"Gabor Grothendieck" <[EMAIL PROTECTED]> wrote:
On 7/7/06, Deepayan Sarkar <[EMAIL PROTECTED]> wrote:
> On 7/7/06, Gabor Grothendieck <[EMAIL PROTECTED]> wrote:
>>> Could you explain what panel.groups= does and what the difference
>>> is between panel.groups= and panel= ? In ?xyplot it just says
justin rapp wrote:
> I have a dataset with a variable that is non-numeric. I was wondering
> if there is an easy way in R to create a bar graph that will tell me
> how many of each level of this non-numeric variable are in the overall
> dataset.
>
> Specifically, if my variable is LETTER, and I h
In the Matrix package v. 0.995-11 I see that the dgTMatrix
Class for compressed, sparse, triplet-form matrices handles
Identically indexed data instances by summing their values,
e.g.,
library(Matrix)
(Mt <- new("dgTMatrix",
i = as.integer(c(0,0,1,1,4)),
j = as.integer(c(0,1,2,2,4)),
x
i played around and i get the hang of save and load. I just
have two final questions :
1) is loading the RandomFields package the only
way to check if a file ( created through the save function )
is out there or not ? Because, I generally won't know if one has
been created yet or not.
2) Suppose,
Here's one long-winded way of going about it, using R's ability to
manipulate functions as first class objects:
> f.string
[1] "x1 + sqrt(3*x2)"
> p.string <- parse(text=f.string)
> f <- function() {}# empty function
> v <- all.vars(p.string) # all the variables in the expression
> a <-
Evening folks:
I did an install.views of finance and econometrics and between the two of
them R reported 'FracSim', 'RDCOMClient', 'snow', 'VGAM', and 'segmented'
as missing dependencies. Now, I've managed to hunt down what appear to be
current zip file copies of all of the packages but 'snow'.
A couple of suggestions:
1. This screams out for do.call. Try jj <- do.call("rbind", t1).
2. Use rowSums() instead of apply(..., 1, sum).
Andy
_
From: [EMAIL PROTECTED] on behalf of Mike Nielsen
Sent: Sat 7/8/2006 7:20 PM
To: r-help@stat.math.ethz.ch
Subject: Re: [R] Combining a list
>From: justin rapp <[EMAIL PROTECTED]>
>Date: Sat Jul 08 14:05:12 CDT 2006
>To: r-help@stat.math.ethz.ch
>Subject: [R] Adding Lines to Plot
i'm not definite on this and even
if it works , it;s not the most
efficient
but
abline(h=10)
abline(h=20)
abline(h=30)
etc
i'd be curious if that works on a
Well, this worked, and rather more quickly than I had expected.
Many thanks to the dogs, who told me the answer in return for walking
them and feeding them!
> jj <- eval(parse(text=paste(sep=" ","rbind(",paste(sep="
> ","t1[[",1:length(t1),"]]",collapse=","),")")))
> str(jj)
`data.frame': 8564
Hello,
I am struggling to understand how denominator degrees of freedom and
subsequent significance testing based upon them works in nlme models.
I have a data set of 736 measurements (weight), taken within 3
different age groups, on 497 individuals who fall into two
morphological catagories (
I would be very grateful to anyone who could point to the error of my
ways in the following.
I have a dataframe called net1, as such:
> str(net1)
`data.frame':114192 obs. of 9 variables:
$ server : Factor w/ 122 levels "AB93-99","AMP93-1",..: 1 1 1
1 1 1 1 1 1 1 ...
$ ts
> fun_String <- "-100*x1 + 0*x2 + 100*x3"
>
> fun <- function(x1, x2, x3){
+ eval(parse(text = fun_String))
+ }
>
> fun(4:0, -2:2, 0:4)
[1] -400 -2000 200 400
Best,
Renaud
2006/7/8, Cleber N.Borges <[EMAIL PROTECTED]>:
>
>
> hello
>
> I make a subroutine that give-me a (mathematical)
>
hello
I make a subroutine that give-me a (mathematical)
function in string format.
I would like transform this string into function ( R
function ).
thanks for any tips.
cleber
#e.g.
fun_String = "-100*x1 + 0*x2 + 100*x3"
fun <- function(x1,x2,x3){
return(
evaluation( fun_String
On 7/8/2006 4:55 PM, justin rapp wrote:
> When I attempt to use the mysummary function, I obtain the following error:
>
> Error in var(x) : missing observations in cov/cor
var() gives that error if it sees NA values. You can get it to remove
them by using
var(x, na.rm = TRUE)
instead of var(x
When I attempt to use the mysummary function, I obtain the following error:
Error in var(x) : missing observations in cov/cor
When I use:
by(data.logistic,data.logistic$Ydrafted,summary)
I receive no errors. I cut and pasted your mysummary function directly
into my r console. Should I have made
On 7/8/2006 3:44 PM, justin rapp wrote:
> I apologize for my constant questions but I am new to R and trying to
> gain an appreciation for its capabilities. The following task is easy
> in Excel and I was hoping somebody could give me a quick explanation
> for how it can be acheived in R so I can
I apologize for my constant questions but I am new to R and trying to
gain an appreciation for its capabilities. The following task is easy
in Excel and I was hoping somebody could give me a quick explanation
for how it can be acheived in R so I can avoid having to switch
between the two applicati
I believe that regression coefficients can change signs in partial
least squares (pls) or in the related structural equation modeling (sem)
for roughly the same reasons they can change sign in ordinary least
squares (ols). Both PLS and SEM essentially assume that the
'independent' va
This seems like a question that I should be able to answer on my own
but after looking at the documentation I cannot seem to find the
correct method.
