similar to: mean over previous cells

i know it''s probably really simple, how do i work out someone''s age if i have their d.o.b. stored as a date in my db. cheers -- Posted via http://www.ruby-forum.com/.

when retreiving a date from a DATETIME field in a database, is there a way to set the date to the value of the DB in the view? It seems to always default to the current date... if I have a field called birthdate in the users table and i do @user = User.find(@params[:id]) in my view i have a <%= date_select ''birthdate'',''user'' %> but dont know how to

Hello, all. I've got what is probably a simple question about comparison of models using anova, specifically about the situations in which it's valid. I understand, I think, what's going on when the models are strictly nested (as most are in the demo(lm) examples). My question involves what happens when the models aren't strictly nested. In my particular case, I'm doing

Hi, I have a puzzeling problem. I want to export graphics from R to TeX via postscript(). This works fine for some graphs, but for others, the eps remain empty when viewed with GSView. When such an empty eps is imported to TeX, the figure appears upside down and very small, irrespective of TeX width and height commands. If I transform the eps to pdf, the graphic shows up, but turned aqround 90°.

Hi, I have this rails query: @birthdays = Birthday.find :all, :conditions => ["user_id = ? and birthdate = ''2006-02-01'', @user_id], :limit => @birthday_pages.items_per_page, :offset => @birthday_pages.current.offset You can ignore the user_id, limit and offset part.

Hi When I use the read.table function with header = T, I notice that it gives me the variable names along the top as I expect. But, when I then attempt an analysis, e.g. regression, it doesn't recognize the variable names. Am I missing a step. Thank you David [[alternative HTML version deleted]]

I want my date fields to default to NIL or "", because the presence of a date means something. My problem is that rails is defaulting the fields to today''s date automatically when I create a new record through the scaffold. I tried removing the default ''0000-00-00'' and changing NOT NULL to NULL, but both columns get today''s date as the default

I am using date_select and in some instances it only shows about 10 years worth of choices. Same form on other users shows the whole range. date_select looks like this <%= date_select ''user'',''birthdate'' , :start_year => 1940 %> I would expect to always see 1940-2006 or so , but i dont always do. Is there a way to force the range or explain why i

Hi, I''m creating a date type field to put birthdate, but the years on this field only go to 2003, what should I do?? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To

i use library(ncdf) to read this file as follow library(ncdf) sst.nc = open.ncdf(title) lonall = get.var.ncdf(sst.nc,'lon') latall = get.var.ncdf(sst.nc,'lat') precip = get.var.ncdf(sst.nc,'pre') close(sst.nc) if i use this method my pc freeze and not respond until i restart it is there -- View this message in context:

As an R beginner, I feel brain dead today as I can not find the answer to a relatively simple question. Given a array of string values, for example lets say "mary", "bob", "danny", "sue", and "jane". I am trying to determine how to perform a logical test to determine if a variable is an exact match for one of the string values in the array

Hi, I am fitting a weighted least square regression and trying to compute SSE,SST and SSReg but I am not getting SST = SSReg + SSE and I dont know what I am coding wrong. Can you help please? xnam <-colnames(X) # colnames Design Matrix fmla1 <- as.formula(paste("Y ~",paste(xnam, collapse=

Hello everyone, I''m almost cracking my head trying to do this birthdate validation. It turns out that I can only accept users with at least 18 years old and I''m trying to validate it writing this code on my user.rb fil at app/ models class User < ActiveRecord::Base validates_presence_of :full_name validates_presence_of :street_address validates_presence_of :city

Hi, I've extracted netcdf data in R, and am trying to output it in a matrix format. I can make the matrix, and I have the data, but I can't get the matrix to include the data... I'm not very experienced at using R, so please forgive the crudeness of these codes... # For the matrix wind_dir_data<-matrix( NA, 17, 365 , byrow = FALSE ) wind_speed_data<-matrix( NA, 17, 365,

Dear R Users, I was hoping for some help with a recurrent error message in lmer. I am trying to model the effect of temperature on metabolic rate in animals (response = int.length) at different temperatures (mean.sst), with repeated measurements on the same individuals (random effect = female). Ideally I would make a random slope and intercept model where the rate can change differently with

Hello I am a new user of R . and I ve problem with R and netcdf . I succed installation , I could use all examples . But when I take my netcf it is different . I want to do statistic on this kind of file . 1) first calculate mean . my data is like that through ncdump -h test.nc netcdf test { dimensions: lat = 301 ; lon = 401 ; time = UNLIMITED ; // (80 currently)

Hello, This is probably very simple but I am trying to select a region from the OIv2 SST dataset that crosses 0 longitude. The longitude variable is arranged from 0 to 360 and I get an error message when trying to go from 330 to 30 for example. The data are from a NOAA netCDF file. *temp = open.ncdf("c:/documents and settings/theoni/desktop/sstoi_v2.nc") print(temp) y1 = get.var.ncdf(

Hi- I'm wrestling with some of my data apparently not being called into a GLM or an LM. I'm looking at factors affecting fish annual catch rates (ie. CPUE) over 30 years. Two of the factors I'm using are sea surface temperature and sea surface temperature anomaly. A small sample of my data is below: CPUE Year Vessel_ID Base_Port Boat_Lgth Planing SST Anomaly 0.127

Hi, I render a couple of date_select fields, the HTML looks fine, I can see the values submitted back to the server, but AR doesn''t pick them up from the hash in Booking.new(params[''booking'']). I''ve got a ''booking'' object with parameters product, startdate and enddate. HTML snippets: <select

I have a dataframe that looks like this: > str(chr) 'data.frame': 84 obs. of 7 variables: $ county: Factor w/ 3 levels "Broome","Nassau",..: 3 3 3 3 3 3 3 3 3 3 ... $ item : Factor w/ 28 levels "Access to healthy foods",..: 21 19 20 18 16 3 2 6 17 8 ... $ value : num 8644 15 3.5 3.9 7.7 ... $ low : num 7897 9 2.5 2.6 7 ... $ high : num 9390