search for: telfer

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

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

...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...

...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]...

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>

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,

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

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

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

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.

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