesh j <akshay.raj...@gmail.com> wrote:
> > The string vector actually comes as a part of a list, and the vector is
> > named "int", and the numbers are strings. I then have to make it a vector
> > that is still called "int" and has 4,5,6 etc. the types are either
> integer
> > or numeric. The number of items in the vector is unknown.
> >
> > here's an example,
> >
> > a list has vectors
> >
> > INT
> > "2"
> > "3"
> > "4"
> >
> > NUM
> > "2.37"
> > "4.56"
> >
> >
> >
> > On Sun, Sep 5, 2010 at 6:56 PM, David Winsemius <dwinsem...@comcast.net
> >wrote:
> >
> >>
> >> On Sep 5, 2010, at 9:22 AM, rajesh j wrote:
> >>
> >> for e.g., I get the following as a string vector
> >> "int" "4" "5" "6"
> >> after reading the first element, I have to convert this to a integer
> vector
> >>
> >>
> >>
> >> But what is the right answer? And what number of items are possble per
> >> line? And what are the other possible type identifiers? We need an
> example
> >> that has enough complexity to allow testing.
> >>
> >> --
> >> David.
> >>
> >>
> >>
> >> On Sun, Sep 5, 2010 at 6:44 PM, David Winsemius <dwinsem...@comcast.net
> >wrote:
> >>
> >>>
> >>> On Sep 5, 2010, at 8:48 AM, rajesh j wrote:
> >>>
> >>> Hi,
> >>>>
> >>>> Is it possible to convert a string vector to integer or numeric
> vector?
> >>>> In
> >>>> my situation I receive data in a string vector and have to convert it
> >>>> based
> >>>> on a given type.
> >>>>
> >>>
> >>> Can you give an example? I don't understand either what sort of
> conversion
> >>> you desire or what you mean by "convert it based on a given type."
> >>>
> >>> There are a couple of function you may want to consider but I am having
> >>> difficulty convincing myself they answer the problem posed:
> >>>
> >>> ?charToRaw
> >>> ?stroi
> >>>
> >>> > strtoi(charToRaw("123 this is a string"), base=16) # convert to
> >>> decimal ASCII
> >>> [1] 49 50 51 32 116 104 105 115 32 105 115 32 97 32 115 116
> 114
> >>> 105 110 103
> >>>
> >>> --
> >>>
> >>> David Winsemius, MD
> >>> West Hartford, CT
> >>>
> >>>
> >>
> >>
> >> --
> >> Rajesh.J
> >>
> >>
> >>
> >> David Winsemius, MD
> >> West Hartford, CT
> >>
> >>
> >
> >
> > --
> > Rajesh.J
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> Joshua Wiley
> Ph.D. Student, Health Psychology
> University of California, Los Angeles
> http://www.joshuawiley.com/
>
--
Rajesh.J
[[alternative HTML version deleted]]
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