[R] Subsetting within xyplot()
David Afshartous
dafshartous at med.miami.edu
Tue Feb 26 20:46:44 CET 2008
All,
I'm having problems w/ a simple attempt to subset an xyplot.
The first plot below is a plot of y versus x for certain values of a third
categorical variable z. Now I'd like to further restrict this to certain
values of variable y. Neither of the two attempts below work. Any
suggestions much appreciated. (note: I don't want to merely use ylim since
I have a loess plot and I want this to be calculated w/ the restricted
values).
Thanks,
David
y = c( 0.4, 0.6, -0.1, 0.3, 0.3, -0.2, 0.7, 0.7, 0.2, 0.0, 0.9,
-0.1, 0.6, -1.1, 0.8, -1.0, 0.4, 0.1, 0.7, -0.2, -0.1, -0.1, 2.2,
0.7, 1.1, 0.2, -0.2, -0.9, 0.4, 0.1, -0.3, -0.4)
x = c(4.1000, 4.9600, 1.2000, 3.9000, 3.1875, 1.9000, 1.8625,
0.7650, 1.5750, 2.4700, 1.6250, 1.5500, 2.3125, 1.3125, 1.0600,
-0.5500, 1.1000, 0.0200, -0.0375, 3.4600, 2.5250, 2.0950, 0.8000,
1.6050, -0.4150, -0.7300, 1.1550, 1.4850, 2.2000, 2.2500, 0.6000,
2.1000)
junk.frm = data.frame(x, y, z = rep(c("D", "P"), 16))
xyplot(y ~ x , data = junk.frm[junk.frm$z =="D",], type = c("g", "p",
"smooth"), pch = 20)
xyplot(y ~ x , data = junk.frm[junk.frm$z =="D",], type = c("g", "p",
"smooth"), pch = 20,
, subset = junk.frm[junk.frm$y < 2, ])
Error in tmp[subset] : invalid subscript type 'list'
xyplot(y ~ x , data = junk.frm[junk.frm$z =="D",], type = c("g", "p",
"smooth"), pch = 20,
data = junk.frm[junk.frm$y < 2 & junk.frm$z =="D", ])
Error in xyplot(y ~ x, data = junk.frm[junk.frm$z == "D", ], type = c("g",
:
formal argument "data" matched by multiple actual arguments
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