Chris questions

• Counting an event only every X days per subject (in an irregular time series)
• Modifying width of outline in a pie chart in R--what is the equivalent of lwd parameter for pie()?
• Exporting multiple panels of plots and data to *.png (in the style layout() works within R)
• Using loops with knitr to produce multiple pdf reports... need a little help to get me over the hump

Chris answers