search for: quantity

Hi, I have a data set similar to the following State Gender Quantity TX Male 1 NY Female 2 TX Male 3 NY Female 4 I need to calculate cumulative sum of the quantity by State and Gender. The expected output is State Gender Quantity CumQuantity TX Male 1 1 TX Male 3 4 NY Female 2 2 NY Female 4 6 I highly appreciate if someone can give me some hints on solving that...

...e is my df: avprix <- structure(list(DESCRIPTION = c("CORN Jul/10", "CORN May/10", "ROBUSTA COFFEE (10) Jul/10", "SOYBEANS Jul/10", "SPCL HIGH GRADE ZINC USD", "STANDARD LEAD USD"), prix = c(-1.5, -1082, 11084, 1983.5, -2464, -118), quantity = c(0, -3, 8, 2, -1, 0), fees = c(-8.64, -30.24, -26.4, -25.92, -37.5, -25)), .Names = c("DESCRIPTION", "prix", "quantity", "fees"), row.names = c(NA, -6L), class = "data.frame") I want to group together all the rows with quantity=0. This follow...

I have > df quantity branch client date name 1 10 1 1 2010-01-01 one 2 20 2 1 2010-01-01 one 3 30 3 2 2010-01-01 two 4 15 4 1 2010-01-01 one 5 10 5 2 2010-01-01 two 6 20 6 3 2010-01-01 three 7 100...

I am using this line on my index.rhtml page to capture the quantity required of a particular item for a basic shopping cart app: <%= text_field ''line_item'', ''quantity'', {:size=>3} %> </td> but my next screen (a cart screen) doesn''t reflect what was entered in that text field when the item is added to t...

...rder specs using mock_model. I thought I should focus my specs on each model and always mock associated models. In my Order model I need a way to merge OrderItems which have the same cost and same product_id. That I can spec. The other thing this merge helper function should do is increment the quantity of the merged OrderItems. Below @order_item1 and @order_item4 would be merged into one item with a quantity of 2. Here are my OrderItems mocks: @order_item1 = mock_model(OrderItem, :valid? => true, :product_id => 1, :cost => 1, :null_object => true) @order_item2 = mock_model...

...h renders rjs), I''m faced with the fixture- driven way of spec-ing or mocking. How the heck to you mock this so the code at line (2) and (4) work right? I''m still struggling with mocks but it seems like this can be done. Forgive the naivety of this question. 1. def change_quantity 2. @line_item = LineItem.find_by_id(params[:id]) 3. unless @line_item.nil? 4. @line_item.update_attribute(:quantity, params[:quantity]) 5. @extension_id = "extension#{params[:id]}" 6. end 7. end Thanks

...provide the user the option to update quantities. Here''s the rhtml code: <%= start_form_tag :action => ''update_cart'' %> <% for @item in @items %> <%= @item.product.title %> <%= text_field "item[]",''quantity'' %> <%= number_to_currency(@item.unit_price) %> $<%= @item.quantity * @item.unit_price %> <%= link_to ''Remove item'', {:action => ''remove_from_cart'', :id => @item.product} %> <% end %> Total...

I am trying to aggregate data in column 2 to identifiers in col 1 eg.. take this> identifier quantity 1 10 1 20 2 30 1 15 2 10 3 20 and make this> identifier quantity 1 45 2 40 3 20 Thanks in advance for your...

I am trying to validate an integer field called quantity. I don''t know how to chack if it has gone beyond or below the maximum or minimum value allowed by the Firebird RDBMS. I tired adding this code to the validate method in the model: if (quantity > -2147483648) and (quantity < 2147483648) errors.add("quantity", &q...

I tried to use named parameters in my SQL query , using find_by_sql Order.find_by_sql ([select * from orders where amount > ? and quantity > ?", [ @amount, @quantity ] works;.. but Order.find_by_sql ([select * from orders where amount > :amount and quantity > :quantity ", [ :amount => @amt, :quantity => @qty ] is not working a I wrong or should I use a plain select string ? tfyl kad -- Posted via http:/...

