[Rcpp-devel] Rcpp matrix generation crashes my R session

[Dirk Eddelbuettel]

Hi Marc,

Welcome, and thanks for posting here.  

>From a quick glance, it looks like

  for(int loopCol = 0; loopCol < numbCues; loopCol++){
    for(int loop = 0; loop < numbCues; loop++) {
      weightsNet(1+loopCol, numbCues + 1 + loop)= pattern(loopCol,loop);
                            ^^^^^^^^^^^^^^^^^^^
    }
  }

is to blame.  loop runs from 0 .. numbCues-1, you add numbCues plus one and
are possibly getting more than numbCues+3:

  NumericMatrix weightsNet(numbCues+3,numbCues+3);

Hope this helps,  Dirk


-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com