Displaying 20 results from an estimated 1100 matches similar to: "Sorting matrix or data frame"
2003 Sep 16
3
Question in Using sink function
Could anyone please explain to me why the following writes nothing into
"all.Rout"
file? If the "for" loop is removed, t.test output can be written into
"all.out".
Thanks in advance.
Minghua Yao
......
zz <- file("all.Rout", open="wt")
sink(zz)
for(i in 1:n)
{
Cy3<-X[,2*i-1];
Cy5<-X[,2*i];
t.test(Cy3, Cy5)
2003 Aug 06
3
How to copy and paste a R plot onto Word (or Power Point)
All,
Anybody can tell how to export a R plot onto Word (or Power Point)?
Many thanks in advance.
-MY
2003 Mar 07
5
Moving average
Hi,
Does anyone know if R has the functionality to calculate a simple moving
average. I cant seem
to find it in the help menu.
thanks,
Wayne
Dr Wayne R. Jones
Statistician / Research Analyst
KSS Group plc
St James''s Buildings
79 Oxford Street
Manchester M1 6SS
Tel: +44(0)161 609 4084
Mob: +44(0)7810 523 713
KSS Ltd
A division of Knowledge Support Systems Group plc
Seventh
2003 Mar 28
4
Testing for randomness
Dear all,
Is there a test in R for the randomness of a sequence of observations (e.g.
to test the random number generator)? Specifically I am looking for autocorrelations
which are not necessarily linear in nature, which the acf function does
not seem to be flexible enough to detect as it tests for linear autocorrelation.
Thanks in advance,
Paul.
2004 Apr 29
5
Problems in plot
Hello,
I have R1.9.0 under Windows XP. My program plots several plots using
x11()
par(cex = 0.75)
......
x11()
par(cex = 0.75)
......
x11()
par(cex = 0.75)
......
x11()
par(cex = 0.75)
......
Sometimes, one of them generates a small frame only with title area "R graphics: Device X (ACTIVE)". The message in the console window is
Error in plot.new() : Figure margins too large
2004 Jul 19
5
converting character strings to eval
Hi there fellow R-users,
I'm stuck on this seemingly trivial problem.
All I want to coerce a character string into a command.
For example:
x<-rnorm(20)
y<-rnorm(20)
str<-"lm(y~x)"
I want to evaluate the "str" command.
I have tried
eval(as.expression(str))
But it doesn't seem to work. I am aware of the call command, but for
reasons I won't go
2003 Apr 10
3
A Question on lowess() function
Hi, all,
I want to use lowess(x, y) where x and y are vectors of length of 4000+. In
fact, x and y are log of some vectors. So, some of the elements are NaN.
lowess() can not take away those elements then do the fitting. It will give
the error message and do nothing.
1. Can anybody tell me how to get rid of those NaN's and use lowess()?
2. How to get the LOWESS fitting values for any
2003 Sep 26
3
Std. errors of intercept and slope
Dear all,
I have the following output generated by linear regression. Since there is
only one regression intercept and one slope for one set of data, what is the
meaning of std. error for intercept and that of slope? Thanks in advance.
Sincerely,
Minghua
> data(thuesen)
> attach(thuesen)
> lm(short.velocity~blood.glucose)
Call:
lm(formula = short.velocity ~ blood.glucose)
2004 Aug 25
5
How to Arrange character vector in alphabetic order
Hi,
Is there any function that can arrange a character in alphabetic order? Thanks for answer
-MY
[[alternative HTML version deleted]]
2020 Feb 27
2
Can't use "samba-tool gpo backup" command
Hi,
I would like to dump my GPO policies with the following command
"samba-tool gpo backup {LONG-ID-NUMBER}" but it didn't work.
System details:
- Tranquil IT's repo.
- Samba version 4.10.12
- CentOS Linux release 7.7.1908 (Core) with kernel
3.10.0-1062.12.1.el7.x86_64
Command result:
ERROR(<class 'UnicodeDecodeError'>): Error copying GPO from DC -
2003 Apr 17
2
Testing for Stationarity of time series
Hi there,
Does anyone know if R has a function for testing whether a time series is
stationary??