Hi, I am trying to use method `validates_presence_of'' for validating my input fields on form . I m using it in my action class as follows:- ======================= validates_presence_of(params[:product][:quantity]) ====================== But when I am running my application i m getting error like:- ========================= undefined method `validates_presence_of'' for #<ProductsContr ========================= What is problem here?? Also I want to validate the field on my form (quantity) for i...

Hi all, I have the shopping cart page where a user can add items dynamically through ajax as explained in Railscast episode 75. I am using observe_field to observe the ''quantity'' and ''cost'' fields to update the total field for each item. This does not work however, for records that are added through the Ajax. How can i name the fields and observe them as i have explained? is observing the best way to go? Really appreciate any help. --~--~------...

When I add an item to the shopping cart, I get an error: undefined local variable or method `cart_item'' for #<#<Class:0x3715a78>:0x3715a48> Session info says the cart being updated properly. I''m just not able to output two variables: <%= cart_item.quantity %> &times; <%= h(cart_item.title) %> I did some research, and I can grasp that local variables aren''t accessible here, but I''m not sure how to troubleshoot and find where the problem occurs. (I''m coming from php and coldfusion, so maybe my head is warped in...

...ntrollers/customer_controller.rb:36:in `session'' app/controllers/customer_controller.rb:36:in `add_to_cart'' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My controller is ... def add_to_cart if request.post? product_id = params[:product_id] quantity = params[:quantity] account = get_account() error)---> session[:cart] = SessionCart.new(account) if session(:cart).nil? session[:cart].add_product( product_id) if quantity >= 2 and quantity <= 50 for i in 1..quantity-1 session[:cart].add_product(product_...

...om 1:365 but there are not necessarily that many rows in the list. What I want to do is make every row in the list of lenght 365 and have the values correspond to the sum of the DayOfYear in the list if present and 0 if not. For example the first item in the list looks like: $`100026` DayOfYear Quantity 1 3 1 2 30 1 3 149 1 4 156 1 5 3 1 Notice that there are not entires for each 'DayOfYear'. I would like to replace list list maintaining the same data structure with something like: $`100026` DayOfYear Quantity...

an example available on the net goes like > df identifier quantity 1 1 10 2 1 20 3 2 30 4 1 15 5 2 10 6 3 20 > aggregate(df$quantity, by=list(df$identifier), sum) Group.1 x 1 1 45 2 2 40 3 3 20 I'd like Group.1 to retain the name "identifier...

...my view and then pass along that value to my model My view code is this: <td width="40" align="center"><%= text_field ''product'', ''qty_added'', {:size=>3} And I''m trying to pass the qty_added variable to my model. item.quantity = qty_added It doesn''t seem to be working.. I''m sure I''m missing many fundamental things but if somebody could start me down the correct path.. Thx.. -- Posted via http://www.ruby-forum.com/.

>From what I read this should work. So please help my misunderstanding: > x <- data.frame(Name=c("A","A","C"), Category=c("a","a","b"), Quantity=c(1,2,3)) > x Name Category Quantity 1 A a 1 2 A a 2 3 C b 3 > aggregate(x, by=as.list(setdiff(names(x),"Quantity")), sum) Error in FUN(X[[1L]], ...) : arguments must have same length The way I understand it is that 'aggegat...

Dear all, I'm writing my manuscript to publish after analysis my final data with ANOVA, ANCOVA, MANCOVA. In a section of my result, I did correlation of my data (2 categirical factors with 2 levels: Quantity & Quality; 2 dependent var: Irid.area & Casa.PC1, and 1 co-var: SL). But as some traits (here Irid.area) are significantly influenced by the covariate (standard length, SL), I need to use the partial correlation. I know how to calculate it with JMP, but as I used R to analyse all of my data...

What is the most elegant way to save new one-many associations? order = Order.new(:name => "My Order") order.line_items << LineItem.new(:product_id => 1, :quantity => 2) order.line_items << LineItem.new(:product_id => 2, :quantity => 5) order.save The above - which is by far the most elegant way of putting it - doesn''t work for me - the line_items don''t get saved. Presumably because the order does not have an id yet, so th...