Hi,

I am new to R. How can I get labels/different colours on the lines in my 
xy-plots. I plot "het"  against "temp" conditional on "year"  and "station".

library(lattice)
MyLines <- function(xi, yi, ...){     #Draws line in the panels while 
avoiding spaghetti-plots
I <- order(xi)
panel.lines(xi[I], yi[I], col = 1)}
xyplot(het ~ temp | fstation, data = data1, groups = fyear, xlab = "temp", 
ylab = "heterocyst freq",
panel = panel.superpose,    #ensures that lines from all years (defined by 
"groups") from the same stations are superimposed in he same panel
panel.groups = MyLines)  #specifies which task should be carried out on the 
data defined by the "groups" option (here: "year")

When I call this, I cannot separate the lines from my different years. I 
would like them to have different colours/other markings (irrelevant for me) 
and identified on the side of the graph.

Thank's!
Anna Zakrisson Braeunlich
PhD Student

Department of Systems Ecology
Stockholm University
Svante Arrheniusv. 21A
SE-106 91 Stockholm

E-mail: anna@ecology.su.se
Tel work: +46 (0)8 161103
Mobile: +46-(0)700-525015
Web site: http://www.ecology.su.se/staff/personal.asp?id=163

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