On Thu, 30 Nov 2006, Duncan Murdoch wrote: > On 11/30/2006 6:55 AM, Milton Cezar Ribeiro wrote: >> Hi there, >> >> I have a big amount of "lists" of data, each one with dimension >> 1024x1024. When I save it in an ASCII file (using "write" function) it >> take about 15 minutes. As I need run about 500,000 times this same >> routine, and I would like to do this save task in a fast way. > >> In fact I will use these output files in another program that read >> ASCII or RAW/Generic Binary (8bits) formats. Each value from my lists >> ranges from 1 to 200 (integer values). > > I think this depends on the details. Can you show us what str() gives > for one of these lists? Can you tell us how flexible the other program > is about the format of what it needs to see? "RAW/Generic Binary" > sounds like a format for an image from a digital camera; there might be > packages available in R that are specifically designed to write that > format but I don't know them.
Sounds like a job for writeBin(size=1). -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
