Displaying 20 results from an estimated 1200 matches similar to: "Obtaining summary of frequencies of value occurrences for a variable in a multivariate dataset."
2011 Mar 12
2
Drawing a circle on an existing graph.
I would like to draw a circle on a graph I am plotting in R and use
the current plot's coordinate system.
The most basic functionality I am looking for is the ability to plot a
circle on an already existing graph by simply providing the xy
coordinates for it's centre and the radius.
I am also looking for a way to obtain x,y values of a point (of a
circle) by specifying only the origin x,y
2005 Jul 20
6
GSM gateway hardware
Hi All,
I am looking for a GSM VoIP gateway for use with
Asterisk. I have come across VoiceBlue by 2N but it's
price is beyond my reach. Are there any other
alternatives out there?
I've scanned across the mail achieves for an answer to
this without much success, if the question has already
been answered kindly point me to the resource.
Allan.
2007 Jan 11
2
calls to SPA942 disconnect after 15 seconds (chan_sip.c set_destination: can't find address)
Am having a unique problem, calls received on my SPA942 seem to end after 15 seconds, but calls made from this device do not have this problem.
For this device (when receiving calls) I get periodic "chan_sip.c set_destination: can't find address for host"
I have set the "canreinvite=no" in the sip.conf. Does anyone have a sample entry from sip.conf for the Lynksys SPA 942
2008 Sep 15
2
Drawing curves
Hi,
Am looking for an R package that will provide the drawing of curves and
arcs of arbitrary shapes to use in illustrations. For example bent lines
and arrows.
Allan.
2007 Apr 26
4
select if + other questions
Hi,
i am trying to read a .txt file, do a couple of select if statements on my
data, and then finally use the ?table function to get frequency counts on
the data. Specifically, i am looking at answering the following question:
What is the frequency of Grade 7 students in the province of Alberta who
are smokers?
I am having some problems:
1)i cannot get the column names to show up when print
2011 Apr 09
1
loop and sapply problem, help need
Dear R experts
Sorry for this question
M1 <- 1:10
lcd1 <- c(11, 22, 33, 44, 11, 22, 33, 33, 22, 11)
lcd2 <- c(22, 11, 44, 11, 33, 11, 22, 22, 11, 22)
lcd3 <- c(12, 12, 34, 14, 13, 12, 23, 23, 12, 12)
#generating variables through sampling
pvec <- c("PR1", "PR2", "PR3", "PR4", "PR5", "PR6", "PR7",
2007 Apr 27
5
weight
Hi,
I have the file below called happyguys. It is a subset of data. How do I
apply the weight variable (WTPP) to this file? Can i just multiply each
column (except the first column because it is a record id) by WTPP? If the
answer is yes, how do I multiply one variable name by another?
Thanks,
Nat
PROV REGION GRADE Y_Q10A WTPP
83 48 4 7 2 342233324020
115
2007 Feb 05
16
Problems with HTB. Help!
Hello list.
I''ve configured a very simple script to slow down packets coming from a
particular IP Address. I''ve used IPTABLES to mark traffic coming from this
IP Address, but it does not appear to be working as expected. Let me first
describe my system as maybe what I''m doing is beyond what NETFILTER can do.
I have one machine that runs all my servers as
2005 Jul 25
5
passing formula arguments cv.glm
I am trying to write a wrapper for the last example in help(cv.glm) that
deals with leave-one-out-cross-validation (LOOCV) for a logistic model.
This wrapper will be used as part of a bigger program.
Here is my wrapper funtion :
logistic.LOOCV.err <- function( formu=NULL, data=NULL ){
cost.fn <- function(cl, pred) mean( abs(cl-pred) > 0.5 )
glmfit <- glm(
2004 Sep 06
4
substitution in expression
I have been struggling with this problem for a while and I hope someone
could help me. Or if someone could point me to a section in the manual I
would be grateful.
x <- "my"
plot(1:10, main=expression(paste( x, Delta, "values" )))
Q : How do I get the title to say "my (triangle symbol) values" ?
