Displaying 20 results from an estimated 141 matches for "iverson".
2010 Nov 08
7
How to rbind list of vectors with unequal vector lengths?
Hi,
How to rbind these vectors from a list?:
> l <- list(a = c(1, 2), b = c(1, 2, 3))
> l
$a
[1] 1 2
$b
[1] 1 2 3
> do.call(rbind, l)
[,1] [,2] [,3]
a 1 2 1
b 1 2 3
Warning message:
In function (..., deparse.level = 1) :
number of columns of result is not a multiple of vector length (arg 1)
>
-J
2008 May 16
2
Integer / floating point question
...nd not computed from an
algorithm) is an integer in the sense of FAQ 7.31.
This seems to be the case on my machine.
> identical(2.0, 2)
[1] TRUE
Apologies that this is such a trivial question, it seems so obvious on
the surface, I just want to be sure I am understanding it correctly.
Erik Iverson
iverson at biostat.wisc.edu
sessionInfo()
R version 2.7.0 (2008-04-22)
i686-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8...
2008 Jul 02
1
Hmisc latex function with longtable option
...e are other misalignments).
To resolve this, I am currently going into the /tmp/Rtmp****/ directory
where the .tex files are created by the dvi.latex function, and
rerunning latex on the appropriate file****.tex file.
Is there any thing I'm missing that would make this easier?
Thanks,
Erik Iverson
iverson at biostat.wisc.edu
2009 Aug 31
4
Offtopic, HT vs. HH in coin flips
...pr("HH", ht))+1 #mean of HH position, 6
FYI, this is not homework, I have not been in school in years. I saw a similar problem posed in a blog post on the Revolutions R blog, and although I believe the answer, I'm having a hard time figuring out why this should be?
Thanks,
Erik Iverson
2007 Nov 08
2
mapply, coxph, and model formula
...erms.default(formula, special, data = data) :
no terms component
It appears from debugging that the formula argument passed into coxph is
simply `~` in this case, with class "name" instead of "formula".
Any ideas on how I can get this to work using this approach?
Best,
Erik Iverson
iverson at biostat.wisc.edu
> sessionInfo()
R version 2.5.1 (2007-06-27)
i686-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASURE...
2009 Jan 01
1
Wireless network connection problem
...ireless network lists
around my laptop ,but , i can't connect to the wireless network even
under the right authority
my centos 5.2 dectected my wirless network card as eth1 , it's really
strange , i think
any help ? thx and wish you a happy new year :)
--
Keep It Simple Stupid
Thomas X. Iverson
2006 Apr 04
1
Indexing a vector by a list of vectors
...result without defining my
own dummy function. Can anyone think of a way? As I said, I already
have a way that works, I'm just curious if there is a more 'elegant'
solution that does not rely on my having to define another function.
Seems like it should be possible.
Thanks, Erik Iverson
2012 Jun 28
2
R help, using R to build choropleth
...on$People
pop2=as.numeric(pop)
popdich = ifelse(pop2 < 100000, "red", "blue")
popnames.lower = tolower(popnames)
cols=popdich[match(mapnames,popnames.lower)]
plot(nz,fill=TRUE,col=cols,proj="GCS_NZGD_2000")
thanks in advance for any assistance
Kind regards
Iverson
--
View this message in context: http://r.789695.n4.nabble.com/R-help-using-R-to-build-choropleth-tp4634686.html
Sent from the R help mailing list archive at Nabble.com.
2009 Jul 16
2
quoting expressions in a list
...I'd really like is to name the components, and get the results of the following line without having to specify the right-hand side individually for each component:
names(list.example) <- c("df.example$a > 7", "df.example$b < 4")
Any ideas?
Best Regards,
Erik Iverson
2010 May 23
4
creating a reverse geometric sequence
Hello,
Can anyone think of a non-iterative way to generate a decreasing geometric
sequence in R?
For example, for a hypothetical function dg, I would like:
> dg(20)
[1] 20 10 5 2 1
where I am using integer division by 2 to get each subsequent value in the
sequence.
There is of course:
dg <- function(x) {
res <- integer()
while(x >= 1) {
res <- c(res, x)
x
2007 Nov 09
2
wrapper for coxph with a subset argument
...}
subwrap3(testdf, sex == 'F') #does not work
# Using a string, this works, however.
subwrap4 <- function(x, sb) {
coxph(Surv(times,event)~trt, data = x, subset = eval(parse(text=sb)))
}
subwrap4(testdf, "sex == 'F'")
### END R SAMPLE CODE
Thanks so much,
Erik Iverson
iverson at biostat.wisc.edu
> sessionInfo()
R version 2.5.1 (2007-06-27)
i686-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASURE...
2009 Apr 24
2
argument 'exclude' in function xtabs
Dear all
I was willing to use argument 'exclude' in function xtabs to remove some
levels of factors (xtabs help page says '"exclude: a vector of values to be
excluded when forming the set of levels of the classifying factors").
I tried:
> mydata <- data.frame(
treatment = c("B", "A", "C", "C", "B",
2008 May 22
2
grid error message when resizing graphics window after tcltk loaded
...C=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
Thanks,
Erik Iverson
2011 Apr 08
7
Where is the tcltk package?
Perhaps I'm being even thicker than usual, but I can't find
the tcltk package on CRAN. There is a tcltk2 package, which says
that it is a collection of supplements to tcltk, but I cannot
see a just-plain tcltk anywhere.
If I try to install tcltk2 (from the Linux command line, or using
install.packages() in R) it complains that it needs tcltk.
If I try to install tcltk using
2008 Feb 26
1
wrapper for save function
...stdf' does not
exist in the global environment, but an object called 'mydata' does. I
understand why, but I'd like 'wrapsave' to save the object passed to it
with the name of the object it was called with, in this case 'testdf'.
Is this possible?
Thank you,
Erik Iverson
2010 Mar 22
1
summary.formula and continuous variables
...e groups".
By my reading, this makes it impossible to summarize a continuous
variable with, for example, its correlation with the response variable.
Is there some sort of functionality I'm missing here, or is this just
not possible with how summary.formula is written now?
Thanks,
Erik Iverson
2006 Mar 31
3
Function dependency function
Hi,
Is there a function taking a function as an argument, which returns all the
functions it calls, and all the the functions those functions call, and so
on? I could use Rprof, but that would involve executing the function,
which may miss some branches of code. I'd really like a function which
looks at the source code to work out all the functions that could possibly
be called. When I
2008 Mar 14
3
test individual values in rows
Hi list.
I have a numerical dataset 22,000 rows deep and 43 columns wide. I would like to remove those rows which contain only values less than 100 (ie if any value in the row is greater than 100 the row stays in the dataset). I am unsure how to test each individual value across the rows and then identify the rows which meet my criteria.
Can anyone help?
Thank you.
Iain
[[alternative HTML
2010 Feb 02
1
R's X11 Device Properties
...etting the geometry in .Xresources, but
it does not seem to be the same "class" as WM_CLASS referenced above.
Unfortunately, this is about as far as my knowledge of X goes, so
hopefully this makes sense. If anyone has any pointers, they would be
welcome. Thank you!
Best Regards,
Erik Iverson
2008 Jan 14
2
Need help with xspline error message in R 2.6.1 on Windows XP
I am attempting to generate a series of plots with cubic B-Splines and
the code I am using is generating the following error message that I
have been unable to resolve.
Error in grid.Call.graphics("L_xspline", x$x, x$y, x$shape, x$open,
x$arrow, : add_point - reached MAXNUMPTS (25200)
This is the code that generates this error.
plot.results <- function(dfn) {
dt <-