Dear All, I'd like to be able to have R store (in a list component) a compressed data set, and then write it out uncompressed. gzcon and gzfile work in exactly the opposite direction. What would be a good way to handle this?
Details: ---------- We have a package that uses C; part of the C output is a large sparse matrix. This is never manipulated directly by R, but always by the C code. However, we need to store that data somewhere (inside an R object) for further calls to the functions in our package. We'd like to store that matrix as part of the R object (say, as an element of a list). Ideally, it would be stored in as compressed a way as possible. Then, when we need to use that information, it would be decompressed and passed to the C function. I guess one way to do it is to have C deal with the compression and uncompression (e.g., using zlib or the bzip2 libraries) and then use readBin, etc, from R. But, if I can, I'd like to avoid our C code having to call zlib, etc, so as to make our package easily portable. Thanks, R. -- Ramon Diaz-Uriarte Statistical Computing Team Structural Biology and Biocomputing Programme Spanish National Cancer Centre (CNIO) http://ligarto.org/rdiaz ______________________________________________ R-help@r-project.org 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.
