> Q1. > > Right now I like to know how to get the dual coding working on the points on > a dotplot and also annotate these in a key. Specifically I'm attempting to > code the fill of the points by a variable called 'Commodity' but would like > have different symbols to refelect a second variable called 'Year' (say > square, triangle and circle for different years).
You can custumize pch as to reflect the levels of "Year" in both your dotplot and key my.pch<- 1:length(levels(Cal_dat$Year)) ### for example Then, use my.pch in the places of pch in your codes of dotplot and key HTH Weidong Gu > My code so far is as follows: > > ## initalise > library("lattice") > > ##read the data to a variable > Cal_dat <- read.table("Calibration2.dat",header = TRUE,sep = "\t",) > > ## set up plotting colours for the fills > col.pat<-c("violet","cyan","green","red","blue","black","yellow") > > ##set up the plot key to be inside the plot > plot.key<-list( > corner=c(1,0), > text=list(levels(Cal_dat$Commodity)), > title="Ore type", > points=list(pch=21,cex=1.3,fill=col.pat,col="black") > ) > > ##set some parameters for the dotplot > trellis.par.set( > dot.line=list(col = "transparent"), > axis.line=list(col = "grey90"), > axis.text=list(col ="grey50", cex=0.8), > panel.background=list(col="grey98"), > par.xlab.text= list(col="grey50") > ) > > ## Create the dot plot > dotplot(reorder(Mine, Resc_Gt)~ Resc_Gt,groups=Commodity, > data=Cal_dat, > cex=1.2, > pch=21, > aspect=2.0, > key=plot.key, > col="black", > fill=col.pat, > origin=0, > type = c("p", "h"), > main = "Resource Tonnage", > xlab= "tonnes (billions)" > ) > > The dot plot so far is attached as well as the input data. > > Q2 > > I'm puzzled by the waring message (below) I get when runnin the current code > as follows (What does this mean and why does it occur). > > "Warning message: > In trellis.par.set(dot.line = list(col = "transparent"), axis.line = > list(col = "grey90"), : > Note: The default device has been opened to honour attempt to modify > trellis settings" > > Q3 > > Can anybody recommend a good 'starters' book for learning plotting in R that > is reasonably clear on the basics. My primary interest is the graphing > tools that are in lattice (hence trying the Deepayan Sarkar book), but I'm > finding this guide rather tough going. > > Thanks in advance - MarkM > > http://r.789695.n4.nabble.com/file/n3758248/Calibration2.dat > Calibration2.dat > http://r.789695.n4.nabble.com/file/n3758248/Ranked_boxplot_by_commodity.png > Ranked_boxplot_by_commodity.png > > -- > View this message in context: > http://r.789695.n4.nabble.com/Dot-plot-with-two-grouping-variables-concurrently-tp3758248p3758248.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.