[R] scaling axes when plotting multiple data sets

[davidr@rhotrading.com]

min, max, and range (and many other functions) take the na.rm parameter
to ignore NAs, but the Infs must be removed by hand as far as I know:

dat <- c(data1,data2,data3,data4)
dat <- dat[(dat!=Inf)&(dat!=(-Inf))]
rng <- range(dat, na.rm=TRUE)
then use xlim = rng

-- David Reiner

-----Original Message-----
From: Benjamin M. Osborne [mailto:Benjamin.Osborne at uvm.edu] 
Sent: Wednesday, February 16, 2005 4:04 PM
To: r-help at stat.math.ethz.ch
Subject: [R] scaling axes when plotting multiple data sets


1) When adding additional data sets to a plot using "plot" followed by
"lines",
is there a way to automate the scaling of the axes to allow for all data
sets
to fit within the plot area?

2) I attempted to solve this by setting
xlim=c(min(c(data1,data2,data3)),max(c(data1,data2,data3)))
however, there are some NAs and Infs in these data sets, and min(data1)
and
max(data1) both return NA, as with data2 and data3.  (These are time
series).

Thank you,
Ben Osborne

-- 
Botany Department
University of Vermont
109 Carrigan Drive
Burlington, VT 05405

benjamin.osborne at uvm.edu
phone: 802-656-0297
fax: 802-656-0440

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