Displaying 20 results from an estimated 2000 matches similar to: "Time series panel"
2007 Feb 09
2
RE gap statistic in cluster analysis
Has anyone implemented Tibrishani's gap statistic in R or S plus? If so I would greatly appreciate the relevant script file.
Any help will be much appreciated
Kind regards
Dr Graham Leask
Economics and Strategy Group
Aston Business School
Aston University
Aston Triangle
Birmingham
B4 7ET
Tel: Direct line 0121 204 3150
email g.leask@aston.ac.uk
[[alternative HTML version deleted]]
2006 Nov 24
2
Diebold Mariano Test
Dear List
Has anyone used R to distnguish between alternative forecasting models? In particular
is the Diebold Mariano test available for use within R.
Any assistance would be greatly appreciated.
Graham Leask
Lecturer in Strategy
Economics & Strategy Group
Aston University
Aston Triangle
Birmingham
B4 7ET
Tel: 0121 204 3150
E Mail: g.leask at aston.ac.uk
2006 Oct 21
1
Box M test
Dear List
I am looking for a script that will calculate the Box M test to test the homogeneity of the variance/covariance matrix between two matrices.
If anyone could send me the script I would appreciate it.
I am aware of the scepticism about this test, where due to extreme sensitivity a p value of 0.01 is recommended. Despite this however Box's M test is the established
2007 Feb 17
1
help with cluster stopping rules
Is there a function available in R that implements Mojena's Upper Tail Rule or that draws a Mojena plot?
I would also like to find a function that implements Duda and Hart's stopping rule.
Finally with function cophenet how can I achieve a straightforward Cophenet correlation coefficient (i.e. one number for example 0.876) that gives the agreement between the structure of the
2007 Mar 01
0
Reshape data
I have two data frames with a number of common variables that I wish to put into "long format".
The first contains the variables
es(Csales)
[1] "terr" "Dec.02" "Jan.03" "Feb.03" "Mar.03" "Apr.03" "May.03" "Jun.03"
[9] "Jul.03" "Aug.03" "Sep.03" "Oct.03"
2007 Feb 12
0
V fold cross validation
Does any package available in R contain the V-fold cross-validation method for determining the right number of clusters?
Any help greatly appreciated
Kind regards
Dr Graham Leask
Economics and Strategy Group
Aston Business School
Aston University
Aston Triangle
Birmingham
B4 7ET
Tel: Direct line 0121 204 3150
email g.leask@aston.ac.uk
[[alternative HTML version deleted]]
2011 Nov 08
0
[LLVMdev] [cfe-dev] LLVM 3.0rc3 Testing Beginning
Which files are needed to build clang? Is it clang-3.0rc2 and llvm-3.0rc3 or do I need the whole test suite?
John
Dr John P. Fletcher Tel: (44) 121 204 3389 (direct line), FAX: (44) 121 204 3678
Chemical Engineering and Applied Chemistry (CEAC),
Associate Dean - External Relations,
School of Engineering and Applied Science (EAS),
Aston University, Aston Triangle, BIRMINGHAM B4 7ETÂ
2006 Feb 28
1
Wrong id after join!
The Problem
-----------
After using a join in my find the id attributes set in my Entity objects
are wrong! It is setting the Entity id to the value from Postcode id!
The Code
--------
entities = Entity.find(:all,
:conditions => [...omited...],
:joins => "as e inner join postcodes as pc on
substring_index(e.postcode,'' '', 1) =
2009 Jul 10
0
Colour in banner/silhouette plot
Dear List
How do you change the colour settings for the banner/silhouette plot? I am
trying to produce
a black and white plot of publication quality.
Is there a way to set black and white plots as the default for R graphics?
Any help greatly appreciated.
Graham Leask
Economics & Strategy Group
Aston University
[[alternative HTML version deleted]]
2011 Dec 22
0
RHTMLForms / Scrape data from website that needs a parameter in-putted
Hi,
I'm trying to get a list of addresses from
http://tatts.com/racing/outletsearch based on a list of postcodes (zip
codes) and states. For example, I'm looking for State = 'Northern
Territory' and Postcode = '0800'. The list I'm working off is about 500
long so I was hoping to find a way to script this in R.
