[R] Multiple density plots

[hadley wickham]

On Mon, Mar 10, 2008 at 3:55 PM, Sean MacEachern <sean.maceach at gmail.com> wrote:
> Hi all,
>
>  I'm interested in doing a multiple density plot on a number of columns in a
>  dataframe.
>
>  >DF
>
>      lineA.1  lineA.2   lineB.1  lineB.2
>  r1  5.355354 6.665575 10.288498 11.74750
>  r2  3.643415 5.427600 11.407112 13.97065
>  r3  5.813674 6.438502  9.628871 11.57456
>  r4  5.241340 5.125049 10.456221 12.35381
>  r5  4.640885 8.635518  8.344704 11.98484
>  r6  4.559852 6.416171 10.419599 10.89247
>  r7  4.058033 7.378469  9.043280 11.88214
>  r8  3.439271 5.108395 10.197870 10.65987
>  r9  5.129664 4.326907  8.851552 11.46618
>  r10 4.258742 7.002541  8.716967 13.07019
>
>
>
>  I have been reading about the simple.densityplot
>
>  However, I can't find it in R has it been replaced?
>
>
>
>  >simple.densityplot(line6.1,line6.2,line7.1,line7.2, data = DF)
>  Error: could not find function "simple.densityplot"

You could also try:

install.packages("ggplot2")
library(ggplot2)

qplot(value, data = melt(DF), colour=variable, geom="density")

which will give you a nice legend as well.

-- 
http://had.co.nz/