similar to: how to generate calculated db fields

Hello, I have a dataset concerning slugs. For each slug, the number of pumps per one time slot was counted. The number of pumps follows Bi(30, p) where p is very small, thus could be approximated by Poisson dist. (# of pumps is very often = 0) The slugs were observed during 12 time slots which are correlated in time as AR(1). The time slots are divided into two categories: Resting time

Hi, im a student so still very new to R. Hope someone could help me out here =) They are 3 slug control products, bustaslug, product X and Y. Im ask to explore the data by plot() and tapply(). But when i try to plot or use the tapply command, it tells me that the x and y lengths differ. so im thinking its because the data is unbalanced? Is there a simple command that i could use to fix this?

Hello. I''m creating my own RESTful blog app. I am wondering about creating post slugs. I think Wordpress creates a slug at post creation time and stores the string in the database, then uses that for URLs. I read about the acts_as_sluggable strategy (http:// agilewebdevelopment.com/plugins/acts_as_sluggable) but I don''t like having a number (the ID) in the URL. Any

I am not sure where I should even begin troubleshooting this. I know a little bit about Linux and am comfortable editing files and running commands however definitely not a Linux guru. I have ipkg already installed on the QNAP. I know absolutely nothing about ruby on rails. Thanks for any help. For those that are not familiar with a QNAP, ipkg is the same as apt-get or yum in some Linux

With acts_as_taggable 1.04... 1. how can I get a frequency of tags? i.e. /tags/list I want to list of tags sorted and listed with their frequency tags_controller.rb: def list @tags = Tags.find_by_sql ''select name, count(*) as freq from tags group by name order by freq desc'' End tags/list.rb: <ul> <% @tags.each do |t| %> <li><%= t.freq %>

Hi, I keep getting the following on my slug no matter what version I try (1.2, 1.4, 1.6, 1.6svn): ... make[2]: Leaving directory `/usr/portage/distfiles/svn/trunk/menuselect/mxml' gcc -o menuselect menuselect.o strcompat.o menuselect_stub.o mxml/libmxml.a menuselect.o: file not recognized: File format not recognized collect2: ld returned 1 exit status distcc[19221] ERROR: compile (null) on

Guess I'll ask again . . . [Samba] Winbind and groups Bub Slug bub1slug@hotmail.com Sun Oct 13 02:35:01 2002 Previous message: [Samba] Strictly Private. Next message: [Samba] Winbind and groups Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hi all, I'm trying to get a samba server which is all by itself, No Windows DCs, or even windows shares at all, to play nice

I think your product is awesome, but I am experiencing an unexpected behaviour. $ rsync -avviPH /Users/alan/Desktop/rsync_test\ Folder/ root@slug::Downloads opening tcp connection to slug port 873 sending daemon args: --server -vvlHogDtpre30.16i "--log-format=%i" -- partial . Downloads sending incremental file list .d..t..g... ./ rsync: failed to write xattr user.rsync.%stat for

Hello, As a small excercise in learning rails, I''ve been porting a very simple website from SSI to rails (yep, a bunch of static files that were previously served with a tiny bit of SSI magic are now served by a database-backed rails, it''s total overkill, I know). Part of the reason is that I''m trying to move from apache to lighttpd, and lighttpd''s SSI for

I never want to alter a model(row). When a model has been changed i want a new copy to be created. What is the best way to implement this? I think using callbacks might be the answer. So model.save will create a new row, and leave the old one unchanged. Any ideas? I can easily implement this in the controller but i''d rather it be done transparently. Also errors should be passed back

Hi, Locally my application is 7MB without tests and logs, etc. The .git folder is 29 MB. I also have no gems / plugins in vendor folder. 95% of images sit on S3. However on committing to Heroku it shows -----> Compiled slug size is 62.7MB What is wrong? It happened? To add more context my .gitignore file is .bundle, db/.sqlite3, config/ database.yml, log/.log, tmp/, .idea, .redcar,

Hi folks! I planned to put asterisk-1.4 on my slug (one of these embedded devices). Since i don't want to compile it natively on this slow processor, i need a cross-compile toolchain. I tried out several ways such as manually compiling binutils and gcc, or using scratchbox. All of these with the result that i got binaries for machines except the one i wanted! :( I then have been given a link

Hi, I have some problems with an application where I''m using custom accessors to do currency conversions. In my model, I have a price attribute in the database that stores the value in cents, to avoid future problems with float arithmetic and round. But at the views, I would like to show the price in euros, with decimal for the cents. So I defined a new attribute called price_in_euros,

I have a problem in where i generate m independent draws from a binomial distribution, say draw1 = rbinom( m , size.a, prob.a ) then I need to use each draw to generate a beta distribution. So, like using a beta prior, binomial likelihood, and obtain beta posterior, m many times. I have not found out a way to vectorize draws from a beta distribution, so I have an explicit for loop

One of my models has a column that is updated very frequently from a separate process, so it is important that when a record is saved in rails, this column should be left alone. In the update method of the controller I have: @record = MyModel.find(params[:id]) @record.update_attributes(params[:my_model]) params[:my_model] doesn''t have a reference to the column I''m talking

I am having a real nightmare getting automated login with ssh to work; hoping someone can guide me. I am running Ubuntu 6.10. I have a main machine (called greywolf) which has a partition for my /home on it. I am doing backups to an extrnal usb drive attached to a Linksys NSLU2 (called slug) running UnSlung firmware. All hosts, networking, shares, firewall & such stuff is working fine.

I have searched a lot for a solution, but I could not find it! I am trying to make a rails application after watching Michael Hartl''s tutorial and when i fill data manually and submit it nothing happens and nothing records in the Mailers table and I am facing the following error: Failures: 1) Mailer pages mail us with valid information should send a mail Failure/Error: expect

i have a problem with the datetime format of rails. i am unable to save a dataset to the db. here''s the error message -- the original error message was in german, so i translated it -- i get: DBI::DatabaseError: Execute OLE error code:80040E07 in Microsoft OLE DB Provider for SQL Server Couldn''t convert a char-Datatype to datetime HRESULT error code:0x80020009

Scenario: I''m creating an image file upload service for my web site. As well as saving the actual file I also need to create a database record for the file. I would like to name the file after the record id, but I also need to save some attributes of the image (width/height/mime_type etc) which I can''t discover until after the file is created. The Problem: 1) The id is not

I am sitting with the Agile book on my desk and scratching my head at the discussion on aggregation - perhaps that isn''t what I need. I have a db called clients. fields include - first_name middle_initial last_name I want to combine them all into one name element in a list view. I can add/edit the fields separately but in the list view, I only want the one combo field. Is there a