Demitri Muna wrote:
Hello,
I am trying to use a C++ library I have to read some data into R. I've
gone over the "Writing R Extensions" page and some of the archives, but
am left somewhat confused (and I'm still very new to R!).
What I want to do is fairly simple. Given some parameters, I'd like to
read a string of numbers from a proprietary binary file into an array.
I have a C++ library that will read anything I need from this file.
What is the best way to do this? Can someone give me any pointers to
sample code?
You might be able to write a C wrapper around your C++ code and link
that into R, so R can get the data directly from a .C() call to your
wrapper function. See Writing R Extensions for details.
One possibility I've considered is writing a small unix command line
program that, given the parameters, will return the string of numbers.
Is there a way to "capture" this from R into an array?
Yes, this way will also work, please read the R Data Import/Export
manual and ?connection.
Uwe Ligges
Cheers,
Demitri
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