Displaying 20 results from an estimated 24 matches for "metu".
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2012 May 23
2
Special characters in an R package manual
...quot;, but R says that
this is an unknown macro.
Could anyone direct me how to solve this issue?
Best
Ozgur
-----
************************************
Ozgur ASAR
Research Assistant
Middle East Technical University
Department of Statistics
06531, Ankara Turkey
Ph: 90-312-2105309
http://www.stat.metu.edu.tr/people/assistants/ozgur/
--
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2012 May 31
2
Loop question
Hello,
I have a dataframe (Lx) with 5 Lb, and 5 Lw variables. I want to
create several variables according to the loop presented below (data
attached).
Lx <- read.csv("Lx.csv", header=T, sep=",")
for (i in 1:20) {
Lx$sb1[i] <- Lx$Lb1[i+1]/Lx$Lb1[i]
Lx$sb2[i] <- Lx$Lb2[i+1]/Lx$Lb2[i]
Lx$sb3[i] <- Lx$Lb3[i+1]/Lx$Lb3[i]
Lx$sb4[i] <-
2012 May 31
1
Warning message: numerical expression has 1000 elements: only the first used
...00){
t <- rbinom(1000, 1, 0.5)
v <- replace(t,t==0,-1)
sum.vec<-c(sum.vec,sum(v[1:x]))
}
Best
Ozgur
-----
************************************
Ozgur ASAR
Research Assistant
Middle East Technical University
Department of Statistics
06531, Ankara Turkey
Ph: 90-312-2105309
http://www.stat.metu.edu.tr/people/assistants/ozgur/
--
View this message in context: http://r.789695.n4.nabble.com/Warning-message-numerical-expression-has-1000-elements-only-the-first-used-tp4631813p4631903.html
Sent from the R help mailing list archive at Nabble.com.
2012 May 27
7
Customized R Regression Output?
Hello R-Experts,
I am facing the problem that I have to estimate several parameters for a lot
of different dependent variables.
One single regression looks something like this:
y = beta0 + beta1 * x1 + beta2 * x2 + beta3 * x1 * x2 + beta4 * x4 + beta5 *
lag(x4,-1)
where y is the dependent variable and xi are the independent ones. Important
to me are the different estimates of betai and their
2009 Dec 10
2
plotting with varying dot sizes
Dear all,
I am trying to plot on a spatial map the punctual measurements of the data
located in the file (https://opengeo.metu.edu.tr/test.csv). I'd like to have
the dots in some way proportional to the magnitudes of the measurements.
I have difficulties with the code given below: The dot sizes do not vary not
proportionally when varying the coefficient ("0.725"). It either plots the dots
extremely big or e...
2012 Sep 14
4
concatenating two vectors
Dear all,
I want to concatenate the elements of two vectors such as
a<-c("a1","a2")
b<-c("b1","b2")
and obtain
"a1b1", "a1b2","a2b1","a2b2"
I tried the paste and paste0 functions, but they yielded elementwise
concatenation such as
"a1b1","a2b2"
I am wondering that is there an efficient
2012 Sep 16
4
two questions about character manipulation
Dear all,
I want to manipulate a character string such as
ex<-"cbind(data$response1,data$response2)"
in R in two ways:
1) extracting the "response1" portion of ex
2) replacing "$" with "."
I am wondering that is it possible efficiently doing these in R?
Best
Ozgur
--
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2012 Nov 01
1
DirectShow PushSource with theora encoder and Ogg muxer filters
...fferent approach
to capture and transport screen, but I would like to test and see the
results of capturing the screen as video for now.
[1] if (m_averageTimePerFrame == 0)
{
// Theora is constant framerate, reject a variable framerate connection.
return E_FAIL;
}
[2] https://ceng.metu.edu.tr/~e1244888/video/
2008 Nov 23
4
mbox file too large error with deliver
...is specified, deliver
binary tries to log with "logger" and they go to user ?)
user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy): write() failed with mbox
file /var/mail/dummy: File too large
user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy):
msgid=<4915957C.8090606 at ceng.metu.edu.tr>: save failed to INBOX
user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy): sieve runtime error:
Keep: Generic Error
The /var/mail/dummy file exists and is 1.9GB, so my filesystem certainly
supports files >1G
What may be the problem ?
dovecot -n output follows :
---------------...
2010 Jul 08
1
Custom multi-line header for pair plots
Hi All,
Is there a possible way to customize the header text appearing on the
diagonal of a pair plot? My header is:
Biomass PoB QoB ... etc.
