search for: bid

Okay first off here''s the error: You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.- Here''s the code in the model: def highest_bid @bid = nil @oldbid = 0 self.bids.each do |bid| if @bid == nil @bid = bid.max else if bid.max > @bid @oldbid,@bid = @bid,bid.max end end end @oldbid += 1 @dif = @bid - @oldbid if @oldbid != 0 @bid -= @dif if @oldbid != 0 @bid end Two questions: Is there an ea...

Okay I''ve been working on a little biding system. In my model I have class Item < ActiveRecord::Base has_many :bids def highest_bid @bid = 0 self.bids.each do |bid| if @bid == nil @bid = bid.max else if bid.max > @bid @oldbid,@bid = @bid,bid.max end end end if @oldbid == 0 "#{@bid} - #{@ol...

Hi, I am trying to create Bid/Ask for each second from a high volume stock and the only way I have been able to solve this is using loops to create the target matrix from the source tick data matrix. Looping is too slow and not practical to use on multiple stocks. For example: Bids Matrix (a real one is 400,000++ length): B...

After getting one list done, I am now struggling to form a data frame in C. I tried to do a list of lists which gives me : $<NA> $<NA>[[1]] [1] "BID" $<NA>[[2]] [1] 0.6718 $<NA>[[3]] [1] 3e+06 $<NA> $<NA>[[1]] [1] "BID" $<NA>[[2]] [1] 0.6717 $<NA>[[3]] [1] 5e+06 $<NA> $<NA>[[1]] [1] "BID" $<NA>[[2]] [1] 0.6717 $<NA>[[3]] [1] 17200000 and then as.dat...

Friends I have an xts that I wish to access. Browse[2]> DATA.ba[[p]]["2012-03-20 00:59:57","bid"] bid 2012-03-20 00:59:57 1.4993 So far so good. Now putting the index into a variable: Browse[2]> Time [1] "2012-03-20 00:59:57 NZDT" Browse[2]> DATA.ba[[p]][Time, "bid"] bid Where has it gone? Looking closer.... Browse[2]> inde...

...However, I'm wonder if I can use the effects package to plot the probabilities on the y axis and one predictor on the x axis, with the curve having the info for another predictor. So let's say our response variable is win, a binary variable. There are two predictors, home (categorical) and bid (continuous). For both home and bid, I want to generate plots showing the predicted probabilities for all the "levels" of that variable. For bid, that means the probability for winning at all bid levels. For home, the curve for the probability for winning at each level. df <- data.fr...

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I have the following data and am trying to find the percentage of bid values purchased for that price. So let's say I have a bid of 5 and it's sold 2 times for $3 and $5. Since the original bid was $5, the percentage of times that that bid value results in a sold purchase AT that specific bid level was 1/3 because of the three time where the bid was three, i...

Hello I am reshaping a data.frame bids --> reshaped as shown below. I thought this should be possible with a single invocation of reshape, but the only way I came up with is reshaping subsets for each keyword and then joining them together. Does anyone have an idea how to solve this in a more elegant way? Efficiency is a concern as...

I have a logit model with about 10 predictors and I am trying to plot the probability curve for the model. Y=1 = 1 / 1+e^-z where z=B0 + B1X1 + ... + BnXi If the model had only one predictor, I know to do something like below. mod1 = glm(factor(won) ~ as.numeric(bid), data=mydat, family=binomial(link="logit")) all.x <- expand.grid(won=unique(won), bid=unique(bid)) y.hat.new <- predict(mod1, newdata=all.x, type="response") plot(bid<-000:250,predict(mod1,newdata=data.frame(bid<-c(000:250)),type="response"), lwd=5, col=&...

Is there some way to observe when an association is added in a habtm relationship? I know I could turn the relationship into a model, but I don''t want to give up using :include in my finds... joshua

I''m working on a system that has a series od "bids" associated with "posts". Vurrently when a bid is placed I have it creating a new row each time in the "bids" table. The bids table has id, post_id, and user_id. The logic is to check to see if a bid already exists with a given post_id and user_id. If it does, then ju...

Hi Friends I am new here and have a problem Year Market Winner BID 1 1990 ABC Apple 0.1260 2 1990 ABC Apple 0.1395 3 1990 EFG Pear 0.1350 4 1991 EFG Apple 0.1113 5 1991 EFG Orange 0.1094 For each year and separately for t...

....00000,,105.59000000 2004-02-10 00:03:25.00000,,105.60000000 2004-02-10 00:03:39.00000,,105.59000000 2004-02-10 00:03:52.00000,,105.60000000 2004-02-10 00:03:54.00000,,105.60000000 # LINES OF CODE fxdata<-read.zoo(file=fxfile,FUN=as.POSIXct,sep=",",col.names=c("date"," bid","ask")) fxdata<-fxdata[( fxdata[,"bid"] > 0.0 ) & ( fxdata[,"ask"] > 0.0 ),] aggfxdata<-as.zoo(aggregatebyminutes(zooobj=fxdata,aggtimeframe=aggtimef rame)) #======================================================================= ===============...

Where is the best place to solicit bids on a mid-size web app? (budget ~$15,000) What is the appropriate protocol for posting RoR RFPs? Thanks! Taylor -- Posted via http://www.ruby-forum.com/.

...---------------------------------------------------- ------------------------------------------------------------------------ ---------------------------------- fxdatab<-structure(c(0,4,0,4,0,4,0,4),.Dim=c(4,2),.Dimnames = list(c("1","2","3","4"),c("bid","ask")), index=structure(c(1144049400,1144049400,1144049400,1144050402),class=c(" POSIXt","POSIXct"),tzone = ""),class="zoo") print(fxdatab) fxdatab<-fxdatab[(( fxdatab[,"bid"] > 0.0 ) & ( fxdatab[,"ask"] &gt...

...load and store instructions) in terms of the loop induction variables. I observe that the Scalar Evolution analysis is returning more expressions than I expect - including ones that are not defined in terms of the loop induction variable. For instance in the following code: for(unsigned long int bid = 0; bid < no_of_queries; bid++){ unsigned long int currNode = no_of_nodes / 2; // process levels of the tree for(int i = 0; i < logN; i++){ if((knodes[currNode].key) > keys[bid]){ currNode = knodes[currNode].left_id; } else if ((knodes[currNode].key...

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...to 8bit by hypatia.math.ethz.ch id j186djX0017423 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on hypatia.math.ethz.ch X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=AWL,BAYES_50 autolearn=no version=3.0.2 Hi R-friends, i have large dataset in the following structure: BID;TERRCODE;ANMCODE 200310413290002;4;0 200310413290002;80;0 200310413290002;2;0 200310413290002;5;0 200310413290003;3;0 200310413290003;1;0 200310413290003;11;0 200310413290003;26;0 200310413290003;141;21 200310413290003;472;0 200310413290004;3;0 200310413290004;1;0 200310413290004;7;0 20031041329000...

Hi: I want to obtain a particular value from a data.frame. Following is my dataframe: > Quotes BID ASK Name CT2 GOVT 99.92969 99.9375 CT2 TUM0 COMDTY 108.53125 108.5469 TUM0 CT5 GOVT 100.10156 100.1094 GT5 FVM0 COMDTY 115.56250 115.5703 FVM0 TYM0 COMDTY 116.93750 116.9531 TYM0 If I try to run: QuoteTUM0BID = Quotes[Quotes$Name %in% "TUM0", "BID"]...