Hi again,
Later on I realised I had made some fundamental programming errors
resulting in the mentioned segfault entirely not related to rcpp. (fixed
now by the way).
I know that does not earn me many brownie points, so my apologies for my
sloppy code. ;)
Thus far I can say that I still really like the rcpp package and keep
thinking of new ways I could use it.
Berry
On 03/20/2013 11:15 PM, Berry Kriesels wrote:
Hi everybody,
Just now I was playing around with Rcpp in combination with Qt (I have
found an excellent example on this). And decided to have a go(small
dummyproject) at this myself. Problem is that the application
segfaults when I run it.
QtR.h
http://pastebin.com/AXT144SK
QtR.cpp
http://pastebin.com/JUUuCFN2
main.cpp
http://pastebin.com/yWUmDL17
mainwindow.cpp
http://pastebin.com/gE84ZtxH
I create an instance of my QtR class called qtr which creates an
RInside session in the constructor. In my mainwindow.cpp I reference
to my instance of qtr and then invoke the loadData method. In the
loadData method I try to use
m_R.parseEvalQ("cat("+fname_no_ext+"',file='outfile.txt',sep='\n')");
This results in a segfault.
However when I remove this line from the loadData method and add the
m_R.parseEvalQ("cat("+fname_no_ext+"',file='outfile.txt',sep='\n')");
line to the constructor of QtR which is invoked in main.cpp it runs
without trouble.
I probably am making a very obvious mistake. But I seem unable to see
the issue at this point myself.
Berry
PS
I have used pastebin for readability, or would everybody prefer the
code within the e-mail?
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