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Answer to my own question: ush <- data.table(read.csv(...)) setkey(ush, product_id) s1 <- ush[J[product.id]] > user system elapsed > 0.000 0.000 0.003 > It seems like that's the method to use! Amazing. -- View this...
Wow, these specs are fantastic: > user system elapsed > 0.33 0.00 0.39 > I wonder how much of that is because of the capacity of the box that you are running R on. Can you post pertinent specs? This...
So, here is the result time from using the datatable package: > user system elapsed > 0.800 0.012 1.847 > Here are the methods that I am using: ush <- data.table(read.csv(...)) setkey(ush, product_id) s1 <- subset(ush...
Hey All, First time on these forums. Thanks in advance. Soooo... I have a process that was functioning well before the 2.14 update. Now the HoltWinters function is throwing an error whereby I get the following: Error in HoltWinters...
Update from email outside of this thread: Justin Haynes writes: > matrices will help, but two quick solutions: > > if you are looking for single items to go in the some_value space, use == > instead of %in% and you'll notice speedups...
Hey All, So - I promise to write a blog post on this topic and post it somewhere on the internet once I get to the bottom of this. Basically, the set-up to the problem is like this: 1. I...
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