[R] gplots

[Warnes, Gregory R]

The plotmeans() function uses the order of the factor levels.  To change the order in the plot, change the order of the factor levels.

For example:

> data(state)
> plotmeans(state.area ~ state.region)   

Plots the groups in the order

levels(state.region)

> levels(state.region)
[1] "Northeast"     "South"         "North Central" "West"         

You can change the order of the levels using the gdata:::reorder.factor function:

> state.region <- reorder.factor(state.region, c("Northeast", "North Central", "South" "West")),

Now, doing 

> plotmeans(state.area ~ state.region)   

will show the plot with the new order.

-Greg


> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Stephen
> Sent: Monday, January 16, 2006 11:26 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] gplots
> 
> 
> Hi 
>  
> I am sure that this question has been asked before ... appologies in
> advance
>  
> This - which comes out very nicely - better than the commercial stuff.
> plotmeans (cdpy~Dodefordpy, Data = Dataset, connect = False, 
> minbar = 1,
> mean.labels = FALSE, col = "blue", barwidth = 1.5, barcol = "red",
> ci.label = FALSE, xlab="Onset", pch = 15, par(las =2)).
> 
> Only one snag I want to order the X axis by the way it is 
> sorted in the
> data not by the n size group categories.
> 
> The data are sorted by the Dodefordpy categories - not mumeric -
> confering to the way I'd like the x axis.
> 
> Hence how do I order the x axis not by n but by the way the file is
> ordered.
> 
>  
> 
> Thanks 
> 
> S
> 
>  
> 
> > version
>          _              
> platform i386-pc-mingw32
> arch     i386           
> os       mingw32        
> system   i386, mingw32  
> status                  
> major    2              
> minor    2.1            
> year     2005           
> month    12             
> day      20             
> svn rev  36812          
> language R              
> > 
> 
> 
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