Displaying 20 results from an estimated 4000 matches similar to: ""rbinom" not using probability of success right"
2008 Oct 31
4
Help needed with Waterfall plot
Hi friends,
I need suggestions/directions on how to producing a waterfall plot for present extend of change in tumour size for a set of respondents in a study. Example of use of waterfall plot is in the following slides presented at ASCO 2007 by Axel Grothey. Link is
2008 Jun 25
2
R alternative to SAS PROC REPORT
R has wonderful graphics but I am wondering whether there is anything in R to provide customization of tables like PROC Report does in SAS.
A Smile costs Nothing
But Rewards Everything
Happiness is not perfected until it is shared
-Jane Porter
[[alternative HTML version deleted]]
2008 May 19
2
Help on nested FOR loops
I am new to more radical programming in R. I am trying to write a nested 'for' loop to produce output that takes subscripts like:
for i taking values 1,2,3,4,5 and
j taking values 1,2,3
I want to output for a computation using the combination values of i and j a value x like this;
i j x
1 1 x11
1 2 x12
1 3 x13
2 1 x21
2 2 x22
2 3 x23
3 1 x31
3 2 x32
2008 Jun 04
1
"& not meaningful for factors"
I am trying to define groupings from levels of factor variables and this the warning message that R give
"& not meaningful for factors".
The nature of my task is this. I have a variable stage which has the levels (1B, 2A, 2B) - these are the AJCC TNM stages of cancer, and another variable diameter with factor levels ("=< 4", "4 - 6.5, > 6.5; limit values are
2008 Sep 23
4
gsub difficulty
Greetings R-ians:
I know what doesn?t work but I don?t know why, nor how to remedy things.
I have a character string containing "." which I want to replace with " "
gsub(".", " ", file.label) replaces the every character with a blank.
However gsub(".xls", " ", file.label) replaces ".xls" with a blank as
expected.
It appears
2008 Aug 14
5
help with my sloppy syntax
R-ians:
After some effort I coerced my code to do what I want but my syntax is a
kludge. Suggestions on more elegant syntax?
par <- NIM.results$par
do.call("Draw.NIM.POD.curve", list(par[1], par[2], par[3], par[4],
par[5], a.hat.decision, .... et cetera ...
It seems that I should be able to avoid defining the variable "par" and then
specifying each of its elements,
2008 Jan 26
3
Which R version created a package?
Greetings, R-ians:
I would like to know which version or R was used to create a given package.
I think I remember seeing that topic discussed recently but cannot find it
among my notes. Can anyone tell me how to determine which version of R
created a package?
Thanks.
Charles Annis, P.E.
<mailto:Charles.Annis@StatisticalEngineering.com>
Charles.Annis@StatisticalEngineering.com
2006 Sep 29
3
control L to clear the Rgui screen in Windows
Greetings R-ians:
Searching the Searchable Mail Archives I discovered that ctrl L will clear
the Rgui screen, which is what I'd like to do from a print (or some similar)
statement.
Is there a mechanism to use the ctrl L clear-screen sequence in a script, or
print statement?
Thanks for your counsel.
Charles Annis, P.E.
Charles.Annis at StatisticalEngineering.com
phone: 561-352-9699
eFax:?
2006 Jul 09
4
string problems with "\\" (Windows)
Greetings, R-ians:
I'm using R 2.3.1 on WindowsXP.
I need to find the name of a file at the end of a sting that contains the
path + file, with the problematic "\\" as separators.
The string looks something like this:
"C:\\Documents and Settings\\myName\\My Documents\\R
Projects\\Project1\\file.name.csv"
What I want is "file.name.csv"
Currently I use the
2006 Jul 09
4
string problems with "\\" (Windows)
Greetings, R-ians:
I'm using R 2.3.1 on WindowsXP.
I need to find the name of a file at the end of a sting that contains the
path + file, with the problematic "\\" as separators.
