[R] Append Columns

2004-09-04 Thread Yao, Minghua
Dear all,
 
Can I use write.table to append columnns?
 
Thanks for any help
 
-MY
 

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[R] Different Index behaviors of Array and Matrix

2004-09-03 Thread Yao, Minghua
Dear all,
 
I found a difference between the indexing of an array and that of a matrix when there 
are NA's in the index array. The screen copy is as follows. 
 
 A - array(NA, dim=6)
 A
[1] NA NA NA NA NA NA
 idx - c(1,NA,NA,4,5,6)
 B - c(10,20,30,40,50,60)
 A[idx] - B
 A
[1] 10 NA NA 40 50 60
 AA - matrix(NA,6,1)
 AA
 [,1]
[1,]   NA
[2,]   NA
[3,]   NA
[4,]   NA
[5,]   NA
[6,]   NA
 AA[idx,1] - B
 AA
 [,1]
[1,]   10
[2,]   NA
[3,]   NA
[4,]   20
[5,]   30
[6,]   40
 
 
In the case of a array, we miss the elements (20 and 30) in B corresponding to the 
NA's in the index array. In the case of a matrix, 20 and 30 are assigned to the 
elements indexed by the indexes following the NA's. Is this a reasonable behavior. 
Thanks in advance for explanation.
 
-MY

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[R] How to Arrange character vector in alphabetic order

2004-08-25 Thread Yao, Minghua
Hi,
 
Is there any function that can arrange a character in alphabetic order? Thanks for 
answer
 
-MY 

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[R] RE: How to Arrange character vector in alphabetic order

2004-08-25 Thread Yao, Minghua
Sorry for not asking the question clearly. The elements of the character vector may 
consist of numbers not just letter. How to do that. Thanks.
 
-MY



From: Yao, Minghua
Sent: Wed 8/25/2004 2:20 PM
To: R Help
Subject: 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 

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[R] How generate A01, A02, ..., A99?

2004-08-20 Thread Yao, Minghua
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

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[R] Laplacian Distribution

2004-07-06 Thread Yao, Minghua
All,
 
Could anybody please tell me how to generate Laplacian distributed random numbers? 
Thanks.
 
Minghua

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[R] Get Slot from a Class

2004-05-20 Thread Yao, Minghua
Hello, everyone,
 
I don't quite understand the following message:
 
 TTT - t.test(1:10, y=c(7:20))
 class(TTT)
[1] htest
 [EMAIL PROTECTED]
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 htest?

I appreciate the explanations?

-Minghua



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RE: [R] Problems in plot

2004-05-04 Thread Yao, Minghua
It seems to me that the problem happens to the graphic window that is generated 
immediately after the R window is minimized.
 
Minghua 



From: [EMAIL PROTECTED] on behalf of Yao, Minghua
Sent: Fri 4/30/2004 4:12 PM
To: Prof Brian Ripley
Cc: R Help
Subject: RE: [R] Problems in plot



The problem is still there if windows() is used.

Minghua



From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Thu 4/29/2004 9:31 AM
To: Yao, Minghua
Cc: R Help
Subject: Re: [R] Problems in plot



The primary graphics device under Windows is called *windows* not *x11*.

Something in your Windows setup is sometimes failing to choose a
reasonable window size.  I have never seen that, and suspect it is nothing
to do with it, but please use windows() and see if the problem vanishes.

On Thu, 29 Apr 2004, Yao, Minghua wrote:

 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

 This program ran well under R1.6.X under Windows NT.

 It seems to me that it is not a specific x11() that generates that small graphics 
 frame.

 Thank you for you help in advance.

 Minghua





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--
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595




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RE: [R] Problems in plot

2004-05-04 Thread Yao, Minghua
My code is over 700 lines. That is why I didn't send it. I am sorry I did not tell you 
this.
 
See this code,
 
for(i in 1:20){ 
 windows() 
 par(cex = 0.75) 
 plot(1:10) 
} 


if the RGui window is minimized immediately (by clicking the minimize button on the 
upper right corner) after the code is pasted and run.

 for(i in 1:20){ 
+  windows() 
+  par(cex = 0.75) 
+  plot(1:10) 
+ } 
Error in plot.new() : Figure margins too large
 


I am using MDI mode. My operating system is Windows XP.
 
Thanks.
 
Minghua



From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Tue 5/4/2004 10:49 AM
To: Yao, Minghua
Cc: R Help
Subject: RE: [R] Problems in plot



You have been asked for a reproducible set of conditions -- this is the
first time `minimized' has been mentioned.  If you can find a completely
reproducible set of actions please file a bug report (after reading the
FAQ section carefully).

We cannot help you otherwise, and don't want to spend time guessing what
you might have forgotten to tell us.  (I see you have not told us if you
use MDI or SDI mode, for example.)


On Tue, 4 May 2004, Yao, Minghua wrote:

 It seems to me that the problem happens to the graphic window that is
 generated immediately after the R window is minimized.
 
