[R] R video

[Thomas Petzoldt]

David Khabie-Zeitoune schrieb:

> Hi
> 
> Does anybody know of any R packages under Windows to produce video files
> from a sequence of R graphs -- e.g. in .wmv or avi format?

Hello,

some times ago I've testet several methods and found the following to be 
useful and effective:

1.) Create a numbered sequence of bitmap images on the harddisk:

for(i in 1:nruns) {
   bmp(filename=paste("pp", i+1000, ".bmp", sep=""))
   plot(.........) # some plotting commands
   .........
   dev.off()
}

2.) Convert the bitmaps to a color depth of 16.7 Mio colors. For this 
purpose I use the freeware program IrfanView (http://www.irfanview.com).
Hint: File - Batch Conversion - Button "Set Advanced Options", Change 
Color Depth, 16.7 Million. Then select the files to convert, the 
destination path and the output format (.bmp), press the Start button 
and relax.

3.) Get the program "bmp2avi" (search the web for it) and convert the 
.bmp images to a video (avi) file.

4.) If the video is too large, use a video compression utility (e.g. the 
GPL licensed VirtualDub) to compress it.

5.) There are some alternative ways of creating animations using 
non-free software or tools to make animated Gifs.


Thomas



-- 
Thomas Petzoldt
Dresden University of Technology
Institute for Hydrobiology         petzoldt at rcs.urz.tu-dresden.de
01062 Dresden                      http://www.tu-dresden.de/fghhihb/