similar to: collection_text onchange event

Hi there, Just wondering if anyone has any tips for using arrays? I am trying to convert the following SAS code to R: data A2; set A1; by subject_id; retain BX1-BX10 i; array b(1:10) BX1-BX10 ; if first.subject_id then do ; do j=1 to 10; b(j) = .; end; i=1; end; b(i) = BX; i = i+1; if last.subject_id then

Hello everyone, I have a .csv file with the following format: uniqueID SubjectID Distance_miles Tag 1 1001 5.5 3 2 1001 7 1 3 1001 6.5 1 4 1001 5 1 5 1002

Hi there, I am interested in converting SAS code to R & I wondered if anyone had any quick R code/tips for the following piece of test SAS code? Any feedback greatly appreciated. data A1; set A1; count + 1; by subject_id; if first.subject_id then count = 1; run; [[alternative HTML version deleted]]

Dear R-help, I am creating a two lattice plots (a densityplot() and xyplot()) that have the same x-axes and then 'printing' them onto the same page, one above the other (see end of email for an example to generate the graph). With different labels on the y-axis for each plot the left spacing is different, and the x-axes don't align vertically. Although I can manually modify the

I am just assuming this can be done, but I have not gotten close to making it happen. I have a data file with about 1 million rows with 1470 unique subjects. Each row represents a small set of observations made on a specific date for a single subject. I would like to transform the data so that I have an R object with a single entry for each subject and start date and vectors for the

*Hi all, I know this is probably basic, but I have proven to be a slow learner in any programming language. Anyhow, how can I calculate the SD for each person in my table? I have two patients in this R data.frame, 7200 and 23955. I extracted this from a relational database, but am I better off attempting to compute SD in SQL, or is this easily accomplished in R? * SUBJECT_ID HR 1

hi, I want to display a subject drop down list and when i select some option from the drop down list i want to display all the questions under that selected category in the "SAME PAGE" and also get a form to add new questions in the same page. eg .. <%= collection_select(:question,:subject_id ,@subject, :id, :name) %> when i choose a subject i should, display all the

Hey, I can successfully pass a single object from any form field to my controller via: Select Year: <%= collection_select("vehicle", "year", @availableYears, "year", "year", {:prompt => "Select a year"}, {:onchange => "#{remote_function(:url => {:action =>

I''ve started an app with rails 1.1.6 then ran freeze_edge. My app will not run with rails in the vendor folder. Have I forgot to do something? I"ve been without the internet for the last two months. Has something changed?

I have an ADD form with foreign key field values selectable via select list ( collection_select (...)). When I add validates_presence_of :someotherfield to my model for error trapping, I get the following error for each droplist: NoMethodError in Reviews#create_curriculum Showing /reviews/_form.rhtml where line #16 raised: undefined method `inject'' for nil:NilClass Extracted source

Hello: I have something very order to create my object def review @bit = Bit.find(:first, :select => "bits.*,subjects.id as sid, subjects.name,gaps.id as gid, gaps.gap", :joins => "left join (subjects,gaps) on (bits.subject_id = subjects.id and bits.gap_id = gaps.id)", :conditions =>

Hi, I''m trying to have a checkbox, that when clickes sends an update to the server and in turn modify the UI with feedback on the success of the operation. The main difficulty I''m encountering is that I can''t pass the checkbox value if I use the standard PrototypeHelpers. I''m using remote_function to build the function call, but it doesn''t allow

Hi I am relatively new to ruby on rails. I want to use this javascript bundle: http://prototype-window.xilinus.com/index.html How would I call those functions in an rjs file? example: win = new Window(''window_id'', {title: "Sample", top:100, left:350}) win.getContent().innerHTML = "<h1>Hello world !!</h1>"; win.setDestroyOnClose();

Hi, I have the following code : <%=link_to_function("? | China", update_page{|page| page[''tags_en''].value = "China" page[''tags_ch''].value = "?" }) %> This updates two text fields with the China and ?. However I want to append the values, not replace them. So I need something like this :

In my rjs template I''m using the following line. page.visual_effect :slideUp, ''comment_error_details'', :duration => 0.5 It works fine if I have created the div with the id="comment_error_details", but if I haven''t created the error yet then my whole rjs template fails. How can I check to see if an element has been created? I could then put

I''m trying to figure out how to best allow a user to click a link_to_remote (or something like it) that will make the clicked thing disappear and replace it with a "Saving..." or "Please wait..." image until the server round-trip is complete. Once complete, it needs to replace the HTML in that span or div with text from the server. I imagine it will involve

Hi, I want to show 3 products every 5 seconds using AJAX. I want to get 3 random products from the database and show them. How would I go about doing that? Thanks David -- Posted via http://www.ruby-forum.com/.

Hi, I am calling an action via AJAX to update a div. The action needs to redirect the page in under certain circumstances. However, if I just use "redirect_to" in the action then of course what happens is that the page I want to redirect to replaces only the div, not the entire page, and I get messy nested layouts. Is there a way around this? Can I redirect the entire document from

The following code of tag clouds implementation: <%= link_to(h("<#{tag}>"), "tags/listmytag/#{tag}", { :style => "font-size: #{font_size}" } ) -%> I want to change it to ajax style: <%= link_to_remote "<#{tag}>", { :url => { :controller => ''tags'', :action => ''listmytag'', :id =>

Hi, I''m confused about how form verification with AJAX works. Let''s say I have a ''new.rhtml'' view that contains a form with two fields, and the form action is ''create''. Let''s assume that I also want to do some type of data validation on one of the two fields via AJAX before I submit the form. But since I''ve already