[R] customizing the color and point shape for each line drawn using lattice's xyplot

[Ross Darnell]

Then you can regenerate the factor by

common.without.Method4 <- subset(common, Method!=4)

common.without.Method4 <- transform(common.without.Method4,
					Method = factor(Method))

Ross Darnell			

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Gen
Sent: Friday, 31 August 2007 1:42 AM
To: r-help at stat.math.ethz.ch
Subject: Re: [R] customizing the color and point shape for each line
drawn using lattice's xyplot


Thank you for your suggestion. Unfortunately it does not appear to
matter if
the data is subsetted before the xyplot command or within it.  The
problem
remains. 

I was able to remove method 4 entirely from the key by using your
suggestion
to subset the dataset "common," and then creating a new variable to
assign
labels for just this subset "common.without.Method4$method.not4.f"  The
resulting code was:

xyplot(MeanBxg ~ PercentVarExplained | bdg.f * bdx.f,
data=common.without.Method4, groups=method.not4.f, type="l",
auto.key=T)

This however leads to lack of continuity between plots, as when I
exclude
methods 4 and 6 in my second plot, using the same approach, the color
that
had corresponds to methods 7, 8 and 9 in plot one is automatically
changed
in plot two.  The subsetting may work, so long as I can dictate line
color
and symbol type in each plot. 



Ross Darnell wrote:
> 
> Does this help
> 
> common.without.Method4 <- subset(common, Method!=4)
> xyplot(MeanBxg ~ PercentVarExplained | bdg.f * bdx.f,
> data=common.without.Method4,
> groups=Method.f, type="l",  auto.key=T)
> 
> Ross Darnell
> 
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Gen
> Sent: Thursday, 30 August 2007 2:51 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] customizing the color and point shape for each line drawn
> using lattice's xyplot
> 
> 
> Description of what I am trying to do:
> I am using the xyplot code below to plot the variable "MeanBxg"
against
> the
> variable "PercentVarExplained" for all 9 possible combinations of
> variables
> "bdg" and "bdx".  Within each of these 9 scenarios I am plotting a
> separate
> line for each of up to 9 different methods that I used to estimate the
> variable MeanBxg. These methods are identified by the numeric variable
> called "Method."  Giving me one plot with 9 figures and each of the
> figures
> contains 9 lines. 
> 
> My problem arises because I would like to repeat the creation of this
> plot 8
> times, in each instance only a subset (eg 6) of the 9 methods are used
> (a
> different subset each time). 
> 
> What I can't figure out:
> I would like to learn how to specify the exact line color that
> corresponds
> to each method such that Method==1 will always be represented by the
> same
> color (in every plot that it appears in).  Where two methods that I
used
> were of the same family of methods (say method==1 and method==2 made
the
> same assumptions about the data)  I would like to, if possible,
> represent
> the two methods using the same color and distinguish them by the
symbol
> used
> to represent points on the line. 
> 
> My code as it currently stands:
> xyplot(MeanBxg ~ PercentVarExplained | bdg.f * bdx.f, data=common,
> groups=common$Method.f, type="l", subset= Method!=4, auto.key=T)
> 
> As the code is, the default colors assigned are repeated causing
> different
> methods to be represented by the same color with no way to distinguish
> them
> (I have not succeeded in plotting lines and points simultaneously).  
> 
> Side question: When I subset the data to particular methods, is there
a
> way
> to remove the excluded methods from the key as well? (in my code
> "Method" is
> a numeric variable, and "Method.f" corresponds to the lengthy
> descriptions
> of each method for the purpose of the key)
> 
> Thank you very much for your help. 
> Genevieve
> 
> 
> 
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> e-drawn-using-lattice%27s-xyplot-tf4351934.html#a12400517
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> 
> ______________________________________________
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