similar to: R environment advice?

Can a single random number be generated in R? I have an exercise that wants to simulate coin tosses, and I cannot seem to find a good example of the use of random number generation in R. Any help? Joshua Gramlich Chicago, IL

I think this may be a histogram, but I'm not sure. Can anyone tell me how to replicate this graph in R? http://www.ginworks.com/images/multitot.gif Thanks, Joshua Gramlich

Is there a way to edit user defined functions once they've been created? For instance, I've a simple function that plots a table, but I'd like to go back and add more parameters to the barplot call. Is there a way to change this function without completely starting from scratch? Other than storing the code in a file and re-running it? Joshua Gramlich Piocon Technologies Chicago,

I don't suppose it's possible to create a pie chart in R? I've got 1500 some odd elements in a frame that are valued at either -1, 0 or 1 and I'd like to find a reasonable way to represent the distribution graphically...any ideas? Joshua Gramlich Piocon Technologies Chicago, IL

Hi, could you suggest me how to handle this in a proper way? I have a table which has othertable_id column (relationship is belongs_to) Problem is, that sometimes there is a NULL value and table.othertable.foo returns an error... what should I do about it? change something in model? in view? or just add "unknown" row to othertable and update table.othertable_id with id of this

Hello, I have a situation where the foreign key into a table doesn''t correspond to that table''s primary key: my_table ------------- id (pk) name ... other_table -------------- id (pk) my_table_name (fk references my_table(name)) ... I want to be able to say something like: class OtherTable < ActiveRecord::Base belongs_to :my_table, :foreign_key => { :my_table_name

Hi I thought I would run this past the Rails list before I start doing any work because I don''t want to re-invent any wheels. Basically the situation I''m in is that I work for a company that is currently working on two big non-Rails projects used for financial purposes (one sells vehicles and vehicle finance, the other is an internal broker management system used by

Hi R users I am trying to get cross-tabulation tables using tables. All variables used are binary ones (0 and 1). Each time I constructed cross-tabluation table using a different variable pair (e.g., variable 1 and variable 2, variable 1 and variable 3 etc) In doing so, I ran into some problems i.V2 i.V1 1 0 17 1 33 For variable 2 (i.V2) there was no one belonging to ZERO

Hey I am pretty new to Ruby on Rails and I have no idea how to solve the following: I have a join query on a table like this: def mytags Taggable.joins("JOIN taggables as filter ON taggables.tag_id = filter.tag_id WHERE filter.taggable_type = ''User'' AND filter.taggable_id = 1").all end this works perfectly fine. then I want to join the result on another

One quirk to be watched is the use of connections to the DBMS via the Unix sockets vs ports. The PostgreSQL driver bundled with unixODBC will use Unix sockets to `localhost', but this driver seems unreliable (see the ChangeLog). The current driver will only use a TCP/IP port, and to use that needs postmaster started with the -i flag (which is not the default) and with tcp/ip

Is anyone using R with postgres? I'd like to do so, but cannot seem to find any reasonable explanation of how to do so. Joshua Gramlich Chicago, IL

I am a rails newbie and am trying to build my first app. I have a jobs and categories controller and models respectively. CONTROLLER: def new @job = Job.new @catergory = Catergory.all respond_to do |format| format.html # new.html.erb format.xml { render :xml => @job } end end #THIS IS A group of 10 RADIO_BUTTONS TO SELECT A CATEGORY FROM. BY DEFAULT THE FIRST

Hello ... Does anyone know of a package (or other code) out there which has handled S4 classes in C? I realize that a lot of this stuff is fairly new in R-devel, so my assumption is no - but there seems to be some deviation from the green book that is really throwing me off, and I'm looking for some sort of front-to-back example. Thanks -Jeff

I finally got around to signing up with Iaxtel and Free World Dialup... the price was right, as far as that goes! I've gotten and placed calls via FWD just fine. But I can't seem to get registered, or stay registered, with Iaxtel. My logs show the story; at startup I see: Jan 20 07:14:44 VERBOSE[14121]: -- Registered to '65.39.205.121', who sees us as ... yada yada... As

/usr/local/bin/lpr -P%p -J"$a" -U%m %s;\ /usr/local/bin/lpr -P%p -J"Test by Jim" -U%m %s;\ /usr/local/bin/lpr -P%p -J$a -U%m %s;\ /usr/local/bin/lpr -P%p -J%J -U%m %s;\ /usr/local/bin/lpr -P%p -J"%J" -U%m %s;\ But according to /tmp/junkJ, $a is the windows file name, not the spool file name. So does the control file in the spool directory. If I send a file to

Iam new to ferret Iam trying to do a sample application on ferret this is my code: class SearchController < ApplicationController require ''ferret'' include Ferret index = Index::Index.new(:path => ''/path/to/index'') def list end def index index << {:title => "Programming Ruby", :content => "blah blah blah"}

I get this error message from the following code: require ''rubygems'' require ''ferret'' include Ferret index = Index::Index.new(:path => ''/tmp/index'') index << {:title => "Programming Ruby", :content => "blah blah blah"} index << {:title => "Programming Ruby", :content => "yada yada

I do a: sudo yum update and I get: yada, yada, yada,... ---> Package freenx-server.i386 0:0.7.2-8.el5 set to be updated --> Running transaction check --> Processing Dependency: /usr/lib/nx for package: freenx-server Importing additional filelist information --> Finished Dependency Resolution Error: Missing Dependency: /usr/lib/nx is needed by package freenx-server Not only

yum upgrade -y yada yada yada .... then lots of errors like: /usr/share/gnome/help/gdm/fr/gdm.xml:173: parser error : Entity 'eacute' not defined and so on until Document is not well-formed XML: /usr/share/gnome/help/gdm/it/gdm.xml Updating : amtu ##################### [173/520] Updating : grub ##################### [174/520] ...

I cooked up a little script to show what I mean. This doesn''t look right to me, but maybe I just completely misunderstand QueryParser. Same output on mswin32, unix, ferret 0.9 and 0.10 Cheers, Sam require ''rubygems'' require ''ferret'' p Ferret::VERSION # 0.10.6 index = Ferret::Index::Index.new() index << {:title => "Programming