R help - Oct 2014 - Order of boxs in box plots

Hello,

I'm doing some box plots to look at the distributions of groundwater
results. It is plotting the well in the order of their IDs.  ie. MW1B then
MW3B then MW4A.....

 I would like to plot the wells in the order they are at the site such as MW1B
then WES-14-4-93 then ........  Is there a way I can control that??

My data and code are below.

Thank you for your time
David Doyle


MS <- read.table("http://www.doylesdartden.com/R/MS.csv",
header=TRUE,
sep=",",)
MSAmmoniax <- c("Well", "AMMONIA")
MSAmmonia <- MS[MSAmmoniax]

plot(MSAmmonia, notch=TRUE, ylab = "Ammonia (mg/L)", cex
1,col=(c("green","White","White","white","white","green")))
legend("topleft", inset=.002, title="Gradient",
       c("Up","Down"), fill=terrain.colors(2), horiz=TRUE,
cex = 0.7,)
title(main="Lower Mudstone Ammonia Box Plots")

	[[alternative HTML version deleted]]

On Oct 27, 2014, at 6:10 PM, David Doyle wrote:
> Hello,
> 
> I'm doing some box plots to look at the distributions of groundwater
> results. It is plotting the well in the order of their IDs.  ie. MW1B then
> MW3B then MW4A.....
> 
> I would like to plot the wells in the order they are at the site such as
MW1B
> then WES-14-4-93 then ........  Is there a way I can control that??
> 
> My data and code are below.
> 
> Thank you for your time
> David Doyle
> 
> 
> MS <- read.table("http://www.doylesdartden.com/R/MS.csv",
header=TRUE,
> sep=",",)
> MSAmmoniax <- c("Well", "AMMONIA")
> MSAmmonia <- MS[MSAmmoniax]
> 
Pretty much all plotting routines (base, lattice, gpplot2)  use the levels as
the ordering principle:

levels(MSAmmonia$Well) <- levels(MSAmmonia$Well)[c(1,6,2:5)]

> plot(MSAmmonia, notch=TRUE, ylab = "Ammonia (mg/L)", cex >
1,col=(c("green","White","White","white","white","green")))
> legend("topleft", inset=.002, title="Gradient",
>       c("Up","Down"), fill=terrain.colors(2),
horiz=TRUE, cex = 0.7,)
> title(main="Lower Mudstone Ammonia Box Plots")
> 	[[alternative HTML version deleted]]
> 
You should learn to post in plain text.
> ______________________________________________
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA