I'd suggest you first combine the 12 data.frames into one, using
melt() from the reshape package.
makeDummy <- function(.){ # since you don't provide a reproducible
example
data.frame(x=letters[1:10], y=rnorm(10))
}
listOf12DataFrames <- lapply(1:12, makeDummy)
library(reshape)
dm <- melt(listOf12DataFrames, id="x")
str(dm) # each original data.frame is identified by the integer L1
with(subset(dm, x=="a"),
plot(L1, value, t="l"))
baptiste
On 18 May 2009, at 13:17, Steve Murray wrote:
Dear R Users,
I have 12 data frames, each of 12 rows and 2 columns.
e.g. FeketeJAN
MEAN SUM_
AMAZON 144.4997874 68348.4
NILE 5.4701955 1394.9
CONGO 71.3670036 21196.0
MISSISSIPPI 18.9273250 6511.0
AMUR 1.8426874 466.2
PARANA 58.3835497 13486.6
YENISEI 1.4668313 592.6
OB 1.4239179 559.6
LENA 0.9342164 387.7
NIGER 4.7245709 826.8
ZAMBEZI 76.6893794 8665.9
YANGTZE 10.6759257 1729.5
I want to do a line plot of the value of Amazon 'Sum' (in this case,
68348.4) for each of the 12 data frames. I've tried doing this as
follows:
plot(FeketeJAN[1,2], FeketeFEB[1,2], FeketeMAR[1,2], *through to
December* type="l")
but receive: Error in strsplit(log, NULL) : non-character argument
I've also tried:
plot(FeketeJAN$AMAZON[,2], FeketeFEB$AMAZON[,2], *through to
December* type="l")
but receive:
Error in plot.window(...) : need finite 'xlim' values
In addition: Warning messages:
1: In min(x) : no non-missing arguments to min; returning Inf
2: In max(x) : no non-missing arguments to max; returning -Inf
3: In min(x) : no non-missing arguments to min; returning Inf
4: In max(x) : no non-missing arguments to max; returning -Inf
What is it that I'm doing wrong?!
Many thanks for any advice,
Steve
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_____________________________
Baptiste Auguié
School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK
Phone: +44 1392 264187
http://newton.ex.ac.uk/research/emag
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
