search for: conditionb

i have: class Library << ActiveRecord::Base has_many :books end class Book << ActiveRecord::Base belongs_to :library end in my controller i have: render :xml=> Library.find(:all).to_xml(:include=>books) but, i would like put a condition in the books ( e.: pages >= 100 ) i would like to create a xml with all Libraries, but books with pages more than 100) How to

...processes, and for each of them I get numbers for failures and successes. I've two or more conditions under which I test these processes. If I had just one process to test I could just perform a fisher or chisquare test on a 2x2 contigency table, like this: for one process: conditionA conditionB ok 20 6 failed 190 156 >From the table I can figure out if the outcome (ok/failed) is bound to one of the conditions for a process. However, I'd like to know how different the 2 conditions are from each other considering all 300 processes, and I consider the processes to be an add...

...0.000139 *** (I also realize that subjects are included just as random intercepts instead of random slopes in this second model.) *Questions* There are several things I'm unsure about: 1. How does glmer() treat dummy variables (e.g. categories like "conditionA" and "conditionB", or "optionA" and "optionB")? That is, how can I interpret the effect direction (whether the z-value is negative or positive)? 2. I've plotted the relationship between effect and reading comprehension, and conducted separate analyses, and found no relat...

Dear R-users, I haven?t found rules for logical operators. I need to select data according the following rule: Condition A & (Condition B | Condition C) How should I write it?? Is Condition A & Condition B | Condition C correct or will R execute (Condition A & Condition B) | Condition C ? Thanks for your help. Delphine Fontaine Delphine Fontaine Statistician Statistics