Re: [R] Line plot using xyplot function in lattice package

From: Sundar Dorai-Raj <sundar.dorai-raj_at_pdf.com>
Date: Fri 18 Mar 2005 - 07:27:02 EST

Ghosh, Sandeep wrote on 3/17/2005 1:25 PM:
> Hi All,
>
> For the following data when I use xyplot in package lattice the intervals are in the order of 2, 24, 8, but instead I want them to be in the order 2, 8, 24.
>
> Treatment Interval value
> A 2 0.448
> A 24 1.85
> A 8 1.166
> B 2 1.074
> B 24 1.5
> B 8 1.065
> C 2 0.854
> C 8 0.589
>
> The R script is xyplot(value ~ Interval, data=studyData, type='b', groups = Treatment,
>
> Is there a way in xyplot to specify the order?.
>
> -Sandeep

Hi Sandeep,

You can make Interval an ordered variable:

studyData$Interval <- ordered(studyData$Interval, c("2", "24", "8")) xyplot(value ~ Interval, data=studyData, type='b', groups = Treatment)

--sundar



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