[R] trellis.graphic in for-loop

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From: Alexander.Herr@csiro.au
Date: Fri 04 Apr 2003 - 16:04:30 EST


Message-id: <2FE6D3D02CCDD211B80600902745F56C018D129E@exchange-tv.tvl.qld.csiro.au>

Hi list,

I am unsuccessfully trying to produce a serious of trellis barcharts from
within a for-loop. The barcharts work outside the loop. What am I missing?
Example attached.

Thanks Herry

#XXXXXXXXXXXXXXXXXXXXXX

trellis.device(bg="white")
trellis.par.get("fontsize")->fontsize
fontsize$default<-16
trellis.par.set("fontsize",fontsize)

a<-c(1,2,4,5,4,3,3,3)
b<-c(2,5,1,1,1,3,3,3)
c<-c(3,5,1,2,2,5,5,5)
as.data.frame(cbind(a,b,c))->q21
varnames<-colnames(q21)
i<-9999
for (i in 1:3) {
round(table(q21[,i])/sum(table(q21[,i])),3)*100->z1
 as.data.frame.table(table(q21[,i]))->z1
  round(z1[,2]/sum(z1[,2]),3)*100->z1[,2]
   colnames(z1)<-c(varnames[i],"y")
   xnames<-levels(z1[,1])
    paste(xnames[1]," - low",sep="")->xnames[1]
     paste(xnames[length(xnames)]," - high",sep="")->xnames[length(xnames)]
  z1[,1]<-xnames
 as.factor(z1[,1])->z1[,1]
barchart(
  horizontal=FALSE,
   z1[,2]~z1[,1],
    ylab=list("% frequency",cex=1.5),
     main=list(varnames[i],cex=1.25),
    scales=list(1,cex=1.5), col="#ffd18f",
   sub=list("Rating",cex=1.25)
        )
filename<-paste("test",i,"_q21k.jpg",sep="")
#dev.print(jpeg, filename , width=1000, height=1000, quality=100,
bg="white", pointsize=20)
}

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