Hi all:
My data:
      f1      f2  f3   f4         y
1  -4.45   3  6.44 3.72    1
2  25.66 121 39.03 3.55 0
3  -9.75  12 11.77 3.40   1
4 -12.09  17 13.75 3.33   0
5  -3.53   4  6.47 3.24      0
6  13.18  69 26.55 3.20    1
... ...
I want to plot f1 for y=0 and 1; f2 for y=0 and 1...and the same as f3,f4.
And I want to get 4 plots at once(2*2)
 
My code:
par(mfrow=c(2,2))
densityplot(~f1,data=dat,group=y,auto.key=T)
densityplot(~f2,data=dat,group=y,auto.key=T)
densityplot(~f3,data=dat,group=y,auto.key=T)
densityplot(~f4,data=dat,group=y,auto.key=T)
 
The result is not what I want,since it produce 1 plot a time,but not 4 plots together(2*2).
Maybe something wrong with par(mfrow=c(2,2))?
Any suggestion? Many thanks!

Best.
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