Displaying 20 results from an estimated 20000 matches similar to: "standardize"
2009 Feb 13
4
PCA functions
Hi All, would appreciate an answer on this if you have a moment;
Is there a function (before I try and write it !) that allows the input of a
covariance or correlation matrix to calculate PCA, rather than the actual
data as in princomp()
Regards
Glenn
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2009 Jan 14
6
Removing duplicates from a list
For a list say;
list1<-{1,2,3,4,5,2,1}
How do I remove the duplicates please?
My real list is 20,000 obs long of dates with many duplicates
Regards
Glenn
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2009 Jan 19
3
Month tick marks on a plot()
Hi All,
I have a small dataframe [dates, values) I am plotting with
plot(df,type=²l²)
And the date date covers a year. The graph only have marks at Œ2008¹ and
Œ2009¹.
How do I get the months labeled at the bottom please
Thanks as always
Glenn
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2009 Feb 09
1
sapply
Newbie question sorry (have tried the help pages I promise)
I have a dataframe (date,stockprice) say and looking how I might get the
return of: dataframe (difference in days, change in stock price) using
sapply - I require a very simple function and don't really want to go down
the zoo and quant mod route
Regards
glenn
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2009 Feb 06
2
does R plus 3.3 need vista ?
Hi all - has anyone ot and experienced problems with R+.
Have downloaded the trail and it will not work -does it need vista (like it
says on the box!)
Thanks
glenn
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2009 Jan 18
1
Combinations
Hi All, some help on this would be appreciated;
Understood combinations(7,4) returns all the possible 4 part combinations
out of 7. Is is possible to substitute the ³7² for a list of stuff you would
like to see the mix of; c(³a²,...,²g²) say ?
Thanks
Glenn
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2009 Jan 14
2
List of Lists
Dear All;
Is it possible to create a list of lists (I am sure it is) along these
lines;
I have a dataframe data02 that holds a lot of information, and the first
column is ³date²
I have a list of dates in;
data03<-c(date1,.....,daten)
And would like to create a list;
data04 <- subset(data02, date == data03[1,])
Ie. data04 holds the data from data02 that matches a date in data03
How do
2009 Jan 10
1
<no subject>
Very simple questions if anyone can help:
(1) what is the value in saving workspaces, which is offered at every close?
I thought it might save the set up of the GUI but I cant work out what it
does I run a script that loads the packages I need at the start of every
session.
(2) mathematica has a term (%) that when typed means the last returned
value, so > % + 1 say would return the last
2009 Feb 09
2
subsets problem
Help with this much appreciated
I have a large dataframe that I would like to subset where the constraint
Test1 <- subset(df, date == uniques[[1]]), where uniques is a list of dates
that must be matched to create Test1.
I would like to perform an operation on Test1 that results in a single
column of data. So far so good.
How do loop through all values in the uniques list (say
2008 Dec 16
1
Applying a function to a dataframe
Another Newbie Question sorry:
I am trying to apply a function a dataframe and could use some help:
Assuming, dim(df) = (10,2) say, I would like to apply a function that looks
at each row in turn and returns a list (dim =(10,1)) using the columns as
inputs to the function, but with no INDEX stuff that the by() function
refers to.
For a simple function x+y I know in Mathematica it would be
2007 Jan 09
1
some Maildir files not honoring dovecot-shared
I'm using RC15 on Solaris 9. The wiki indicates that when a dovecot-shared
file exists, "Dovecot uses the same permissions and GID when it creates
index files, dovecot-uidlist file, new mail files, etc." In my case,
Dovecot *is* creating new index files based on dovecot-shared, but
dovecot-uidlist and individual message files don't completely match the
permissions/group
2009 Jan 24
2
Run Script at Start Up
Dear All,
A very quick newbie question sorry.
I am running R on Windows and would like to know if I can store a .R file in
a location that it gets run on start up. Or is there some file I can alter
please?
Regards
Glenn
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2009 Jul 16
4
Ubuntu Jaunty samba 3.3.2 print$ no write rights even though I do; -)
Initially when I posted my access problems to print$ I was using the new registry based smb.conf I had my whole configuration in the registry. Now I move my printers and print$ back to the text based smb.conf and I copied the standard ubuntu debian [printers] and [print$] out of the original ubuntu package smb.conf and the only modification that I made was under the [print$] I change read only to
2004 Sep 10
4
OS X compile errors
On Tuesday, January 7, 2003, at 10:15 PM, Josh Coalson wrote:
> I am going to check in a fix soon that will be in flac-1.0.5-beta2.
> In the meantime you can manually add -Dunix to the two assignments
> of OUR_CFLAGS_TAIL in configure.
I tried that fix, ran `make clean; ./configure --prefix=/opt` then:
[TLB:~/Desktop/flac-1.0.5_beta1/flac-1.0.5_beta1] glenn% make
make all-recursive
2004 Sep 10
2
And Another OS X Install Problem...
/bin/sh ../../mkinstalldirs /sw/lib/xmms/Input
../../libtool-disable-static --mode=install /usr/bin/install -c
libxmms-flac.la /sw/lib/xmms/Input/libxmms-flac.la
libtool-disable-static: install: warning: relinking `libxmms-flac.la'
cd /Users/glenn/Desktop/flac-1.0.5_beta1/src/plugin_xmms; /bin/sh
../../libtool-disable-static --mode=relink gcc -I../.. -I./include
-I../../include -g -O2
2008 May 28
2
inquiry on R News
Dear R News,
I am inquiring whether the articles that are published in the 'R News'
have undergone a peer-review/refereeing process, for the purpose of
reporting the academics publications here at the University of Sydney to
the Australian Government.
Thank you for your assistance.
Regards Glenn
Glenn Howell| Faculty Research Assistant
FACULTY OF ECONOMICS AND BUSINESS
2001 Oct 29
2
Bidirectional printers, LPRng, and Samba...
Does anyone have any hints or suggestions on getting some JetDirect-based
printers set up for bidirectional printing in Samba?
We're using LPRng 3.8.0, ifhp 3.4.7, and samba 2.2.2
From the LPRng standpoint, the printers seem to be set up for
bidirectional communication fine.. but how do we get Samba to allow
bidirectional communication?
Thanks in advance!
Glenn
---
Glenn E. Sieb,
2010 Jan 26
2
large integers in R
Has there been any update on R's handling large integers greater than 10^9 (between 10^9 and 4x10^9) ?
as.integer() in R 2.9.2 lists this as a restriction but doesnt list the actual limit or cause, nor if anyone was looking at fixing it.
Glenn D Blanford, PhD
<mailto:glenn.blanford@us.army.mil>
Scientific Research Corporation
gblanford@scires.com<mailto:gblanford@scires.com>
2008 May 08
1
(no subject)
Hi everyone,
Is there any function to standardize a matrix. For sure it must, but i can't find it. For standardize, i just mean, to make the mean as zero and standard deviation as one.It is also call z-score.
Thanks in advance
_________________________________________________________________
MSN Video.
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2004 Sep 10
6
OS X compile errors
I just tried to compile FLAC 1.0.5 beta1 under Apple's X11 v0.1
(released today) and it didn't work. The error message was:
file_decoder.c: In function `_declspec':
file_decoder.c:477: warning: unused parameter `dllimport'
file_decoder.c:478: warning: unused parameter
`FLAC__file_decoder_process_until_end_of_file'
make[4]: *** [file_decoder.lo] Error 1
make[3]: ***