The following trial-and-error produced mainly errors :
2005 Nov 06
3
How can I assign an argument to transfer whether by ref or by value?
Hello guys,
I am wondering the default way of transferring arguments in R. Is it by
value or by ref in default case, or could that be changed explicitly?
Cheers,
Xiaofan
---
Xiaofan Li
Department of Applied Mathematics and Theoretical Physics
University of Cambridge
2004 Mar 15
2
make check on Solaris 8 fails due to plot
Dear all,
I am having trouble trying to install R-1.8.1 on a Sun Solaris 8
(Generic_108528-23 version) machine. The configuration was successful but
make check fails. I traced the the problem to the plot() function.
> 1 + 1
[1] 2
> capabilities()
jpeg png tcltk X11 GNOME libz http/ftp sockets
TRUE FALSE TRUE TRUE FALSE TRUE TRUE TRUE
2008 Sep 11
9
How to load functions in R
Hello,
I am trying to use self created functions in other scripts than the one
where they are stored.
For the moment I am using the following structure of commands to do
that:
1. Load the text file with the functions in the current script:
x=parse("path")
2. transform the tex in a function: f1=eval(x[1]), f2=eval(x[2]) if more
than one function is stored in the text file
3. use the
2004 Oct 01
3
same test statistic for t-test with and without equal variance assumption
Could some kindly tell me if I am supposed to be getting the same test
statistic value with var.equal=TRUE and var.equal=FALSE in t.test ?
set.seed(1066)
x1 <- rnorm(50)
x2 <- rnorm(50)
t.test(x1, x2, var.equal=FALSE)$statistic # 0.5989774
t.test(x1, x2, var.equal=TRUE)$statistic # 0.5989774 ???
Here are my own calculations that shows that perhaps the result when
var.equal=TRUE is
2008 Jun 04
2
rsync error after server restore
Hi,
We have this backup server running for a long time without problem, it
run the rsync command from cron and connect to many other servers geting
the files from those servers.
One of these servers crashed a week before and we restored it, since
then the rsync that connect to this server is giving the following erro
after it get some files:
rsync error: timeout in data send/receive (code
2005 Mar 02
5
Differences between package and library terminology
Just out of curiosity, what is the difference between the terms for
package and library ? Why are we loading a package with the library()
command ?
If this is a case of RTFM, I would be happy to do so if pointed in the
right direction. I have searched the FAQ and mail archives and only came
up with http://tolstoy.newcastle.edu.au/R/help/05/02/12162.html but this
still does not explain what is
2005 Nov 09
5
How to find statistics like that.
Hi there,
Suppose mu is constant, and error is normally distributed with mean 0 and
fixed variance s. I need to find a statistics that:
Y_i = mu + beta1* I1_i beta2*I2_i + beta3*I1_i*I2_i + +error, where I_i is
1 Y_i is from group A, and 0 if Y_i is from group B.
It is large when beta1=beta2=0
It is small when beta1 and/or beta2 is not equal to 0
How can I find it by R? Thank you very much
2005 Jul 18
5
colnames
Hi,
I have a matrix with column names starting with a character in [0-9]. After some matrix operations (e.g. copy to another matrix), R seems to add a character 'X' in front of the column name. Is this a normal default behaviour of R? Why has it got this behaviour? Can it be changed? What would be the side effect?
Thank you.
Regards,
Gilbert
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2003 Mar 17
4
X11 connection error in web cgi mode only
Dear all,
I am trying to create a web interface using Perl-CGI to call R plots and
to display them.
The following codes works perfectly fine when I copy and paste into the
console directly or if I save it into script.file and then R --no-save <
script.file producing the graphs.
jpeg("graph.jpeg", width=400, height=400)
plot(rnorm(100))
dev.off()
Now, I put the line system("R
2003 Dec 10
3
How to calculate standard error for a vector?
Hi all!
I 'm beginner and i develop a bio-application with VB and i need some
statistic functions!
could i calculate StdError, CoeffOfVariance, SumSquared with R langage? if
yes, what are functions to use?
I need also to use ANOVA and t-test...
Thanks for your help!
Laurent Houdusse
Analyste Programmeur