search for: ccheaton

Hi, I have a model called Stock with a value called "strength." I wrote a simple method in the Stock.rb model file to update the value of "strength" for each record in the stocks table. I created a controller called fix_controller.rb. I don''t have access to the live system, so the idea is that an admin will go to http://url/fix and a script will run to check and

Hi, very new to R here... I have a data frame called 'set' with 100k+ rows in it that looks like this: subject timestamp yvalue traceabs subjtrace 1 1 1992-07-12 06:05:00 12 1 1-1 2 1 1992-07-12 06:10:00 15 1 1-1 3 1 1992-07-12 06:15:00 17 1 1-1 4 1 1992-07-12 06:20:00 20 1 1-1 5

Hi, I'm working with timeseries data. The values are every 5 seconds and each series can last up to 4-5 days. To generate the x-axis labels, I'm doing the following: ========================= # Variable for displaying hours on the x-axis rtime <<- as.POSIXct(round(range(timedata), "hours")) # Variable for displaying days on the x-axis stime <<-

I have a Person model with attributes first_name and last_name. I want to implement autocomplete search that looks that the entire name. Hence I have a method: def full_name self.first_name + " " + self.last_name end Is it possible for me to query on full_name and have rails match the first_name and last_name fields? I currently receive this error when I try, because full_name

Hi, pretty new with R and LaTeX here... I'm trying to use the latex() function from the Hmisc table with Sweave. When I try: pdflatex myfile.tex I get an error that reads: ! Undefined control sequence. l.22 \ctable It seems like this is an optional package for Tex that I haven't installed? My googling skills have neglected to locate instructions for how to install ctable on a Mac,

Hi, I'm trying to learn R for a project I'm working on. I know several programming languages, so I'm comfortable with the syntax. What I can't figure out is how to import the file of time series data that I have and parse it into individual series. The data was given to me in Excel, but I can output it to tab-delimited or csv. I've been able to pull in the entire table with