search for: catgory

Hi, I have performed the cookbook tutorial. Before tailoring the views and controllers, when I put in the model recipe.rb: validates_uniqueness_of :title validates_length_of :title, :within => 1...20 And I tried to introduce some new recipe without the above conditions I got the message: --------------------------------------------------- New recipe 1 error prohibited this category from

Hi, Ive followed the pets/people ajax_scaffold example without any problem. I have a table documents and each document has a category. In the documents table i have a field called category_id. So in the documents grif i want to display the corresponding catgory name and when it comes to adding a new category or editing the have a drop down list to select from. category.rb require ''ajax_scaffold'' class Category < ActiveRecord::Base belongs_to :document @scaffold_columns = [ AjaxScaffold::ScaffoldColumn.new(self, { :name =&gt...

...hich form the category.* Here in pcor.mat function i passed a item-category pair dataset and rets all items and categories as predictors. For Partial pairwise i can understand this function won't work ,because some items which form a particular category ,cannot be partailly correlated to that catgory. but listwise shuld have any problem. ** * *Is it due to LINPACK or LAPACK package.I don't have LAPACK package,which is used in teh solve.default package. * * * * Thanks Moumita* * * * * *

This works : class Recipe < ActiveRecord::Base belongs_to :category end But (when I add validation) this does not work : class Recipe < ActiveRecord::Base belongs_to :category validates_length_of :category, :within => 6..20 validates_uniqueness_of :category, :message => "already exists" end thank you -- View this message in context:

Dear R-colleagues, I am quite a newbie to R fighting my stupidity to solve a probably quite simple problem of generating artificial data with defined features. I am conducting a study of inter-observer-agreement in child-bronchoscopy. One of the most important measures is Kappa according to Fleiss, which is very comfortable available in R through the irr-package. Unfortunately medical doctors