 Minghua

 

 From: [EMAIL PROTECTED] on behalf of Yao, Minghua
 Sent: Fri 4/30/2004 4:12 PM
 To: Prof Brian Ripley
 Cc: R Help
 Subject: RE: [R] Problems in plot



 The problem is still there if windows() is used.

 Minghua

 

 From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
 Sent: Thu 4/29/2004 9:31 AM
 To: Yao, Minghua
 Cc: R Help
 Subject: Re: [R] Problems in plot



 The primary graphics device under Windows is called *windows* not *x11*.

 Something in your Windows setup is sometimes failing to choose a
 reasonable window size.  I have never seen that, and suspect it is nothing
 to do with it, but please use windows() and see if the problem vanishes.

 On Thu, 29 Apr 2004, Yao, Minghua wrote:

  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
 
  This program ran well under R1.6.X under Windows NT.
 
  It seems to me that it is not a specific x11() that generates that small graphics 
  frame.
 
  Thank you for you help in advance.
 
  Minghua


--
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595




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RE: [R] Problems in plot

2004-04-30 Thread Yao, Minghua
The problem is still there if windows() is used.
 
Minghua



From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Thu 4/29/2004 9:31 AM
To: Yao, Minghua
Cc: R Help
Subject: Re: [R] Problems in plot



The primary graphics device under Windows is called *windows* not *x11*.

Something in your Windows setup is sometimes failing to choose a
reasonable window size.  I have never seen that, and suspect it is nothing
to do with it, but please use windows() and see if the problem vanishes.

On Thu, 29 Apr 2004, Yao, Minghua wrote:

 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
 
 This program ran well under R1.6.X under Windows NT.
 
 It seems to me that it is not a specific x11() that generates that small graphics 
 frame.
 
 Thank you for you help in advance.
 
 Minghua

 
 
 

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--
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595




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[R] Problems in plot

2004-04-29 Thread Yao, Minghua
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
 
This program ran well under R1.6.X under Windows NT.
 
It seems to me that it is not a specific x11() that generates that small graphics 
frame.
 
Thank you for you help in advance.
 
Minghua

 
 
 

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[R] Problem in Installing Package from CRAN...

2004-04-28 Thread Yao, Minghua
Hi,
 
I have installed R 1.9.0 under Windows XP. When I used 
 
Packages-Install Package(s) from CRAN... to install the package 'gregmisc', I got 
this message:
 
 local({a - CRAN.packages()
+ install.packages(select.list(a[,1],,TRUE), .libPaths()[1], available=a)})
trying URL `http://cran.r-project.org/bin/windows/contrib/1.9/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 17113 bytes
opened URL
downloaded 16Kb
trying URL `http://cran.r-project.org/bin/windows/contrib/1.9/gregmisc_0.10.2.zip'
Content type `application/zip' length 594089 bytes
opened URL
downloaded 580Kb
Error in unpackPkg(foundpkgs[okp, 2], pkgnames[okp], lib, installWithVers) : 
Unable to create temp directory C:/PROGRA~1/R/rw1090/library\file2869
 
 
Thanks in advance for any help.
 
Minghua

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[R] Question on outer(x, y, FUN,...)

2004-04-22 Thread Yao, Minghua
Dear R gurus,
 
When I used outer(x, y, FUN, ...), I got error message when there was matrix 
multiplications with x or y in FUN. FUN worked fine when x and y were applied to it in 
FUN(x, y, ...). Is this a bug for outer( )?
 
-MY

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RE: [R] Questions about Matrix

2004-02-16 Thread Yao, Minghua
M - matrix(0, t+1, m)
for (i in 1:(t+1))
  for(j in 1:m)
M[i,j] - (i-1-j)^n




From: [EMAIL PROTECTED] on behalf of duoduo chen
Sent: Mon 2/16/2004 2:41 PM
To: [EMAIL PROTECTED]
Subject: [R] Questions about Matrix



How to Generate the Matrix (t+1)*m ?

(0-1)^n   (0-2)^n  (0-m)^n
(1-1)^n   (1-2)^n  (1-m)^n
(2-1)^n   (2-2)^n  (2-m)^n
   ..   ...  ...
(t-1)^n(t-2)^n   (t-m)^n 


Appreciate your kindly help!



-


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[R] Help Needed on plot Function

2004-01-14 Thread Yao, Minghua
Dear all,
 
I want the title of the plot to print some parameters that change. Also, I want some 
spots on the plot to be labeled. Is that possible?
 
Thanks in advance for your help.
 
Minghua

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[R] Excluding from an Array the Elements of Another Array

2003-12-11 Thread Yao, Minghua
Hi,

My question goes like this. I have two arrays A and B. I want to exclude
from A the elements contained in B.
Is there an easy way like A[A != x] to exclude a single one. Thanks for any
help.