How do I add lines to a bar plot that extend from the vertical axis?
For example, my vertical axis is numbered in increments of 10 and I
would like
With thanks to Matrix package co-author Martin
Maechler, I'm happy to report satisfactory closure
of two recent threads I initiated about that package:
- Warning while subsetting with Matrix
- R Crash with 'library(Matrix);as(x,"dgCMatrix")
In the first, I reported seeing a warning m
For my previous email on this thread, I couldn't find Jim Lindsey's
home page. I just found it via www.r-project.org -> Search
-> "R Site Search" -> "Jim Lindsey's packages." This led me to
"http://popgen.unimaas.nl/~jlindsey/rcode.html";.
... just in case someone following
Greetings:
I wish to use a tcl/tk widget to ask for user-selected parameter values. My
widget works it asks for and returns to my workspace the stuff I need.
Here is a snippet of my code:
###
OnOK <- function()
{
LOG.X <<- as.logical(as.character(tclvalue(log.X.
Dear friends,
I used R to analyze my data with the models of generalized linear models,
and found three models were relatively good, but i can't decide which is the
best,how should i do ?
*Model1:*
glm(formula = snail ~ grass + gheight + humidity + altitude + soiltem +
airtem + grass:altitude, *
Carlos Ortega wrote:
> Dear List,
>
> I have been unable fo find the package quadplot3d referred in the
> Abstract/Presentation "Four Dimensional Barycentric Plot in 3D" presented in
> the UserR!2006.
>
> Does anyone know if it is available ? And if so, if it is ported to Windows
> ?
I think we
justin rapp wrote:
> I have a dataset with a variable that is non-numeric. I was wondering
> if there is an easy way in R to create a bar graph that will tell me
> how many of each level of this non-numeric variable are in the overall
> dataset.
>
> Specifically, if my variable is LETTER, and I h
I have a dataset with a variable that is non-numeric. I was wondering
if there is an easy way in R to create a bar graph that will tell me
how many of each level of this non-numeric variable are in the overall
dataset.
Specifically, if my variable is LETTER, and I have A, B,C, D, E, F and
I want
Questions about packages should be directed to the package maintainers.
A more concise example of the difficulty, with accessible data would
also be helpful.
url:www.econ.uiuc.edu/~rogerRoger Koenker
email [EMAIL PROTECTED] Department of Economics
vox:
Hi
It seems that survfit() doesn't accept the argumnet 'error' as below
>survfit(fit, error='greenwood')
Error in survfit.coxph(fit, error = "greenwood") :
unused argument(s) (error ...)
Isn't is allowed to do that for a coxph object?
Regards Soren
Windows XP, SP2
R 2.3.0
Dear List,
I have been unable fo find the package quadplot3d referred in the
Abstract/Presentation "Four Dimensional Barycentric Plot in 3D" presented in
the UserR!2006.
Does anyone know if it is available ? And if so, if it is ported to Windows
?
Thanks in anticipation,
Carlos Ortega
[
There is some generalized F code (which would
include many other parameteric survival models as
submodels) at this page. The R package seems
somewhat non-standard in terms of installation
and I have not tried it:
http://www.math.mun.ca/~ypeng/research/
On 7/8/06, Valentin Dimitrov <[EMAIL PROTECT
--- Frank E Harrell Jr <[EMAIL PROTECTED]>
wrote:
> That will be a very strange model that I've never
> seen used before in
> survival analysis. Interpretation of parameters
> other than the hazard
> ratio may be tricky. Why do you need a
> nontraditional model such as this?
>
> Frank
>
>
Open Excel, select the data and press ctrl-C.
In R, type this line at the console to
read the clipboard into a data frame DF (or
see the section on Excel in the R Import/Export
manual for other ways):
DF <- read.delim("clipboard", header = TRUE)
Now you can do this:
DF[rep(1:nrow(DF), each
I am hoping for some advice as to whether the following task can be
performed in R?
I have a spreadsheet with 325 rows x 3 columns. The data was collected from
40 individuals who in most instances generated 8 bi-polar constructs (the
poles are separated by //). The first column is the construc
33 matches
Mail list logo
