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Dear R helpers,   I understand that this is absolutely unprofessional on my part and this group doesn't entertain such things. I have been associted with this group since last 1 and half years and have been immensely benefited by the noble service rendred by many R helpers.   So I take this opportunity to thank all of you and wish you all   "MERRY CHRISTMAS".   I sincerely apologize for using this platform for writing such an unprofe...

I am working on a project that has some complex table associations, and I am having a hard time declaring this association in a Model, and fear it can''t be done. Here is an example of my issue... class StoreType < ActiveRecord::Base; end class Store < ActiveRecord::Base; end class Department < ActiveRecord::Base; end class Product < ActiveRecord::Base; end A StoreType has

Dear r users, Few days ago I posted the same topic but unable to receive any suggestion. So I am asking this same question. I was trying to fit a garch(1,1) model to my dataset. But while executing I got a warning message "NaNs produced in: sqrt(pred$e)". And got the estimated sd's along with five "NA", but as per my best knowledge I should get only one