similar to: One-way change

Dear R wizards---I read Brian Ripley's post from 2004 which said that it was not possible to print to STDERR. Alas, I have more modest needs. I was wondering if it was possible to just send a string to STDERR with cat() while in CMD BATCH mode. Is it not possible to open STDERR in R? (Or does R use STDERR for itself and redirect it into the output stream?) This would be on a standard Unix

Installed Fedora5. Installed Ruby 1.8.4. Installed rubygems. Installed rails. Created test app to verify that ruby and rails were working. When I attempted to install mongrel via: sudo gem install mongrel I get this error: Install required dependency daemons? [Yn] y Install required dependency gem_plugin? [Yn] y Building native extensions. This could take a while... can''t find

Hey all, I''m rather new to Ruby and Rails (and not great with SQL), but I''m developing a ride sharing app and would like to be able to sort on something I don''t have stored. I have users, events, and rides, each of which has a zip code. Events have_many rides, and rides belong_to events. When an event is selected, I''d like to be able to show a list of

I have modified scaffolding code slightly to get three edit actions and three update actions. The requirement: to allow users to edit attributes for the same model from seperate forms instead of one form, while using the given scaffolding code and performing model validations. I am using restful_authentication with the login email password validations defined. class users_controller

I''ve got a user object which has quite a few attributes mapped to the database. As of right now I''ve got some validations in the model like: validates_presence_of :password, :message => "You must specify a valid password." validates_confirmation_of :password, :message => "Password doesn''t match the confirmation." validates_presence_of

Hello, I have a situation where an ''employee'' belongs to a ''department'' and have setup the relationship as follows. class Employee < ActiveRecord::Base belongs_to :department, :foregin_key => "department_id" validates_associated :department_id end class Department < ActiveRecord::Base has_many :employees def validate_on_update

I have a couple forms that I''d like to be able to validate and automatically populate, but it shouldn''t be based on AR. In fact I often have a bunch of small forms that I can''t really justify writing a whole new model class for anyway. I''d like to validate the form input, and then use rails helpers to automatically populate the form if validations fail.

I am pretty new to R. So this may be an easy question for most of you. ? I would like to calculate the squared distances of a large set (let's say 20000) of vectors (let's say dimension of 5) to a fixed vector. ? Say I have a data frame MY_VECTORS with 20000 rows and 5 columns, and one 5x1 vector y. I would like to efficiently calculate the squared distances?between each of the 20000

Hello, I have next code: ;begin ; ModuleID = 'sample.lz' @.str1 = internal constant [20 x i8] c"\22hello, cruel world\22" ; <[20 x i8]*> [#uses=1] @.str4 = internal constant [9 x i8] c"\22hello, \22" ; <[9 x i8]*> [#uses=1] @.str7 = internal constant [7 x i8] c"\22heya!\22" ; <[7 x i8]*> [#uses=1]

Ok, I am sure this is a simplistic problem that I am just missing right now (maybe eyes are crossed??). However, I am trying to do simply math here. I have these variables initialized as follows: @amount_due = @amount_paid = @total_due = 0.0 I get @total_due and it is set to 1739.6 from the database. I then get @amount_paid and it is set to 1739.6 from the database. I then calculate the

What''s the best way to validate_on_destroy. Rails only seems to include validate_on_create and validate_on_update methods. I don''t want to resort to doing: before_destroy do |j| raise "There is an error" if j.etc end Is there a way of finding out what action (create/update/destroy) is being performed if I use the ''validate'' method? -- Posted via

And someone goes and redesigns the look and operation of the Trac. Quite noice, but a couple of comments: * The main toolbar ("Wiki", "Documentation", "Timeline") ends up under the puppet logo on the left hand side, which is a pest. * I can''t click on any link, text box, or button in the main part of the page. All of the navigation links work fine, and I

Hi All, here comes the patch for the second wave of Use class size reduction. I have included all the machinery that is needed, and it is *active*. The User* inside of Use is even sometimes NULL, but the algorithm is able to recover it. If there is a non-null User* present, then I am asserting that it equals the computed value. I did not receive feedback for the algorithmic part yet, so I

Hello again! I have a action that lists users and that allows an admin user to create new users. When the admin user creates a new user an e-mail is sent to the created user telling him to register in the site. I want to validate the user name and password only when the user register and not when the admin user creates it. Can anyone tell me how to do this? Thanks. Best regards, Hugo --

Hi, Correct me if I am wrong but there doesn''t seem to be an easy way to add validation outside the pre-built ones (validates_presence_of, validates_lenght_of, etc.). Ideally there should be something like: Class Person < ActiveRecord::Base validates :my_method, :on => create, :message => ''was not valid'' def my_method(param) false unless

I've got the following situation. I'm running Asterisk 1.4.18 on a firewall/gateway machine, with some SPA-942 (f/w 5.1.15(a)) phones behind it. I'm peering SIP with a Coppercom switch sitting behind an SBC. On outbound calls, I get 2-way voice, no worries. On inbound calls, I get one-way voice (I can hear the caller but they can't hear me). I've looked at tcpdumps of

I have a dell inspiron 8200 laptop running centos 4.1 just fine. I want to connect it to an external 32 inch LCD. This laptop is dual boot windows. I set windows up to 1024x768 and connected the LCD - it worked just fine. LCD max is 1333x768 I then booted Centos 4.1 and set X to be 1024x768 also. rebooted the laptop just ot make sure. I then connected the LCD and it says can't display

On Tue, 30 Jan 2024, Richard O'Keefe writes: > Given > - UTC timestamp > - a location (latitude,longitude,elevation) > I want to know > - the sun angles > - the moon angles > - the phase of the moon. > I looked on CRAN for astronomy, but didn't notice anything that seems > to offer what I want. I could try coding these functions myself, but > "if

See, I have built my own genetic algorithm already and tested it on this problem. I have a solution, but due to the heuristic nature of GA, I cannot guarantee that it is the optimal subset. If I was simply doing this for a company project, you are spot on with the type of algorithm I would use, but I am doing this for a scientific paper. I need to be able to find the optimal subset over my

Im experiencing a problem with a current setup and I've run out of ways to debug it and come to a resolution. I have two E100P's in a machine which is routing traffic over the internet to a machine that has 1 E400P connected to the PSTN. Clients are able to make calls successfully but when the call is connected experience one-way audio. They cannot hear anything said by the person