October 2008

Plotting Math in R

October 29, 2008 | Yu-Sung Su

Plotting math in R can be acheived using the expression(). To know detailed usage, in R console,demo(plotmath)But expression() is not flexible when you want to plot math symbols and parameters altogether. In this case, we use bquote() which is actually a wraper for substitute() and quote(). It ... [Read more...]

Working with directories

October 24, 2008 | R Tips

Something quite annoying to me is when I get an R script and I have to change all of the file references in the script. I get something like this this: source("C:\\Documents and Settings\\UserName\\Data\\...\\File1.R") data [Read more...]

What I’ll be presenting at O’Reilly Money Tech 2009

October 21, 2008 | mike

(April 2009 Update:  Unfortunately, The Money Tech Conference was indefinitely postponed, but fortunately I will be presenting a version of this talk in July at OSCON 2009). I’ve been invited to speak at O’Reilly’s Money Tech conference this coming February 4-6th in New York City and thought I’... [Read more...]

Another solution to the R to Word table problem

October 17, 2008 | John Johnson

Last time I used an HTML solution. This time, I create an RTF file:# function: my.rtf.table# purpose: convert a matrix, data.frame, or array into a rtf table# output: text for RTF, possibly written to a file# inputs:# tab - a table, dataframe, or array (needs rownames and ... [Read more...]

Time series packages on R

October 16, 2008 | Rob J Hyndman

There is now an official CRAN Task View for Time Series. This will replace my earlier list of time series packages for R, and provide a more visible and useful entry point for people wanting to use R for time series analysis. If I have missed anything ... [Read more...]

R’s working directory

October 3, 2008 | Michal

Do you usually start R with a desktop icon or some other shortcut? Are you tired of using setwd and getwd each time after you start R to get the working directory correctly? If so, then your days of suffering might be just coming to an end. Having the working ... [Read more...]

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