Hi Sibylle,
I was about to send you an email, but I'll modify it thanks to your second!
Is PA what you expect? Does it contain the data you want?
You should provide some sample data.
If the importation worked, try to copy/paste the output of dput(PA),
which we can then copy/paste in our console. That function is great to
share R objects. If your dataset is too big, try dput(head(PA)), which
outputs only the first line of it.
Regarding the selection, I think you're doing it wrong. which() returns
a logical vector, which is probably not what you're looking for.
Maybe:
KANE <- PA[PA$Site=="KA" & PA$part=="NE", ] ## the last comma is
important to select all the columns for the rows you've chosen
Read ?"[" or ?subset to understand more
The barplot() might work better then.
HTH,
Ivan
Le 10/27/2010 15:09, "Sibylle Stöckli" a écrit :
-------- Original-Nachricht --------
Datum: Wed, 27 Oct 2010 15:03:48 +0200
Von: "Sibylle Stöckli"<sibylle.stoec...@gmx.ch>
An: Rhelp<r-help@r-project.org>
Betreff: as.list
Dear R-users
sorry, here Rcode included (attachment has been removed)
I would like to read a txt file as list, to select rows and columns, and to
create barplots.
(1) selection of parameter site and part: ok
(2) read txt file as list: problem with (1) as there are NA's (the lines not
selected)
(3) barplot: 5 different groups of bars (the selected columns H5,H8, S5,S8,
C8). In each group 4 different bars (parameter diversity)
--> error in -0.01*height: non-numeric argument to binary operator
PROBLEM
As (2) gives NULL, I think that there is a mistake in my r-script with the
vector/list function.
Thanks
Sibylle
R-Code
PA<-read.table("Biotree_partitioning.txt", header=TRUE)
KANE<-which((PA$site=="KA")&(PA$part=="NE"))
KANE.LIST<-vector("list", dim(PA[KANE,])[2]-4)
KANE.LIST
barplot(KANE.LIST, col=as.numeric(PA$diveristy))
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--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
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+49(0)40 42838 6231
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**********
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