On Feb 2, 2014, at 5:09 PM, Dennis Fisher wrote: > R 3.0.1 > OS X > > Colleagues, > > I am experimenting with incorporating C code into R. After compiling the C > code with: > R CMD SHLIB -o FILE.so FILE.c > and executing: > dyn.load(“FILE.so”) > (without any errors), I execute the following R functions in a terminal > window: > READSAS <- function(sourcefile) .C("readsas", sourcefile) > OUTPUT <- READSAS("../SASFILES/sdrug.sas7bdat") > R / C then reads a sas7bdat file and sends the contents to the terminal > window. > > I expected OUTPUT to contain the text that appear in the terminal window > (i.e., the contents of the file). But, that is not the case; OUTPUT contains: > [[1]] > [1] "../SASFILES/sdrug.sas7bdat" > It is not clear to my how to capture that appears in the terminal window. > > Ultimately, I may need to modify the C code so that the output goes to a > file, which I then read into R. However, it would be better if I did not > need to modify the C code. > Does anyone have any ideas of how I can capture this output within R?
I wonder if this is a follow-up to the suggestion to look at ReadStat?: https://github.com/WizardMac/ReadStat I could imagine calling it from R but then directing results to a comma separated file along the lines of the second example. If my guess is correct, you might assist the R community and get valuable advice by posting your source and Makefile on R-devel. -- David. > > Dennis > > Dennis Fisher MD > P < (The "P Less Than" Company) > Phone: 1-866-PLessThan (1-866-753-7784) > Fax: 1-866-PLessThan (1-866-753-7784) > www.PLessThan.com David Winsemius Alameda, CA, USA ______________________________________________ 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.