On Apr 9, 2010, at 6:10 PM, wrote:
> I recently updated R on Linus/SuSE 11.1
> I complained because no on-line help was available from JGR after R update. I
> was told to update JGR as well.
> How can I do that ?
> I installed JGR on SuSE three times in the past with different R
> versions.Eve
On 04/10/2010 01:22 AM, David Nemer wrote:
Hey Everyone,
Im fresh new in R, and Im supposed to write a code to give me a correlation
between two rankings. So I have two ranking lists, which contain file names,
e.g.:
Ranking list 1:
file1.java
file3.java
file2.java
Ranking list 2:
fiile2.java
f
cbarcelo wrote:
Hello,
I am currently working with satellite tracking data for an organism with
irregularly spaced location data in space and time (point data is
occasionally spaced by 1-10 days). I have 4 columns of data, Lat, Long,
Date, Time. I would like to linearly interpolate my data set so
Try this:
> A <- c("file1.java", "file3.java", "file2.java")
> B <- c("file2.java", "file4.java", "file1.java")
> cor(A, B, method = "spearman")
[1] 0.5
On Fri, Apr 9, 2010 at 11:22 AM, David Nemer wrote:
> Hey Everyone,
>
> Im fresh new in R, and Im supposed to write a code to give me a correl
paaventhan jeyaganth wrote:
Dear all,
How can i get brier's score for the bootsrap sample for survival analysis.
this are the code i am using for the validation.
f1 <- cph(Surv(time,dead ) ~ strata(x1)+strata(x2)+strata(x3),
x=TRUE, y=TRUE, surv=TRUE, time.inc=12, data=new)
validate(
Hi all,
I am trying to minimize the quardratic form w'Aw, with certain
constraints.
In particular,
(1) A=(a_{ij}) is n by n matrix and it is symmetric positive definite,
a_{ii}=1 for all i;
and 0=0
Analytically, for n=2, it is easy to come up with a result. For larger n, it
Try this:
cat(gsub(":List of .*", "", capture.output(str(x, no.list = TRUE))), sep = '\n')
On Fri, Apr 9, 2010 at 11:11 PM, Jeff Brown wrote:
>
> Hi,
>
> In the help file for str(), the following line appears: "no.list
> logical;
> if true, no ‘list of ...’ nor the class are printed".
- Original Message -
From: "Covelli Paolo"
To:
Sent: Thursday, April 08, 2010 9:05 AM
Subject: [R] use read.table for a partial reading
Hi everyone,
I've got a matrix data with 20 variables (V1, V2, V3, ...) and 215 rows
(observations). I'm interested to read only the first and se
On Sat, Apr 10, 2010 at 4:58 PM, li li wrote:
> I am trying to minimize the quardratic form w'Aw, with certain
> constraints.
> In particular,
> (1) A=(a_{ij}) is n by n matrix and it is symmetric positive definite,
> a_{ii}=1 for all i;
> and 0 (2) w'1=n;
> (3) w_{i}>=0
Try this also:
your_data <- read.table('your_file.txt', colClasses = c('character',
'character', rep(NULL, 18)))
On Thu, Apr 8, 2010 at 11:05 AM, Covelli Paolo wrote:
> Hi everyone,
>
> I've got a matrix data with 20 variables (V1, V2, V3, ...) and 215 rows
> (observations). I'm interested to re
On Sat, Apr 10, 2010 at 5:13 PM, Paul Smith wrote:
>> I am trying to minimize the quardratic form w'Aw, with certain
>> constraints.
>> In particular,
>> (1) A=(a_{ij}) is n by n matrix and it is symmetric positive definite,
>> a_{ii}=1 for all i;
>> and 0> (2) w'1=n;
>>
On 2010-04-09 10:04, Dieter Menne wrote:
RockO wrote:
I tried to find a solution in the search list, but I cannot find it. I
would like to read a .txt file with, let say, three variables, with two of
which have repeated values in a number a columns.
The variables: Treat, x1, x2.
