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I'm new to using sql so I'm having difficulties (and worries) in adding a new column of data to a table I have. Its a very large file (around 5 Gb) which is why I'm having to use SQL I have a table with variables ID, IDrec and IDdes and the variables IDrec and IDdes give a mapping of some other values but the other values are associated with the ID variable (think of IDrec and IDdes

...ce use would cause a variable conflict like this? I have no idea where to start troubleshooting this error, so any advice would be appreciated. Thanks! Anthony Damico Kaiser Family Foundation ------------------------------ Message: 54 Date: Fri, 10 Dec 2010 13:18:21 -0500 From: Michael D <mike409 at gmail.com> To: r-help at r-project.org Subject: [R] help with RSQLite adding a new column Message-ID: <AANLkTikL9tqK=RZphOVs8FCPYKCXF2CMAiXfWQtuEsGt at mail.gmail.com> Content-Type: text/plain I'm new to using sql so I'm having difficulties (and worries) in adding a new column...

I have a bunch of files named "[identifier1].[identifier2].[yyyymmdd].[hhmmss].txt" and im having trouble updating my read script for the timestamp. I've been using file.exists and a for loop but its highly inefficient and cumbersome. Would there be someway to create an object containing the string of each .txt file in some directory and to sort them by the date and time stamps so

So I'm in a stochastic simulations class and I having issues with the amount of time it takes to run the Ising model. I usually don't like to attach the code I'm running, since it will probably make me look like a fool, but I figure its the best way I can find any bits I can speed up run time. As for the goals of the exercise: I need the state of the system at time=1, 10k, 100k,