Regards,

-MY

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[R] Sorting matrix or data frame

2003-10-07 Thread Yao, Minghua
Dear all,

Could anyone please tell me how to sort a matrix or a data frame against a
column/row/component?
Many thanks.

-MY

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RE: [R] Std. errors of intercept and slope

2003-09-26 Thread Yao, Minghua
Thanks, Ben.

Could you tell me the formula for calculating this sd., given (x_i, y_i)
(i=1,2,...,N)?
We only have one intercept and slope for them.

-Minghua

-Original Message-
From: Ben Bolker [mailto:[EMAIL PROTECTED]
Sent: Friday, September 26, 2003 4:34 PM
To: Yao, Minghua
Cc: R Help (E-mail)
Subject: Re: [R] Std. errors of intercept and slope



  Since the intercept and slope are estimated parameters, they have 
sampling distributions described by their means and standard deviations.  
The s.d. tells you the size of the uncertainty in intercept  in slope.

  This is a pretty basic stats question -- you need to refer to a standard 
textbook or reference material ...

  Ben Bolker

On Fri, 26 Sep 2003, Yao, Minghua wrote:

 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)
 
 Coefficients:
   (Intercept)  blood.glucose  
   1.097810.02196  
 
  summary(lm(short.velocity~blood.glucose))
 
 Call:
 lm(formula = short.velocity ~ blood.glucose)
 
 Residuals:
  Min   1Q   Median   3Q  Max 
 -0.40141 -0.14760 -0.02202  0.03001  0.43490 
 
 Coefficients:
   Estimate Std. Error t value Pr(|t|)
 (Intercept)1.097810.11748   9.345 6.26e-09 ***
 blood.glucose  0.021960.01045   2.101   0.0479 *  
 ---
 Signif. codes:  0 `***' 0.001 `**' 0.01 `*' 0.05 `.' 0.1 ` ' 1 
 
 Residual standard error: 0.2167 on 21 degrees of freedom
 Multiple R-Squared: 0.1737, Adjusted R-squared: 0.1343 
 F-statistic: 4.414 on 1 and 21 DF,  p-value: 0.0479 
 
 
 
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Box 118525   (ph)  352-392-5697
Gainesville, FL 32611-8525   (fax) 352-392-3704

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[R] Question in Using sink function

2003-09-16 Thread Yao, Minghua

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)
  }


  sink()
  close(zz)
..

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RE: [R] Question in Using sink function

2003-09-16 Thread Yao, Minghua

Thanks, Prof. Ripley.

Right. I saw nothing, either, when I tried without for loop.
Does anywhere in the documents mention that Autoprinting does not work
inside a for() {} loop?

Minghua 

-Original Message-
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 16, 2003 11:35 AM
To: Yao, Minghua
Cc: R Help (E-mail)
Subject: Re: [R] Question in Using sink function


Autoprinting does not work inside a for() {} loop, and you did not print 
anything.

Try

for(i in 1:10) {i}

Did you try your problem without sink()?

On Tue, 16 Sep 2003, Yao, Minghua wrote:

 
 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)
   }
 
 
   sink()
   close(zz)
 ..
 
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-- 
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595

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[R] How to Write Message into a File?

2003-09-15 Thread Yao, Minghua

Could any body please tell me how to write the message generated by, say,
t.test() into a file?

Thanks in advance.

Minghua

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[R] Package for Numerical Integral?

2003-08-26 Thread Yao, Minghua

Dear all,

Is there any package for numerically calculating an integral? Thanks in
advance.

-Minghua

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[R] How to copy and paste a R plot onto Word (or Power Point)

2003-08-07 Thread Yao, Minghua

All,

Anybody can tell  how to export a R plot onto Word  (or Power Point)?
Many thanks in advance.

-MY

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[R] NA points in loess function

2003-06-27 Thread Yao, Minghua
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 number, the function worked. What I want to do
is to ignores those NA's. help(loess) doesn't say how to give value to
na.action. It just says the default is to stop. Please help. Thank you in
advance.

-Minghua Yao

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RE: [R] NA points in loess function

2003-06-27 Thread Yao, Minghua
Thank you, Prof. Ripley. By adding na.action=na.exclude to loess function,
the program runs great. 

I did omit some trivial things. But I still think it was NA's that caused
troubles in predict or loess.

Minghua 

-Original Message-
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Friday, June 27, 2003 11:05 AM
To: Yao, Minghua
Cc: R Help (E-mail)
Subject: Re: [R] NA points in loess function


On Fri, 27 Jun 2003, Yao, Minghua wrote:

 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 number, the function worked. What I want to
do
 is to ignores those NA's. help(loess) doesn't say how to give value to
 na.action. It just says the default is to stop. Please help. Thank you in
 advance.

You use na.action=na.exclude (to whatever), that is you give the argument 
a value just like any other argument.

?na.exclude may help you.

However, your error message is not coming from predict or loess but from 
your usage of the result, so you have omitted some of the story (the part 
where you made an error, I think).

-- 
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595

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