similar to: Optimize for loop / find last record for each person

Hi Experts, I would like to present time series data in meaningful way in building some graphics. I've tried: (1) plot(ts(mbaye3)) and (2) plot(ts(mbaye3), start=1990) But I always get this error-message: Fehler [error] in plotts(x = x, y = y, plot.type = plot.type, xy.labels = xy.labels, : cannot plot more than 10 series as "multiple" my data: mbaye3

Have the counter function in R ? if we use the software SAS /*** SAS Code **************************/ data tmp(drop= i); retain seed x 0; do i = 1 to 5; call ranuni(seed,x); output; end; run; data new; counter=_n_; ***** this keyword _n_ ****; set tmp; run; /* _n_ (Automatic variables) are created automatically by the DATA step or by DATA step statements. */ /*** Output

Hi: I need help merging rows. I am trying to merge the 'Month' column using \multirow. For example for the column 'Week' I want July to be merged into one row(weeks 27,28,29,30) and so on for the following weeks. Below, I am creating a PDF using Sweave, MikTex,R-2.8.1 and windows XP to show an example. \documentclass[11pt]{article} \usepackage{longtable,verbatim} \title{How to

Hi all, I am new to R-project I have a problem when when ever I am going to append a row in a *.csv file that is in R-project I created one dataframe and I saved it in "res.csv" and again I got some results in dataframe with same column names and i tried to append in a new row of same "res.csv" file but its appending again with columnnaes like first time when i created

When I try to install the ROCR package (which requires gplots) on Ubuntu 9.10 (Xubuntu Karmic Koala) 64-bit on R version 2.9.2 (2009-08-24), it eats up all my RAM (2GB) and swap (4GB) and keeps allocating more memory until Linux's out of memory (OOM) killer kills the perl process. This problem is special to Ubuntu because I can install other packages (such as party) on this Ubuntu system, and

Dear Sirs: I've been working with several variables in a dataframe that serve as part of a calculation that I need to perform in a different way depending on its value. Let me explain: The main dataframe is called llmcc llmcc : 'data.frame': 283 obs. of 11 variables: $ Area : num 308.8 105.6 51.4 51.4 52.9 ... $ mFondo : num 30.1 10 10.2 10.2 40.4 ... $ mFachada :

I discovered an interesting aspect of has_many behavior that I''m struggling to work around. I''m not sure if I''m doing something wrong, or if it''s a legitimate bug, or if it''s an inherent part of Rails that I just have to learn to deal with. It boils down to these two problems: - changes in collection objects (i.e. models that belong_to a container

Imagine I want to track people, and the clubs that they belong to. table people with columns person_id, person_name table clubs with columns club_id, club_name And I have the association table: table clubs_people with columns person_id, club_id Now I know how to do this habtm between the two, in order to associate people with clubs that they belong to. However my application also needs a

I have a bunch of queries to compute some counters, like find_by_sql(<<-SQL SELECT p.*, c.nfavourites FROM people p, ( SELECT fp.person_id, COUNT(fp.user_id) as nfavourites FROM favourite_people fp, users u WHERE fp.user_id = u.id AND u.cluster = ''#{in_cluster_of_user.cluster}'' GROUP BY fp.person_id ) as c WHERE

Hi there, I''m currently building a membership application and I want to be able to select, not just all the memberships, but the most current membership from the database on a per user basis. I have linked the tables as shown:- class Membership < ActiveRecord::Base belongs_to :payment belongs_to :person end class Person < ActiveRecord::Base has_many :memberships

Hi all: Below is s a dump from script/console in development env. Am I not supposed to be able to find the record later and use the state machine functionality, or have I missed something? Thanks Forrest ---------------------------- >> ts2 = TalkSession.create( :person_id => 2, :pattern_id => 2) => #<TalkSession:0x35811f0 @attributes={"pattern_id"=>2,

I am sure some of you can give me an insight into this. This is more towards the database design for the scenario below: Say for example, I have a person table and this person can have different address types. One could be Home and the other could be say Office. Should be model this Table people id fname lname Table addresses id person_id addr1 addr2 .... or Table people id fname lname

Hey All, I''m trying to play along w/the ''complex forms 1'' railscast (http://railscasts.com/episodes/73) and having trouble. The view is projects/new. I''m trying to add some project_people to the form w/code like so: <% form_for(@project) do |f| %> [project stuff here] <% for pp in @project.project_person %> <% fields_for

I''ve been searching the web, wikis, and more, and I haven''t turned up examples of how to have multiple entities in a single-table inheritance related to anything. I have an addresses table, but multiple entities can have Addresses: both Person (which has 2 addresses) and Retailer. I''ve been told that I need to use single-table inheritance, and this was my attempt:

I have a Person model. Person has_many lab_urls. The LabUrl model has a title and a url, which are both required. Now, I want to update a LabUrl object and stick some invalid data in there. And I want the person that has that invalid LabUrl to now be invalid, too. That doesn''t seem like too much to ask for. How can I do that? Right now, this is happening: >> me = Person.find(1)

I''m selecting data into a controller and sorting it. The code (in the controller) looks like this: def index @assignments = [] tasks = Task.find(:all, :conditions => ["person_id = ? and actual_end_date is null", session[:user].id.to_s ]) issues = Issue.find(:all, :conditions => ["person_id = ? and status <>

I''ve been puzzling over how to test that attr_accessible has been set for the correct columns; but the tests I''ve come up with so far seem to fail to fail when I expect. I came across this old message from this list: http://www.mail-archive.com/rspec-users at rubyforge.org/msg01570.html Which seemed like a plausible example, but my attempt (modeled on the example)

Dear R-ers, I was trying to read in a large sas7bdat file (size 148094976 bytes) using 'read.sas7bdat()', but it did not read in the data correctly. E.g., the first 5 rows will come out like this (I'm omitting other columns to keep it readable): PERSON_ID age 1 5.399114e-315 5.329436e-315 2 5.399114e-315 5.328302e-315 3 5.399114e-315 5.332026e-315 4

Hello all. I am trying to create a self-referential has_many :through. I used the following site as a guide http://blog.hasmanythrough.com/articles/2006/04/21/self-referential-through but it still doesn''t appear to be working. I have two models. Person and Relationship. A person has many contacts (Which is another person) through relationships class Person < ActiveRecord::Base

Lots of requests but not many answers on this topic. Here is how you do it: FORM: <table> <% for i in 1..6 %> <tr> <td class=''Label''><label>Title</label></td> <td><input id="<%= "picture_#{i}_title" %>" name="<%= "picture[#{i}][title]" %>" size="30"