Thanks Josh. I'm quite new, just wondering re:factor levels?

In this example (shamelessly stolen from the internet):

*schtyp*

[1] 0 0 1 0 0 0 1 0 1 0 1 1 1 1 0 0 1 1 1 0

*schtyp.f <- factor(schtyp, labels = c("private", "public"))

schtyp.f*

[1] private private public private private private public private public
[10] private public public public public private private public public
[19] public private


Levels: private public



in my data i have a table:

        var1    var2     var3
cell1    x       x         x
cell2    x       x         x
cell3    x       x         x
cell4

.
.
.
.
cell100


and i have a subset of those cells that are interesting to me as a list of
data
list1 = ["cell1, "cell5",cell19", "cell50", "cell70"]

is it possible to create (similar to above):

*schtyp.f <- factor(schtyp, labels = c("special", "normal"))

so that when i plot this data, i can color the items in list1 as one
color (eg all the special cells are red), and the rest of the items as
a second color (eg all the other cells are black/blue)?

Syb
*



On Tue, Mar 13, 2012 at 11:48 AM, Joshua Wiley <jwiley.psych@gmail.com>wrote:

> Hi Sybil,
>
> You cannot turn a list into a factor.  You could do:
>
> cell_data <-c('cell1','cell2')
> factor_list <- factor(cell_data)
>
> or if you already have a list, unlist() or as.vector() may convert it
> into a vector that you can then convert to a factor.
>
> Cheers,
>
> Josh
>
> On Tue, Mar 13, 2012 at 4:29 AM, sybil kennelly <sybilkennelly@gmail.com>
> wrote:
> > Hello can anyone help please?
> >
> > i read two words "cell1", "cell2" into a list. I want to turn this list
> > into a factor.
> >
> >> cell_data <-list(c('cell1','cell2'))
> >
> >
> >> cell_data
> > [[1]]
> > [1] "cell1" "cell2"
> >
> >
> >
> >> factor_list <- factor(cell_data)
> > Error in sort.list(y) : 'x' must be atomic for 'sort.list'
> > Have you called 'sort' on a list?
> >
> >
> >
> >> sort.list(cell_data)
> > Error in sort.list(cell_data) : 'x' must be atomic for 'sort.list'
> > Have you called 'sort' on a list?
> >
> >
> > Can anyone explain?
> >
> > Syb
> >
> >        [[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
> Programmer Analyst II, Statistical Consulting Group
> University of California, Los Angeles
> https://joshuawiley.com/
>

	[[alternative HTML version deleted]]

