[R] subsetting key on qqmath

John Field JohnField at ozemail.com.au
Fri Oct 9 05:11:09 CEST 2009

Dear R list,

The code below puts qq-plots for two of three groups on the one 
plot.  However the legend includes all three groups, ie the auto.key 
ignores the subset instruction.  Is there an easy way to get around 
this, so that only those groups plotted are included in the legend?

y1<-rnorm(100); y2<-rnorm(100)+1; y3<-rnorm(100)+2; y<-c(y1,y2,y3)

Many thanks,
John Field

John Field Consulting Pty Ltd
10 High Street, Burnside SA 5066 Australia
Phone 08 8332 5294 or 0409 097 586
Fax   08 8332 1229
Email  JohnField at ozemail.com.au 
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