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Hi, I have a contact object . This contact has a address object >>Contact class Contact < ActiveRecord::Base has_one :address validates_presence_of :first_name ,:last_name end .>>> Address class Address < ActiveRecord::Base belongs_to :contact validates_presence_of :address end Addres has the following fields ; address, phone, fax, email In the contacts_controller I

Hola a todos, estoy procesando unos datos con las siguientes intrucciones que creo son del paquete stats: cloud(Imp89 ~ ImpTot89 * NDA | Edad, data = mtif, +       screen = list(x = -90, y = 45), distance = .4, zoom = .7) y obtengo el error: Error en eval(substitute(groups), data, environment(formula)) :  argumento ''envir'' númerico no tiene longitud uno La verdad es que no se

Hi R-experts, I am using the envfit function over an ordination of floristic data. The problem is that every time that I run it changes the results. Sometimes dramatically, selecting variables that the first time were not significant. I do not get what could be the problem or if is normal given the permutations are different. # the NMDS ordination gap_flor_NMDS_chord <- metaMDS(gaps_flor,

First things first: Hi all! I''ve been sucked into prototype and script.aculo.us develpment thanks (because of?) the Symfony PHP framework... I''d like to implement a feature on some admin pages, but I can''t seem to find the right search term to google it; I want to ask the user to confirm exit of a page, if she has changed anything on the forms displayed on it. I have