similar to: hash value won''t increment with =+ operator

This may be a bonehead question, but when I have some error in a view I''m testing, the server spits out a generic page: "Application error Change this error message for exceptions thrown outside of an action (like in Dispatcher setups or broken Ruby code) in public/500.html" This is pretty unhelpful when I''m debugging. Is there an error log for Rails overall

I''m using a db to log two types of events, link events and tag events. At first I had two tables, link_events & tag_events, but this seemed not very DRY because the only column that was different between them was link_id and tag_id respectively. So I made these tables: events: id int user_id int objtype_id int (holds ''1'' or ''2'' depending

I''m having trouble with rescue_action_in_public, both in getting it to work right in my rails app, and in writing tests to make sure. What I ultimately want to do is test for what a normal user would see when an error is trapped. I override local_request? like so: application.rb -------------- def rescue_action_in_public(exception) render :text => "oops" end def

Subject says it all: rake doesn''t know about db:fixtures:dump. When I try, I get this: Don''t know how to build task ''db:fixtures:dump'' I thought this was a standard feature that ships with rake- any idea why it''s missing, and how I can reinstall it? Here''s the environment: Ruby version 1.8.4 (powerpc-darwin8.6.0) RubyGems

Hey all, first time poster here. I'm new to R and working on my first real programming and forecasting asignment. I'm using unemployment data from 1948-2012. I successfully completed part a and the linear fit for part b, but i am really struggling fitting a polynomial with a power greater than 2 to my forecast. I'll upload my R code at the bottom. Any help is very much appreciated!

I''m trying to run some specs on my Mac OS/Leopard machine (10.5.5) but rubygems won''t allow it: $ spec spec/models/my_spec.rb Rails requires RubyGems >= 0.9.4 (you have 0.9.3). Please `gem update --system` and try again. ...but I already have the latest & greatest installed: $ gem search --local rubygem *** LOCAL GEMS *** rubygems-update (1.2.0, 0.9.5) Tue Sep 16

In Germany the Unemployment Agency uses a sectioning of the german map that is different from the usual Administrative Boundaries. Some demographic data are available in Administrative Boundaries only, some in Unemployment Boundaries only. I would like to generate estimates in one boundary system of data availabe in the other boundary system, and would appreciate advice concerning the following

Dear all, I'm trying to remove some text after the period (a decimal point) in the data frame 'hi', below. This is one step in formatting a table. So I would like e.g. "2.0" to become "2" and "5.3" to be "5.3", where the variable digordered contains the number of digits after the decimal that I would like to display, in the same order in which

> sessionInfo() R version 2.15.0 (2012-03-30) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8 attached base packages: [1] grid datasets splines utils stats [6] graphics grDevices methods base other attached packages: [1] effects_2.1-0 colorspace_1.1-1 [3] nnet_7.3-1

Dear All, I would like to ask if it is possible to estimate a hazard function using the muhaz command when all the data is right-censored. My data has information of the number of weeks people has been unemployed but all of them are unemployed at the date of the survey, that is, I cannot observed when the individuals leave the unemployment state. I appreciate your help, Best, Monica L.

Dear list members, I am working with a Cox ph model for the duration of unemployment. The event of interest in my analysis is getting employed. I have various background variables explaining this event: age, sex, education etc. I have multiple unemployment spells per person. I use a model with person-specific frailty terms in order to take into account the correlation of spells by the same

I write about R every weekday at the Revolutions blog: http://blog.revolution-computing.com . In case you missed them, here are some articles from last month of particular interest to R users. http://bit.ly/un680 demonstrated reader Paul Bleicher's code for visualizing a time series as a heat-map calendar. http://bit.ly/5fgis0 and http://bit.ly/mepBH showed (with thanks to Drew Conway) how

Dear R List, I have a dataset with the following structure: """personal_id, p_0, p_1, p_2, .... , p_36, p_37 1, NA, 1, 4, .... , 1, NA 2, NA, NA, NA, .... , 4, NA . . . 6020, NA, 3, 3, ...., NA, NA 6021, NA, 2, 2, ...., 4, NA """ I used some made-up data. It is just meant to show the structure of the dataset. The variables of interest are p_0, ... p_37.

I''ve got two tables, bookmarks & tags. Using a has_and_belongs_to_many association, I can do lookups using a join table called bookmarks_tags. Two questions: 1. Can I have a migration for my join tables? Rails seems to "know" about join tables implicitly from the associations, but if I do a rake migrate the join tables won''t be built. I''ve been

Hi, I am working on fitting a proportional hazard model to predict the probability of default for mortgage loans. I have a question regarding survfit function. My historical data set is a pool of loans with monthly observed default status for the next 24 months. The data is left truncated (delayed entry to observation window after the loan is opened) and right censored. I would like to

Hello, I have the following problem. I am running simulations on possible states of a set of agents (1=employed, 0=unemployed). I store these simulated time series in a matrix like the following, where rows indicates time periods, columns the number of agents (4 agents and 8 periods in this case): Atr=[ 1 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 0 1 0 1 0

We would like to load data from Statistics Canada (http://www.statcan.gc.ca/) using R, for example, Employment and unemployment rates. It seems to me that the tables are displayed in HTML. I was wondering if you know how to load these tables. Thanks, -james

Can someone please help with the error message below? thanks! Start: AIC=-Inf value ~ 1 + Core_CPI__ + GDP_change + Unemployment + housing + interest + S_P + d1 + d2 + d3 Error in if (any(ch)) { : missing value where TRUE/FALSE needed In addition: Warning message: attempting model selection on an essentially perfect fit is nonsense

Howdy Folks, I want to use form_for to allow a user to submit a form that contains two instances of the same model. They are entering calendar dates and I want them to be able to submit 2 from the same form. Ok, so, using form_for, what is the best way to do this? form_for seems to be setup to handle a single instance in that it wants a name for the variable, etc... Has someone else done this?

Hi, I want to be able create a pie chart using rails, does anyone know of any plugin''s taht could help me here? Scott -- Posted via http://www.ruby-forum.com/.