Displaying 20 results from an estimated 10000 matches similar to: "More on for() Loop..."
2002 Apr 15
1
Re: Writting R Function
Hi,
I think I found the problem. It lies in my Fortran program. Is there a
way, after a DO loop, to make sure it does NOT return anything?
Cheers,
Kevin
On Mon, 15 Apr 2002, Ko-Kang Kevin Wang wrote:
> Date: Mon, 15 Apr 2002 17:27:20 +1200 (NZST)
> From: Ko-Kang Kevin Wang <kwan022 at stat1.stat.auckland.ac.nz>
> To: R Help <r-help at stat.math.ethz.ch>
> Subject:
2002 May 06
4
Subtitle?
Hi,
Is it possible to add a subtitle that appears directly below the main
title?
I tried the "sub" parameter, but it adds sub-title to the bottom of the
plot.
Cheers,
Kevin
------------------------------------------------------------------------------
Ko-Kang Kevin Wang
Postgraduate PGDipSci Student
Department of Statistics
University of Auckland
New Zealand
Homepage:
2002 May 18
5
Length of a string
Hi,
Suppose I have created something like this in R:
foo <- "myfoo"
and I want to find out the number of character in foo (in other words, R
should return 5 since "myfoo" has 5 charactors.
How can I do it? I tried:
length(foo)
but it returned 1.
Cheers,
Kevin
------------------------------------------------------------------------------
Ko-Kang Kevin Wang
2002 Sep 18
2
More on list to data frame (was: Re: List to Data Frame
Hi,
Now suppose I have just one list called FOO, which has 25 objects, e.g.:
[[1]]
1 2 3 4 5
[[2]]
6 7 8 9 10
.
.
.
And I want to do something like:
FRED <- data.frame(cbind(unlist(FOO[[1]]),
unlist(FOO[[2]]),
# ... for all 25 subsets
))
Is it possible to do this, without doing unlist(FOO[[i]]) 25
2002 Sep 23
4
Overall Title in par(mfrow)
Hi,
Say I did something like:
par(mfrow = c(1, 2))
plot(1:10)
plot(1:10)
and I'd like to have an overall title, i.e. a title that would appear,
centered, on the top of both plots, rather than the top of the last plot.
I tried:
title("FOO", outer = T)
but it doesn't appear right. Half of the FOO is outside the figure region
and can't be seen...
Is there another
2003 May 25
1
Example Data Set(s) for nnet, rpart
Hi,
I'm doing a presentation on Neural Networks and Tree-Based Models in two
weeks, at the moment I'm looking for a data set to use in the
presentation. What I would like to use is a good old data, like the Iris
data, that is already known by every statisticians.
MASS4 uses the cpus data in Chapter 8.10 and the Cushing's syndrome in
Chapter 12.4. These two data sets plus the
2002 May 10
1
barplot()
Hi,
Is it possible to draw barplot with x-axis being shown? I looked up the
help file and I couldn't seem to find it.
For example, I tried to do
x <- 1:9
p <- log10(1 + 1/x)
barplot(p, xlab = "Digit d", ylab = "Probability",
ylim = c(0, 0.35), axes = F,
main = "Benford's Law Probability")
axis(1, 1:9)
axis(2, seq(0, 0.35, by = 0.05),
2002 May 06
3
Using Object's Name in Function
Hi,
Suppose I have a function:
myfunc <- function(x, y) {
...
}
And within the function I want to print out the name of the x, y
vectors. For example, if I do:
> myfunc(foo, goo)
[1] "foo" "goo"
It shall return "foo", "goo" (with or without quotes is fine), where foo
and goo are two vectors with numbers.
I know this sounds strange, but I'd
2002 Sep 27
3
xtable()
Hi,
Does anyone know how to manually configure the number of digits printed
out from xtable()?
For example, I'm exporting a data frame through xtable() into a LaTeX
table, I only have two columns in the data frame so by default I only get
two decimal places. But I'd like at least 5 decimal places.
I had a look at ?xtable() but can't seem to find an example.
