Displaying 20 results from an estimated 2000 matches similar to: "How to extract the variance componets from lme"
2009 Jul 12
1
Booting problem with memdisk + Thinkpad + USB
Hi,
I encountered a booting problem with memdisk 2.83, USB and IBM Thinkpad
T61, apparently the same issue as described here:
http://syslinux.zytor.com/archives/2008-April/009850.html
The boot process always stops after "Loading boot sector... booting...".
With debug tracers enabled, the last few output lines are:
Loading boot sector... FR<p>Dbooting...
2002 Oct 24
3
model.matrix (via predict) (PR#2206)
Full_Name: Glenn Stone
Version: 1.5.1 and 1.6.0
OS: win2000
Submission from: (NULL) (168.140.227.9)
The following code produces incorrect fitted values in version 1.5.1 and an
error in 1.6.0
Error in "contrasts<-"(*tmp*, value = "contr.treatment") :
contrasts apply only to factors
In addition: Warning message:
variable ihalf is not a factor in:
1997 Apr 08
1
R-alpha: User friendly functions
A loose idea for *post*-0.50 development
I've been giving a some (but not all that many) thoughts to whether
some of the conceptual difficulties facing newcomers could be avoided
by having simplified functions for common operations. We already have
parts of this, e.g. in Kurts ctest routines. Specifically, I was
thinking about data frames: How about
2010 Oct 04
2
i have aproblem --thank you
dear professor:
thank you for your help,witn your help i develop the nomogram successfully.
after that i want to do the internal validation to the model.i ues the bootpred to do it,and then i encounter problem again,just like that.(´íÎóÓÚerror to :complete.cases(x, y, wt) : ²»ÊÇËùÓеIJÎÊý¶¼Ò»Ñù³¤(the length of the augment was different))
i hope you tell me where is the mistake,and maybe i have
2007 May 18
4
Simple programming question
Hi R-users,
I have a simple question for R heavy users. If I have a data frame like this
dfr <- data.frame(id=1:16, categ=rep(LETTERS[1:4], 4),
var3=c(8,7,6,6,5,4,5,4,3,4,3,2,3,2,1,1))
dfr <- dfr[order(dfr$categ),]
and I want to score values or points in variable named "var3" following this
kind of logic:
1. the highest value of var3 within category (variable named
2011 Jun 29
2
Indexing to Insert values from a dataframe into a matrix
Hello,
I think this is a simple problem but I am not coming up with a simple
solution. I think it just an indexing problem.
I can easily replace values in a matrix from a dataframe when the
dataframe has row and column numbers. In the example below I use row
and column names and I can not get it to work
#make a matrix where rows and columns are the lat and long for a
bounding box of Australia
2006 Apr 20
1
Randomly selecting one row for each factor level [Broadca st]
The following should work:
> dfr.samp <- dfr[tapply(1:nrow(dfr), dfr$x, sample, 1),]
> dfr.samp
x y z
10 a 10 J
2 b 2 B
9 c 9 I
Andy
From: Kelly Hildner
>
> I don't use R much, and I have been unable to figure out how
> to get the
> subset of my data frame that I would like.
>
> For example, if this were my data frame:
>
> > dfr <-
2011 Mar 28
2
GSoC 2011 Weighting Schemes
Hi, guys
I am Wenjin from Graduate School of Chinese Academy of Science, pursing a
master degree and my current research interests including using Data mining
and Information retrieve technology to analysis software engineering (SE)
data and support SE.
I have great interested in "Weight Schemes" project. and in the last few
days I have learnt some detail about DFR model family by
2008 Jun 05
2
how to add a method without coding it directly into app?
i''m missing something here.
how would I code this outside the application to be shared with other
Camping apps?
module Blog::Controllers
module AuthenticationHelper
def self.included(base)
class << base
define_method :authenticate do |*a|
a.each do |meth|
if method_defined?(meth.to_s)
2010 Feb 27
1
Newbie help with ANOVA and lm.
Would someone be so kind as to explain in English what the ANOVA code (anova.lm) is doing? I am having a hard time reconciling what the text books have as a brute force regression and the formula algorithm in 'R'. Specifically I see:
p <- object$rank
if (p > 0L) {
p1 <- 1L:p
comp <- object$effects[p1]
asgn <-
2007 May 20
2
Number of NA's in every second column
Hi R-users,
How do I calculate a number of NA's in a row of every second column in my
data frame?
