[R] Multiline and grouping in R

[Jim Lemon]

On 06/30/2010 10:42 AM, Pablo Cerdeira wrote:
> Hi All,
>
> this is my first mail here.
>
> I'm trying to plot a multiline chart grouping values with no success. I have
> read a lot in the official Wiki and also searched via Google, but I did not
> find anything.
>
> I'm importing some data from a cvs file. Here is a sample:
>
> YEAR,AREA,CASES
> 1988,CONTRACTS,286
> 1988,INTERNATIONAL,189
> 1988,FAMILY,385
> 1988,TAXATION,177
> 1989,CONTRACTS,233
> 1989,INTERNATIONAL,431
> 1989,FAMILY,425
> 1989,TAXATION,201
> 1990,CONTRACTS,190
> 1990,INTERNATIONAL,302
> 1990,FAMILY,303
> 1990,TAXATION,209
> ...
>
> "t<- read.csv("file.csv", header=TRUE)"
>
> So far so good...
>
> But the problem is: I'd like to create a multiline plot, one line per AREA,
> showing the evolution of the number of CASES per YEAR.
>
Hi Pablo,
Just to give you another option, if your data frame is "pcdf":

library(plotrix)
newpcmat<-cbind(pcdf$CASES[pcdf$YEAR==1988],
  pcdf$CASES[pcdf$YEAR==1989],
  pcdf$CASES[pcdf$YEAR==1990])
colnames(newpcmat)<-c("1988","1989","1990")
rownames(newpcdf)<-c("CONTRACTS","INTERNATIONAL","FAMILY","TAXATION")
bumpchart(newpcmat,col=1:4,rank=FALSE,
  main="Number of cases by year")
boxed.labels(rep(2.5,3),c(400,300,200),c(400,300,200))

Jim