I regularly us readLines and the XML library to scrape
2004 Oct 03
0
Using a single LDAP server to authenticate multiple Samba3 PDCs
Sorry if this is a FAQ but I have tried searching the web and both
samba3 books but I can't find the answer. I would like to use a single
LDAP server (openldap) to authenticate multiple Samba3 PDCs serving
different domains to authenticate Windows XP clients. Ideally I would
like an XP client to appear in both domains and the user to get
different profiles depending on which domain they
2006 May 18
3
Google Map
Used a great howto @
http://iamrice.org/articles/2005/12/09/using-google-maps-in-the-uk-with-rails
for using google maps on uk sites. Just having one issue I can''t seem
to work out how to draw the postcode from my table I keep getting hit by
method errors.
The controller is
require ''postcode_2_latlong''
postcode = Postcode.new("TN22 2LG")
# I want this to
2016 Apr 29
1
How to access the latitude & longitude for UK post codes in R
Hi All,
I have a data frame with three columns i.e., pc, lat, lon.
The pc column is populated with list of postcodes, and I want to execute R command that can get me the lat and lon for the every item in the pc column and populate the respective lat and lon columns.
Is there any package that could be used?
Any help will be really appreciated.
Many Thanks and
Kind Regards
--
Muhammad
2003 May 23
1
Fw: write.table only writes the first 256 variables/columns
Thanks. I was "believing" an Excel import of the file - as you say, a
re-import
into R still has 333 columns. I shall look elsewhere for the cause of the
mysterious truncation.
Stuart
> ----- Original Message -----
> From: "Thomas Lumley" <tlumley at u.washington.edu>
> To: "Stuart Leask" <stuart.leask at nottingham.ac.uk>
> Cc:
2002 Jan 18
0
RE: z-scores for different factor levels
Brian Ripley pointed out that there is already an R function scale() that
does the work of my standardize().
-Greg
-----Original Message-----
From: Warnes, Gregory R
Sent: Friday, January 18, 2002 9:38 AM
To: 'Stuart Leask'
Cc: 'r-help at stat.math.ethz.ch'
Subject: RE: z-scores for different factor levels
Hi Stuart,
I often use this small function
standardize <-
2012 Jun 22
3
removing NA from a data frame
Removing rows with NAs, using na.omit(), doesn't seem to be working for me.
Dataset:
> str ( ex10s )
'data.frame': 2189576 obs. of 5 variables:
$ LOPNR : int 58 58 58 58 64 64 64 64 64 64 ...
$ DIAGNOS: Factor w/ 173 levels "F20","F200","F2000",..: 128 128 128 128 105 105 105 160 105 105 ...
$ X_DATE : int 20060821 20061207 20080102 20090904
1999 Jun 17
2
WinNT to Unix
I currently have a network of 3 SG Unix boxes to which I want to add an SG
running WinNT, I know that I can serve unix file systems to WinNT. Is it
possible to serve WInNT drives to Unix using Samba ?, If not can you suggest
any possibilities.
Andy White
----------------------------------------------------------------------------
----------
University of Central England
Unit 2 Holt Court,
2008 Sep 22
1
Ccreating methods on the fly / counting distinct field values
Hi,
I''m pretty new to ruby and rails, so apologies if this has been covered
before (I couldn''t find a thread on it).
I want to retrieve a count of records held in the DB for every distinct
value of an attribute.
E.g. given a class Address with a postcode field, I would like to retrieve
an array of ValueCount objects. The ValueCount object would hold the value
retrieved from
2002 Jan 18
1
RE: z-scores for different factor levels
Hi Stuart,
I often use this small function
standardize <- function(x) ( x - mean(x, na.rm=T) ) / sqrt(var(x,
na.rm=T))
to standardize variables.
You should be able to use this to do what you want by splitting the data
frame into sections based on the factor level, using standardize() to create
a new variable in each section, then paste the data frame back together.
Something like:
#
2008 Sep 06
0
Tab control using FXRuby
In the sample program below I have a form of 6 text fields, in a scrolling
window, followed by a row of function buttons.
Problems:
1) For data entry purposes I''d like the function buttons NOT to be entered
by pressing Tab keys, and retain their ''clickability'', but when the user
Tab''s out of the last scrolling field (postcode) to have the form scroll to
the