As a starting point:
dfr <- data.frame(sapply(x, function(x) sample(0:x, 6, replace = TRUE)))
dfr[dfr==0] <- NA
So, I would like to count the number of NA in row one, two, three etc. of
columns X1, X3, X5 etc.
Thanks in advance
Lauri
[[alternative HTML version deleted]]
2008 Mar 06
2
How to hold a value(Mean sq) with a string
Hi all:
Can someone advice me on how to hold the residuals
Mean sq value on a string
so it can be used in other calculations.
I was trying something like this:
Msquare<-dfr$Mean sq but fails..Thanks
dfr <- read.table(textConnection("percentQ
Efficiency
1.565 0.0125
1.94 0.0213
0.876 0.003736
1.027 0.006
1.536 0.0148
1.536 0.0162
2.607 0.02
1.456 0.0157
2.16 0.0103
2008 May 30
1
Question about adding text to xYplot(Hmisc)
Hello,
I have been trying to make a graph that have error bars and text at
specific position.
I used the following code from the help file of xYplot(Hmisc) as an
example except I add a myPanel function, which is just supposed to add
letters from the alphabet at the position aligned at y = 3.
It constantly gives me error:
"Error using packet 1 argument "subscripts" is
2009 Nov 17
2
Lattice plot
Hi,
I was trying to get a graph in lattice with the following data frame (7 rows, 5 cols):
chr start1 end1 meth positive
1 1 10 20 1.5 y
2 2 12 18 -0.7 n
3 3 22 34 2.0 y
4 1 35 70 3.0 y
5 1 120 140 -1.3 n
6 1 180 190 0.2 y
7 2 220 300 0.4 y
I wanted the panels to be organized by 'chr' -
2015 Jan 28
2
[Q] Get formal arguments of my implemented S4 method
Interrogating some (of my own) code in another package.
>norm.meth <- getMethod("normalize", "MatrixLike")
>message("str(norm.meth)")
>str(norm.meth)
>message("show(norm.meth at .Data)")
>show(norm.meth at .Data)
Last show() displays this:
function (object, ...)
{
.local <- function (object, method = c("median",
2017 May 31
2
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
OTOH,
> sapply(1:9, function(i){
+ sum(dfr$time <= quantile(dfr$time, 1./3., type = i))
+ })
[1] 8 8 6 6 6 6 8 6 6
Only the default (type = 7) and the first two types give the result lines()
gives now. I think there is plenty of reasons to give why any of the other
6 types might be better suited in Tukey's method.
So to my mind, chaning the definition of line() to give sensible
2005 Apr 06
3
looking for a plot function
Dear useRs,
I have a data frame and I want to plot all rows. Each row is
represented as a line that links the values in each column. The plot
looks like this:
dfr <- data.frame(A=sample(1:50,10),B=sample(1:50,10),
C=sample(1:50,10),D=sample(1:50,10))
xa <- 10*1:4
plot(c(10,40),c(0,50))
for (i in 1:nrow(dfr)) {
lines(xa,dfr[i,],pch=20,type="o")
}
Things get more complicated
2023 Feb 23
1
Compilation Error when DEBUG_approx Toggled on in RISC-V
Hi all,
While compiling R to RISC-V64 architecture and debugging in R's C source
codes, I think I have found a small bug. Can anyone please verify whether
it is a real bug?
The possible bug lies in the file `R-4.2.2/src/library/stats/src/approx.c`
in function `R_approxfun` around line 148:
#ifdef DEBUG_approx
REprintf("R_approxfun(x,y, nxy = %.0f, .., nout = %.0f, method = %d,
2013 Aug 21
1
Bug in dovecot 2.2.5: segfault due to bad alignment
Take a look at the sources, hmac.h declares struct hmac_context:
struct hmac_context {
char ctx[HMAC_MAX_CONTEXT_SIZE];
char ctxo[HMAC_MAX_CONTEXT_SIZE];
const struct hash_method *hash;
};
If compiled for a 32 bit virtual address space, this has an alignment
requirement of 4 due to the hash pointer.
In line 171 of auth-token.c, we have following
2010 Aug 24
1
drop unused levels in lattice dotplot axis?
Hi list, I have a data set - something like this
dfr <- data.frame(A=factor(letters[1:25]),B=runif(25), C=sample(LETTERS[1:4],25,replace=TRUE))
and I want to create a dotplot:
library(lattice)dotplot(A ~ B | C, data=dfr, scales=list(y=list(relation="free")))
but this puts uneven spaces along the y-axis in each panel. drop.unused.levels=TRUE will drop conditioning