The string looks something like this:
"C:\\Documents and Settings\\myName\\My Documents\\R
Projects\\Project1\\file.name.csv"
What I want is "file.name.csv"
Currently I use the
2006 Mar 05
2
plotting partial deriviatives
Dear R Helpers:
I am trying to annotate a plot. The following code snippet works, but it is
kind of a kludge since it adds the partial derivative symbols after creating
the plotmath frac(). Is there a more elegant way to write a partial
derivative?
dev.off()
plot(NA, xlim=c(-3,3), ylim=c(0,1.6), xlab="", ylab="", tck=-0.015)
text(1.6, 1, expression(paste("slope =
2008 Oct 05
2
trouble with character \u00e2
Greetings R-wizards:
For historical reasons I have filenames with the character "?" and have
successfully used "\u00e2" in its place, with the hoped-for result on all my
on-screen plots.
However since R2.7.0 I have trouble with savePlot() when the file name
includes that character as it does in this example:
savePlot(paste("diagnostic ? vs a ", file.label,
2009 Aug 26
1
Scripting - sort of
Dear R-ians:
I'm running R2.9.2 on a 6 year old Windows XP DELL with 2 Gig RAM and a 3MHz
Pentium 4 chip.
I've written a package using the User Menus Under Windows commands
(winMenuAdd, etc). It works very well.
I have 6 test cases and running any one of them requires many selections
form the menus and some keyboard entry, and it takes me hours to exercise
them all to see
2006 Aug 19
4
string-to-number
Greetings, Amigos:
I have been trying without success to convert a character string,
> repeated.measures.columns
[1] "3,6,10"
into c(3,6,10) for subsequent use.
as.numeric(repeated.measures.columns) doesn't work (likely because of the
commas)
[1] NA
Warning message:
NAs introduced by coercion
I've tried many things including
strsplit(repeated.measures.columns, split =
2008 Apr 03
1
help with R semantics
Greetings:
I'm running R2.6.2 on a WinXP DELL box with 2 gig RAM.
I have created a new glm link function to be used with family = binomial.
The function works (although any suggested improvements would be welcome),
logit.FC <- function(POD.floor = 0, POD.ceiling =1)
{ if (POD.floor < 0 | POD.floor > 1) stop ("POD.floor must be between zero
and one.")
if
2009 May 03
2
clear screen?
I?ve been using this routine for several years. I?m sorry, I don?t remember
where I got it. It works as it should, viz. it blanks the R console. But
it requires package rcom and now that requires rscproxy.
cls <-
function ()
{
require(rcom)
wsh <- comCreateObject("Wscript.Shell")
comInvoke(wsh, "SendKeys", "\f")
invisible(wsh)
}
> cls()
2006 Apr 21
4
programming advice?
Dear R-helpers:
I am doing some exploratory programming and am considering a routine that
has several other routines defined within it, so that I can avoid a large
and messy global re-programming to avoid naming conflicts.
My question is this: Because it is interpreted, does R have to re-build
these internal routines every time the new routine is called? I'm not
overly worried right now
2009 May 02
1
compiled help pages
Greetings:
This should be easy but it isn't.
I have a home-brew package that works fine, with compiled html help pages,
all 150 of them. I want to make a similar package but not from scratch
since only a half-dozen routines are changed. So I created a new directory,
copied the old package into it and changed the name to newSTUFF. I changed
the names of all help pages too, as weill
2006 Oct 20
3
R-2.4.0 and MS Vista OS - installing packages
I have installed Microsoft Vista Release Candidate 1, and R-2.4.0, on a 4
year old DELL box with a 2.26 GHz P4 and 1 gig. It was a clean install ? R
is the only non-MS program running.
I cannot install packages from CRAN, nor from local zipped files. (I have
R-2.4.0 installed on a Windows XP machine and have had no problems so the
difficulty seems to be Vista not R, however they aren't
2006 Oct 20
3
R-2.4.0 and MS Vista OS - installing packages
I have installed Microsoft Vista Release Candidate 1, and R-2.4.0, on a 4
year old DELL box with a 2.26 GHz P4 and 1 gig. It was a clean install ? R
is the only non-MS program running.
I cannot install packages from CRAN, nor from local zipped files. (I have
R-2.4.0 installed on a Windows XP machine and have had no problems so the
difficulty seems to be Vista not R, however they aren't