Displaying 11 results from an estimated 11 matches for "telfer".
2009 Jul 30
3
R User Group listings
There are now several R geographic user groups, and a few have mailing
lists on the R mailing list system. Thanks to Martin M, there's also a
pointer to a page I'm maintaining to list/describe the groups. The page
is at
http://macnash.telfer.uottawa.ca/RUG.html
Contact me if you have a listing. I'm prepared to wikify it if there is
sufficient interest.
John Nash
2006 Jan 17
10
Is STI the only way to do inheritance?
I''m currently coding a system which must store multiple contact methods for
a user (phone, email, postal address etc). I''m planning a fairly
straightforward inheritance hierachy for these, where each different method
inherits from something like a ContactMethod class.
The only mention of ActiveRecord support for inheritance I can find in the
Wiki and the Agile Web Dev book is
2010 Feb 17
0
Does the R "statistical language includes, > modules/packages to carry out nonlinear optimization similar to the, > SAS NLIN and NLP procedures?
...ost box constraints. Within that caveat, the codes are working, but
they may not be fully bullet-proof or documented. We plan more material as we can get
round to it.
For discussion, with rather up and down traffic that takes various directions, I also run
a wiki called optimx at http://macnash.telfer.uottawa.ca/optimx/doku.php but only the
first page is publicly visible as we use it to discuss ideas that may be half (or less!)
baked. However, I'm happy to give logins on request to genuine R folk and there have been
some quite useful ideas exchanged. Unfortunately, one of my colleagues...
2011 Nov 18
0
how to define the bound between parameters in nls() (Jinsong Zhao)
...er bound on k1 too. The problem is discussed in the book I published with Mary
Walker-Smith in 1987, but I think our treatment is still only an expedient. Note that the
software was in BASIC, but it still runs (DOSBOX is a friend for Linux users). That book
can be obtained free from http://macnash.telfer.uottawa.ca/nlpe/.
Best, JN
On 11/18/2011 06:00 AM, r-help-request at r-project.org wrote:
> Message: 4
> Date: Thu, 17 Nov 2011 20:42:12 +0800
> From: Jinsong Zhao <jszhao at yeah.net>
> To: "r-help at r-project.org" <r-help at r-project.org>
> Subject: [R]...
2005 Oct 12
2
Help with act_as_nested_set
Hi, I''m trying to get act_as_nested_set working, and I''m puzzled.
I googled the following
http://codefetch.com/cache?url=http://media.pragprog.com/titles/rails/code/r
ails-code.tgz
<http://codefetch.com/cache?url=http://media.pragprog.com/titles/rails/code/
rails-code.tgz&path=rails-code/ar/acts_as_nested_set.rb&lang=ruby&qy=ruby>
2011 Jun 18
2
different results from nls in 2.10.1 and 2.11.1
Hi,
I've noticed I get different results fitting a function to some data on
my laptop to when I do it on my computer at work.
Here's a code snippet of what I do:
##------------------------------------------------------------------
require(circular) ## for Bessel function I.0
## Data:
dd <- c(0.9975948929787, 0.9093316197395, 0.7838819026947,
0.9096108675003, 0.8901804089546,
2006 Sep 29
7
help needed in UNIT Testing
hi guys,
I needed help in Unit test. i just try to save new data intomy test
database.
but save method does not works for me. the result shows here
def test_new_avail
avail = Avail.new(:vendor_id => 1,
:last_mod_by => ''Murali'',
:updated_at => ''2006-08-17 13:14:59)
assert avail.valid?
assert avail.save
end
2013 Feb 19
3
R nls results different from those of Excel ??
Hi all
I have a set of data whose scatter plot shows a very nice power
relationship. My problem is when I fit a Power Trend Line in an Excel
spreadsheet, I get the model y= 44.23x^2.06 with an R square value of 0.72.
Now, if I input the same data into R and use
model< -nls(y~ a*x^b , trace=TRUE, data= my_data, start = c(a=40, b=2)) I
get a solution with a = 246.29 and b = 1.51. I have tried
2010 Jun 17
6
R licensing query
I have recently started a new job at an NHS hospital in Scotland. Since
I took up this post 6 months ago I have had an ongoing dispute with the
IT secutiry dept. who refuse to install R on my computer. I previously
worked in another branch of the NHS where R was widely used and yet
there is nothing I can say which will persuade the IT dept here to even
visit the website! With some help from our
2006 Sep 19
18
Open Source UML Tool for Ruby on Rails?
I am new to web development, Ruby on Rails, and UML as well. I was
wondering if there were any free tools available for UML design.
There is a list of free tools on wikipedia under UML tools, but I don''t
understand if I need a tool that supports the ruby language. If anyone
uses a free UML tool for designing Ruby on Rails apps, please let me
know what you use.
2008 Feb 18
0
REST wsdl & Wavemaker
I''m currently investigating creating a Rails application that will offer
a set of services for consumption by Wavemaker (used to be ActiveGrid)
which is a front-end builder.
Wavemaker is supposed to be able to consume SOAP and REST services, but
the service import dialoge insists on a wsdl file in either case. I''ve
just moved to Rails 2.0.2 to learn about REST and I see that