The values:
Try this. The data portion DF[-1] is transposed forming length 2
columns composed of successive elements of DF rows. This is then
transposed back and the id's added in:
# read in
Lines <- "A 2.5 3.4 2.7 5.6 5.7 5.4 10.1 9.4
B 5.3 5.4 6.5 7.5 1.3 4.5 10.5 4.1"
DF <- read.table(textConnection(Lin
On 09.04.2010 17:43, satu wrote:
Dear Romain, you are right. Apologies, here is the complete result from your
script:
code<- '#include\nSEXP f(){\n return R_NilValue ; }'
writeLines( code, "test.c" )
system( "R CMD SHLIB test.c" )
gcc -I"C:/R/R-210~1.1/include"-O3 -Wall -std=gnu
Hi,
I have written a function,
( or 2 functions)
becasue there are only tiny difference,
One of them has lines
==
#c2 (price.mat) call option price
c2=c(
max(S.mat[1,3]-K,0),
max(S.mat[2,3]-K,0),
max(S.mat[3,3]-K,0)
)
(some lines)
list(
"Stock Value"=round(S.mat,dp),
"C
Dennis:
I had never used the rep() function and that works out great, thank you.
Brad
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Hello,
I am a complete beginner to R. I use a mac and want to import and read a
.csv dataset stored as .csv file.
I understand I eventually enter <- read.csv("size.csv", header=T) , but I
can't get R to find my file, which is called size.csv and located
/Users/davidoconnor/Desktop/Eart-125/si
Hello,
I am a complete beginner to R. I use a mac and want to import and read a
.csv dataset stored as .csv file.
I understand I eventually enter <- read.csv("size.csv", header=T) , but I
can't get R to find my file, which is called size.csv and located
/Users/davidoconnor/Desktop/Eart-125/si
Hi, thanks for the reply.
A will be a given matrix satisfying condition 1. I want to find the
vector w that minimizes the
quadratic form. w satisfies condition 2.
2010/4/10 Paul Smith
> On Sat, Apr 10, 2010 at 5:13 PM, Paul Smith wrote:
> >>I am trying to minimize the quardratic form w'
Check out the quadprog package.
On Sat, Apr 10, 2010 at 5:36 PM, li li wrote:
> Hi, thanks for the reply.
> A will be a given matrix satisfying condition 1. I want to find the
> vector w that minimizes the
> quadratic form. w satisfies condition 2.
>
>
> 2010/4/10 Paul Smith
>
>> On Sat, Apr 1
On 04/09/2010 08:52 AM, Peter Danenberg wrote:
> In principle, I'd like to be able to do something like this:
>
> sge.parLapply(seq(10), function(x) parLapply(seq(x), function(x) x^2))
I'm not sure that's such a good principle! It seems like it would be
hard to think about the tasks that are be
Here are two solutions. Assuming x is a zoo object both return zoo objects:
1. rollapply with na.pad and na.locf:
r <- rollapply(x, 5, mean, by = 5, align = "left", na.pad = TRUE)
na.locf(r)
2. or try this which does not use rollapply at all but assumes x is 1
dimensional:
n <- length(x)
Hello,
I have a C function that I call from R using .Call. I recently discovered a
bug in my code, and I am not sure if it is a problem with what I am doing in C
or if it has something to do with my use of .Call.
I have narrowed my problem down to these two C statements:
int size = 5000;
doubl
Hello,
I'm using http://n4.nabble.com/selecting-certain-columns-or-rows-from-a-csv-tp1835692p1835692.html
Sent from the R help mailing list archive at Nabble.com.
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PLEASE
Perfect, thank you!!
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A related question: how do I make R return only one column or row of the .csv
file. For example, I have about 1000 rows and three columns - can I import
only certain rows or columns, like just column 1?
Thank you!!!
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View this message in context:
http://n4.nabble.com/simple-data-import-of-
For that size file, it is the easiest to read in the entire file and then
index just the portion that you want.
On Sat, Apr 10, 2010 at 5:38 PM, doconnor wrote:
>
> A related question: how do I make R return only one column or row of the
> .csv
> file. For example, I have about 1000 rows and th
?read.csv
colCLasses
nrows
On Sat, Apr 10, 2010 at 6:11 PM, doconnor wrote:
>
> Hello,
>
> I'm using certain
> columns or rows from the file.
>
> Much thanks.