I want to put additional information in the diagonal boxes where header
text appears such as mean, standard deviation of data. If I add these
information to the header row of my data, the font size becomes to small
and R plots the header text in one line
2009 Jul 20
2
mahalanobis distance
http://www.nabble.com/file/p24569511/mahalanobis.txt mahalanobis.txt
http://www.nabble.com/file/p24569511/concentrations.txt concentrations.txt
Dear Forum members,
I have a problem calculating mahalanobis distances. My data file
mahalanobis.txt and categories file concentrations.txt are attached. I do
the following steps:
x <- as.matrix(read.table("mahalanobis.txt", header=TRUE))
2003 Jan 28
1
password syncronization
...= 6
passwd chat debug = true
\|///
\ - - // _\=/_
( @ @ ) (o o)
+--------oOOo-(_)-oOOo-----------------------------oOOo-(_)-oOOo---+
| SERDAR ASLAN |
METU/ANKARA/TURKEY
TEL:0312 4834428 THANK YOU.
| |
| oOOo oOOo |
| ( ) oOOo ( ) oOOo |
+--------\ (----( )----...
2008 Dec 24
0
merry christmas!
...uot;
"GLEDILEG JOL-NOELINIZ KUTLU OLSUM"
"EEN GELUKKIG NIEUWJAAR-SRETAN BOSIC"
"KRIHSTLINDJA GEZUAR-KALA CHRISTOUGENA"
"SELAMAT HARI NATAL - LAHNINGU NAJU METU"
"SARBATORI FERICITE-BUON ANNO"
"ZORIONEKO GABON-HRISTOS SE RODI"
"BOLDOG KARACSONNY-VESELE VIANOCE "
"MERRY CHRISTMAS - - HAPPY NEW YEAR...
2012 May 28
1
simulation of levene's test
hello,
I try to run simulation of levene's test to find the p-value but the error
of replacement has length zero occur, could anyone help me to fix this
problem?
asim <- 1000
pv<-rep(NA,asim)
for(i in 1:asim)
{print(i)
set.seed(i)
g1 <- rnorm(20,0,2)
g2 <- rnorm(20,0,2)
g3 <- rnorm(20,0,2)
x <- c(g1,g2,g3)
group<-as.factor(c(rep(1,20),rep(2,20),rep(3,20)))
library(Rcmdr)
2012 Jun 28
4
remove descriptions from output
Dear R users,
I'd like to remove some descriptions when I use "filter".
> filter(1:10, rep(1, 3))
Time Series:
Start = 1
End = 10
Frequency = 1
[1] NA 6 9 12 15 18 21 24 27 NA
That is, I want only this
[1] NA 6 9 12 15 18 21 24 27 NA
Thank you in advance.
Kathie
--
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2012 Jun 28
3
Error: could not find function
Hi
Do I have to load/download the whole package over and over again everytime
when I use the R-Project?
It often prompt me the error message "could not find function"- but I'm
rather sure I have used the function before so I'm not entirely sure it
couldn't find it again when I shut down the computer or so.
Is it to do with directory or clashing with other software?
Any
2012 May 26
3
How to measure level of similarity of two data frames
Hi group,
I've been thinking of calculating euclidean distance between each column of
a data frames that each consists of standardized numerical columns.
However, I don't know if there's a way of summarizing the overall distance
by some kind of metrics. If anyone know a proper way of doing so and/or a
package I would greatly appreciate your suggestions. Thanks very much!
Kel
--
2012 Mar 03
3
submission of some functions to base package
Dear all,
Actually I could not decide who to contact, then decided to post here. If
not appropriate sorry for that.
I have written some functions in R which might be supposed to available in
the base package but not available. I am wondering that how can I submit
those functions to that package?
Best
Ozgur
-----
************************************
Ozgur ASAR
Research Assistant
Middle East
2012 Apr 14
2
how to divide data by week
Dear list users,
I have a data frame as below specified.
From the 1st of May to the 30th of September of several years (e.g. from 2004 to 2011) I have a frequency of accidents.
I need the mean of accidents divided by weeks (i.e. the mean of accidents from the 1st to the 7th of May of all the years, from the 8th to the 14th of May,
..., from the 29th to the 31st of May, from the 1st to the 7th of
2008 Nov 23
1
dovecot Digest, Vol 67, Issue 60
...nary tries to log with "logger" and they go to user ?)
>
> user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy): write() failed with mbox
> file /var/mail/dummy: File too large
> user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy):
> msgid=<4915957C.8090606 at ceng.metu.edu.tr>: save failed to INBOX
> user.log.3.gz:Nov 8 21:23:01 guvercin deliver(dummy): sieve runtime error:
> Keep: Generic Error
>
> The /var/mail/dummy file exists and is 1.9GB, so my filesystem certainly
> supports files >1G
>
> What may be the problem ?
>
>...