Or Duek wrote:
Ok,
It seems that the problem lays in the order (as Ista mentioned),
But, when I ask R to order it he chooses to order it by size and not by the
specific order I mentioned when I built the vector.
Is it possible to tell him to keep the order as mentioned?
Thank you.
You're still not completely clear about how you built the factor, but I
venture a guess:
Notice that factors tend to get their levels in alphabetical order,
unless special tricks are used.
> d <- data.frame(f=c("rare", "medium","well-done"))
> d$f
[1] rare medium well-done
Levels: medium rare well-done
To get the cast in order of appearance, this can be used:
> d$f <- factor(d$f, levels=unique(d$f))
> d$f
[1] rare medium well-done
Levels: rare medium well-done
On Sun, Feb 21, 2010 at 6:16 PM, Ista Zahn <istaz...@gmail.com> wrote:
Hi Or,
I can't know for sure what your problem is without an example, but the
first thing I would do is check to make sure that your labels are
stored as an ordered factor (and that the order is correct). See
?factor for details.
Best,
Ista
On Sun, Feb 21, 2010 at 10:57 AM, Or Duek <ord...@gmail.com> wrote:
Hi,
I created a simple data frame with one factor and one numerical variable.
The factor was actually a vector of names of techniques to trimm reaction
time data.
I want to create a plot that shows the value of F test for every trimming
method.
So the data frame has its trim factor (who has those labels
"mean","2500","2000","1500","1000","log","inverse","1SD","2SD")
and the numerical variable of the data frame has the F values for each
one
of those trimming method.
When I ask R to plot it, it doesn't keep the order of the trimm verctor
correctly and the plot confuses the order so the most left one will be
1500
and then 1SD etc.
The values are correct but it is important for me to keep it in the same
order I built it.
How can I do it?
Thank you very much,
Or D.
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Ista Zahn
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University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org
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O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
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