On 28/02/2008, Roger Bivand <[EMAIL PROTECTED]> wrote: > > On Wed, 27 Feb 2008, Rainer M Krug wrote: > > > Hi > > > > Sorry for crossposting, but I think this can be of interest for GRASS > and R > > users. > > > Yes, please avoid cross-posting - the discussion ends up on many different > lists and threading can break down if the threading implementation in mail > clients and archives doesn't like cross-posting.
OK - I'll avoid it in the future and continue this thread on grass-dev. The only complete thread I have found is on Nabble at: > > > http://www.nabble.com/Plan-to-build-Package-to-use-GRASS-from-R-tt15712877.html#a15712877 > > for the grass-dev list. > > In summary, the problems are mostly those of appropriately quoting shell > commands through system() across platforms. Those interested should follow > the discussion on grass-dev. > > The correct lists could be either here, or the grass-stats list; could I think I will leave it at the grass-dev list, altohough it concerns grass and R - it is more a devel issue then for the grass-stats list. Rainer post a summary to both (hopefully in-thread) on conclusion? OK - I will do so as soon some ideas and further palns emerge. If I have a working solution, would it be possible to include it into the spgrass6 package? Thanks Rainer Roger > > > > > > I am planning to write a package to make the use of GRASS from R easier. > The > > idea is to wrap the system call to execute the GRASS command into an R > > command of the same name. > > e.g: > > r.to.vect <- function(..., intern=TRUE, ignore.stderr=FALSE) > > { > > comm <- paste( "r.to.vect ", ..., sep="" ) > > print(comm) > > system( comm, intern=intern, ignore.stderr=ignore.stderr ) > > } > > > > My questions are: > > > > 1) Is this a good way of doing it, or is giving a named list to the > function > > more usefull? > > 2) Is there a way to obtain easily all commands from GRASS and the > > parameters possible and required? > > > > Any ideas and comments welcome, > > > > Rainer > > > > > > > > -- > > Roger Bivand > Economic Geography Section, Department of Economics, Norwegian School of > Economics and Business Administration, Helleveien 30, N-5045 Bergen, > Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 > e-mail: [EMAIL PROTECTED] > > -- -- Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation Biology (UCT) Plant Conservation Unit Department of Botany University of Cape Town Rondebosch 7701 South Africa
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