>
>
> --
> View this message in context:
> http://n4.nabble.com/selecting-certain-columns-or-rows-from-a-csv-tp1835692p1835692.html
> S
Hi,
===
x=rnorm(20)
y=rnorm(20)
t=lm(y~x)
plot(t)
===
you will get
"click or hit enter to next page..."
how do I write a function to archieve this ?
say
plot(x,y)
then pause, wait
plot(y,x)
Thanks!
casper
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?devAskNewPage
On Sat, Apr 10, 2010 at 7:49 PM, casperyc wrote:
>
> Hi,
>
> ===
> x=rnorm(20)
> y=rnorm(20)
> t=lm(y~x)
> plot(t)
> ===
>
> you will get
>
> "click or hit enter to next page..."
>
> how do I write a function to archieve this ?
>
> say
>
> p
> -Original Message-
> From: r-help-boun...@r-project.org
> [mailto:r-help-boun...@r-project.org] On Behalf Of Erik Wright
> Sent: Saturday, April 10, 2010 3:23 PM
> To: r help
> Subject: [R] .Call function crashes initializing matrix
>
> Hello,
>
> I have a C function that I call from R
I have created plots of rpart objects with the fancy option for text.rpart
("fancy" creates ellipses and rectangles and labels branches with splitting
criteria). The ellipses and rectangles are supposed to "interrupt" the tree
lines (as seen in Therneau and Atkinson 1997, page 48, Fig. 18,
http://w
Does anyone know how to use BLAT(Blast-Like alignment tool) in R?
Thanks and regards.
--
Fahim
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PLEASE do read the posting gui
Hi all,
I am trying to find the expectation of x^1/2 where x~N(a,b) ( Normal with mean
a and variance b).
Any feedback would be highly appreciated.
Have great day !
Haneef
[[alternative HTML version deleted]]
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Dear Haneef,
Pls see if this suits your requirement.
sim.norm = rnorm(1,mean=a,sd=sqrt(b))
mean.est = mean(sqrt(sim.norm))
Thx
S.
On Sat, Apr 10, 2010 at 9:31 PM, Haneef Anver wrote:
> Hi all,
>
>
> I am trying to find the expectation of x^1/2 where x~N(a,b) ( Normal with
> mean a and vari
dataFile = read.csv("filename.csv",header= TRUE);
#suppose u want col 1, col 9 and col 15
col1 = 1;
col9 = 9;
col15 = 15;
modifiedDataFile1 = dataFile[,c(col1, col9, col15)];
#if u want rows from 1-100 and then 1000-5000
modifiedDataFile2 = dataFile[c(1:100, 1000:5000), ];
#If u want to select
I am trying to use blat in R. I couldn't find any package in CRAN or
bioconductor. I downloaded the windows executable from Jim Kent's (from
ucsc) webpage. I was wondering how to use/call these executables or
functions embedded in these executables.
I am seeking for some direction or some materia
On Sat, 10 Apr 2010, Haneef Anver wrote:
Hi all,
I am trying to find the expectation of x^1/2 where x~N(a,b) ( Normal with mean
a and variance b).
Any feedback would be highly appreciated.
Start by constructing plots of x vs Re(sqrt(x)) and x vs Im(sqrt(x)) for
-1 < x < 1. Do it by hand.
Haneef Anver yahoo.com> writes:
> I am trying to find the expectation of x^1/2 where x~N(a,b)
> ( Normal with mean a and variance b).
> Any feedback would be highly appreciated.
I have no idea at the moment how to start doing
this analytically, but is this at all helpful?
> mean(sqrt(comp
Chuck showed how to do this:
fn <- function(x) sqrt(x) * dnorm(x)
> integrate(fn, 0, Inf)
0.4110895 with absolute error < 4.7e-05
>
So the (almost) exact answer is 0.4110895 + 1i * 0.4110895
Ravi.
Ravi Varadhan, Ph.D.
Assis
And Mathematica says
In[2]:= 1/Sqrt[2 Pi] Integrate[Exp[-x^2/2] Sqrt[x],{x,0,Infinity}]
3
Gamma[-]
4
Out[2]= -
3/4
2Sqrt[Pi]
(I suppose there's probably a change-of-variables trick to do this ...)
in R:
> gamma(3/4)/(
How to find out if EURGBP is stationary?
Post the R codes for the same.
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How to find out if GLD-GDX is cointegrating.
post the R codes.
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