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Dear R-List, to assess the model fit for 2PL-models, I tried to mimic the bootstrap-approach chosen in the GoF.rasch()-function. Not being a statistician, I was wondering whether the following simplification (omit the "chi-squared-expressed model fit-step") would be appropriate: GoF.ltm <- function(object, B = 50, ...){ liFits <- list() for(i in 1:B){ rndDat <-

Hi, I wonder why factor scores produced by factanal are correlated, and I'd appreciate any hints from people that may help me to get a deeper understanding why that's the case. By the way: I'm a psychologist used to SPSS, so that question my sound a little silly to your ears. Here's my minimal example: *********************************************** v1 <-

I use the following code in my view: <%= collection_select(''datedata'', ''date'', @allDate, :id, :date) %> It''s show me the date of all entries in the database (Dropdown menu). Additional, I wrote a helper method "showDate" in the application_helper.rb! How can I use this method in the collection_select for every date entry? thanks

...een on the Internet a looong time, and these old mailman style things aren?t that common these days. I am involved in a lot of community projects though, so I do understand the need for cheap and platform-less. Again, I don't get why you're protesting an established mailing list. To quote Montell Jordan, "This is how we do it!" ;)

Hi, i need to test the equality of proportions in a paired case, like here: after before + - + 10 14 - 5 53 So usually i use the mcnemar.test(stats). Due to mortality, I now got the problem that my sample sizes in both factors are not equal any more -- there are less cases in the "after" condition. I already learned that Ekbohm (1982) and Marascuilo adressed the problem

I have been trying to get one of the calender javascripts to work with the <%= form.text_field. So when the user pick the date it updates the time fields? (like in normal reservation system where you pick up the date and time from the calender and when user pick the selection it updates the field) but I could not get this to work. Does anyone have got something similar to work? or could

Hi, I know there are other threads about this topic, but I''ve checked and none seem to help my problem. I''m trying to get a simple search to work on my Rails app, but I get a "Couldn''t find Recipe without an ID" error when I search. Here''s what I have: list.rhtml <%= start_form_tag :action => ''find_recipes'' %>

Hey guys, What would be the best way to create and write to a file? Thanks. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe

Does anyone know if it''s possible to use Active Record migrations in a non-Rails Ruby application (including ActiveRecord of course). Seems like a great tool for creating/maintaining an application database. I''ve tried but no success so far. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby

> "Web" forums are super old fashion. I mean they even predate IP and E- > Mail... Horses for courses perhaps. But I get way too much email, and personally find book marking a current web conversation much easier. Moreover, I don?t want my email address shared with a massive (presumably) list, so I have to use a ?throw away? address, which is added hassle. Especially when said

Is it possible to use the calculate methods (sum, etc.) on attr_accessor attributes? Ie: Class Item < ActiveRecord::Base attr_accessor :total_cost def total_cost @total_cost = self.cost_unit * self.amount end calling Item.sum(:total_cost) or Item.sum(''total_cost'') both return a unknown column ''total_cost'' mysql error. I thought that active

How do I specify which option should be initially selected when using the collection_select command? I''ve tried: collection_select(:selectionfilter, :producer_id, Producer.find(:all), :id, :name, {:include_blank => true, :selected_value => @initial_selection}) However it doesn''t return the desired results (the option with the value of @initial_selection selected).

Just a tip for those of you using RadRails. If you install the new rubygems 0.9.0, you can type "gem rdoc --all --ri" at the command line. Then, open up RadRails, go to Window->Preferences->Ruby->Ri/rdoc and change your ri path to the path to gemri (which gemri). Finally, open up your RI Eclipse view and voila...indexed, searchable rails api docs at your finger tips! This

I''m attempting to use the example given in the Rails Recipes book chapter 2, to create a select drop-down using the InPlaceEditor function (modified to be InPlaceSelectEditor. The example given works (a country list drop-down), but I''m attempting to use it to display a list of items generated from an object in another table that is linked to the table that I''m editing.

Hi list. I''m using Ubuntu distro. for rails development. Today, to my disappoint, I''ve found that there''re certainly almost no mysql frontend which runs very well. (1) mysql-query-browser: Seems to be very nice. But, it quickly exits when I press ctrl+enter or modify a table structure. Something strange is happening here, but I can not figure out what it is. (2)

Hi, I m very new to Ruby. I bought a book "Ruby on Rails" and I think I understand some concepts. My question is : Is there a way to not use "Cookies" or "Sessions Variables" to keep some information about the user. I ask this question because I would like to prevent some cases where the user browser won''t accept cookies. I m from Asp 3.0, and I

Hi, I have edge frozen on vendor, and getting these errors logged: Expected ../config/../app/controllers/store_controller.rb to define StoreController ../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:177:in `load_missing_constant'' ../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:275:in

Dear R-List, I'm trying to read an UTF-8-encoded text file which works fine under ##################################################################### ### CONFIG 1 > sessionInfo() R version 2.12.1 (2010-12-16) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=German_Germany.1252 LC_CTYPE=German_Germany.1252 [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C