Thanks in advance,
Wayne
Dr Wayne R. Jones
Statistician / Research Analyst
KSS Group plc
St James's Buildings
79 Oxford Street
Manchester M1 6SS
Tel: +44(0)161 609 4084
Mob: +44(0)7810 523 713
KSS Ltd
A division of Knowledge Support Systems Group plc
Seventh Floor St James's
2003 Nov 19
2
Correction for first order autocorrelation in OLS residuals
Hi there fellow R-users,
Can anyone tell me if there exits an R package that deals with serial
correlation in the residuals of an lm model.
Perhaps, using the Cochrane Orcutt or Praise Wilson methods?
Thanks,
Wayne
Dr Wayne R. Jones
Senior Statistician / Research Analyst
KSS Limited
St James's Buildings
79 Oxford Street
Manchester M1 6SS
Tel: +44(0)161 609 4084
Mob: +44(0)7810 523 713
2010 Jul 29
3
Fwd: duplicates
-- Eredeti üzenet --
Feladó: Dévaványai Agamemnón <devavanyai@citromail.hu>Címzett: r-hel@r-project.org, r-hel@r-project.orgElküldve: 2010. július 29. 16:29Tárgy : duplicates
Sorry!
I try it again
Dear R Users!
I have a dataframe with duplicatecases. Var1 duplicated by var2.
var1 var2 var3 var4 var5
1 4 500 1 2
1 3 200 2 5
1
2003 Sep 04
3
: RODBC column length>255
Hello there fellow R-users,
I am using the RODBC functionality to query a database. I am trying to read
in a columns of strings which have a character field lengths greater than
255.
The data.frame that I recieve back from the RODBC query only contains the
first 255 characters (the rest having been truncated).
Any help on how to solve this problem would be greatly appreciated.
Reagrds
Wayne
2003 Apr 07
3
New window for plot()
Hi,
Can anybody tell me how to open new a new window for plot()? Thanks.
Minghua
2003 Jun 27
2
NA points in loess function
Gurus,
I used
predict(loess(Y~X));
where Y and X are of the same length. But there are same NA's in both Y and
X. Those NA's are in the same locations in Y and X. The following is the
error messageI got:
Error in "[<-"(*tmp*, , i, value = predict(loess(Y~X))) :
number of items to replace is not a multiple of replacement length
If I replaced the NA's with a
2004 Aug 20
3
How generate "A01", "A02", ..., "A99"?
Hi,
Anyone can tell me how to generate "A01", "A02", ..., "A99"?
paste("A", 1:99, sep="") generates "A1", "A2",..., "A99". This is not what I want.
Thanks for the help.
-MY
[[alternative HTML version deleted]]
2003 Apr 21
2
How to assigen column of matrix
Hi,
A simple question.
I want to assign values to columns (or rows) of a matrix.
It seems that
AA[,i]<-A; # A is a vector or array;
doesn't work.
How can I accomplish that?
Thanks alot.
-MY
2004 May 20
2
Get Slot from a Class
Hello, everyone,
I don't quite understand the following message:
> TTT <- t.test(1:10, y=c(7:20))
> class(TTT)
[1] "htest"
> TTT@p.value
Error: Trying to get slot "p.value" from an object whose class ("htest") is not defined
> TTT$p.value
[1] 1.855282e-05
Why the message says the class of TTT is not defined while class(TTT) gets
2003 Jul 16
5
Sorting a data frame
Hi there R-Helpers,
Does anyone know if it is possible to sort a dataframe?
I.e. Sort alphabetically column 1 ( which has some reocurring elements) then
sort alphabetically column2 but keeping the order of column 1 constant;
much the same way that the sort function works in Excel.
Regards,
Wayne
Dr Wayne R. Jones
Statistician / Research Analyst
KSS Group plc
St James's Buildings
79