Cheers,
Kevin
2002 Sep 24
4
print(), paste()
Hi,
Suppose I have the following lines at the end of a function:
answer <- c(2, 1, 0, 4, 5) # In fact, answer will be generate in my
# function
print(answer) # Print the answer
# Now, find the best fitted n degree polynomial
print(paste("The best fit is with", which.min(answer) - 1,
"-degree polynomial"))
this will return:
2002 Sep 19
2
Rounding
Hi,
Suppose I have:
459
1789
23590
and I'd like to round them to:
400
1700
24000
On the other hand, say if I have:
232
1234
23120
that need to be rounded to:
300
1300
24000
I tried the round(), floor() or ceiling() and can't get what I want. Is
there any tricks I can use to achieve this goal?
Cheers,
Kevin
2003 Aug 15
3
How to reinstall rpart?
After entering ?library(rpart)?, I tried to plot an existing rpart tree, and
got this error message: Error: couldn't find function "plot.rpart".
However, ??plot.rpart? does bring up the help for the function. The same
things occur for text.rpart, although print(my.tree) does work.
So, I tried to re-install rpart using Packages | Install from CRAN, but
then I get this
2002 Apr 09
1
Fortran (77) in R
Hi,
I'm learning Fortran and trying to load a Fortran subroutine into R.
I've done:
R SHLIB Fibonacci.f
and it compiled fine.
Then I went into R and done:
> dyn.load("Fibonacci.so")
> Fib <- function(n) {
+ .Fortran("Fibonacci",
+ as.integer(n))[[1]]
+ }
> Fib(5)
Error in .Fortran("Fibonacci", as.integer(n)) :
2002 Sep 19
2
R 1.6 for windows?
On Thu, 19 Sep 2002 10:43:01 -0400 (EDT), you wrote in message
<200209191443.KAA17404@falmouth.bwh.harvard.edu>:
>Hi Duncan -- I am curious as to whether you are building/distributing
>R 1.6.0 for windows? There's nothing urgent about it, I have one.
>The question is how to identify a distribution URL if one exists.
I will be building and distributing the final release.
2003 Mar 10
1
rpart returning only 1 node
Hi,
This may actually be a theoretical question.
When I tried to do the following:
##########################################################
> colnames(rating.adclms)
[1] "usage" "mileage" "sex" "excess" "ncd"
[6] "primage" "minage" "drivers" "district" "cargroup"
[11]
2002 Feb 04
1
row.names in read.table()
Hi,
I was trying to read in the following data set by using:
gas <- read.table("gas.tab", header = T)
when I got the error message:
Error in "row.names<-.data.frame"(*tmp*, value = row.names) :
duplicate row.names are not allowed
Any help are appreciated.
Thanks,
Ko-Kang Wang
2003 May 17
2
Regression tree
Hi everybody.
I'm a new R user and i've been searching a tool for construction of
regression tree...
I found function "tree()" written by a certain Mr. Ripley, and seems to be
just
what i'm looking for, but when i try to use it in R replies me:"Object not
found".
So I was wandering if I should include one special library or something
like that?
Thanks a lot,
ana
2002 Oct 01
1
Cleveland's Cut-and-Stack Plot
Hi,
Is there a function in R that does Cleveland's Cut-and-Stack plot (Page
190 -- 191, The Elements of Graphing Data, William S. Cleveland)?
Or do I need to do it the hard way, i.e. set par(mfrow = c(m, n)) then do
it one-by-one?
(I have a time series data set that is almost identical to the description
in Cleveland's book, hence I'm interested in trying the Cut-and-Stack
plot)
2003 Jul 17
1
Rpart question - labeling nodes with something not in x$frame
I have a tree created with
tr.hh.logcas <- rpart(log(YCASSX + 1)~AGE+DRUGUSEY+SEX+OBSXNUM +WINDLE,
xval = 10)
I would like to label the nodes with YCASSX rather than log(YCASSX +
1). But the help file for text in library rpart says that you can only
use labels that are part of x$frame, which YCASSX is not.
Is there a way to do what I want?
Thanks in advance
Peter
Peter L. Flom, PhD
2003 Apr 08
2
tree plot
Hello helpers
I have this problem. When I plot a regression tree, some words
are cutted in the figure. There is an attached file tree.ps to
see what I'm saying. In the right figure some labels are
cutted. How can I solve this problem?
--
http://adsl.sapo.pt
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