Factor::Factor(SEXP fac) {
Rcpp::RObject x = Rcpp::RObject(fac);
SEXP classAttr = x.attr("class");
std::string className;
if(classAttr != R_NilValue)
className = Rcpp::as<std::string>(classAttr);
if(className != "factor")
throw std::range_error("Invalid SEXP in Factor constructor");
levelNames = Rcpp::as<std::vector<std::string> >(x.attr("levels"));
int nObs = Rf_length(fac);
observations.resize(nObs);
int *ip = INTEGER(fac);
for(int j=0; j < nObs; ++j)
observations[j] = ip[j]-1;
}
SEXP collapsedList(Rcpp::List ll) {
if (ll.length() == 0) return R_NilValue;
Rcpp::List::iterator it = ll.begin();
switch(TYPEOF(*it)) {
case REALSXP: {
Rcpp::NumericVector v(ll.begin(), ll.end());
Rcpp::RObject ro = ll[0];
if (ro.hasAttribute("class")) {
Rcpp::CharacterVector cv = ro.attr("class");
if ((cv.size() == 1) && std::string(cv[0]) == "Date") {
Rcpp::DateVector dv(v);
return dv;
}
if ((cv.size() == 2) && std::string(cv[1]) == "POSIXt") {
Rcpp::DatetimeVector dtv(v);
return dtv;
}
}
return v;
break; // not reached ...
}
case INTSXP: {
Rcpp::IntegerVector v(ll.begin(), ll.end());
return v;
break; // not reached ...
}
case LGLSXP: {
Rcpp::LogicalVector v(ll.begin(), ll.end());
return v;
break; // not reached ...
}
case STRSXP: { // minor code smell that this is different :-/
int n = ll.size();
Rcpp::CharacterVector v(n);
for (int i=0; i<n; i++) {
std::string s = Rcpp::as<std::string>(ll[i]);
v[i] = s;
}
return v;
break; // not reached ...
}
}
return ll;
}
void graphConvert(SEXP graph_sexp, residualConnectivity::context::inputGraph& boostGraph, std::vector<residualConnectivity::context::vertexPosition>& vertexCoordinates)
{
Rcpp::RObject graph = Rcpp::as<Rcpp::RObject>(graph_sexp);
std::string className = Rcpp::as<std::string>(graph.attr("class"));
Rcpp::NumericMatrix vertexCoordinates_matrix;
if(className == "igraph")
{
Rcpp::Environment igraphEnv("package:igraph");
Rcpp::Function isDirected = igraphEnv["is_directed"];
if(Rcpp::as<bool>(isDirected(graph)))
{
throw std::runtime_error("Input `graph' must be undirected");
}
Rcpp::Function layoutAuto = igraphEnv["layout.auto"];
vertexCoordinates_matrix = layoutAuto(graph);
igraphConvert(graph_sexp, boostGraph);
}
else if(className == "graphNEL" || className == "graphAM")
{
Rcpp::S4 graphS4 = Rcpp::as<Rcpp::S4>(graph);
Rcpp::S4 renderInfo = Rcpp::as<Rcpp::S4>(graphS4.slot("renderInfo"));
Rcpp::List nodes = Rcpp::as<Rcpp::List>(renderInfo.slot("nodes"));
Rcpp::Function length("length"), cbind("cbind");
if(Rcpp::as<int>(length(nodes)) > 0)
{
vertexCoordinates_matrix = Rcpp::as<Rcpp::NumericMatrix>(cbind(nodes["nodeX"], nodes["nodeY"]));
}
if(className == "graphNEL") graphNELConvert(graph_sexp, boostGraph);
else graphAMConvert(graph_sexp, boostGraph);
}
else
{
throw std::runtime_error("Input graph must have class \"igraph\", \"graphAM\" or \"graphNEL\"");
}
std::size_t nVertexCoordinates = vertexCoordinates_matrix.nrow();
vertexCoordinates.clear();
vertexCoordinates.reserve(nVertexCoordinates);
for(std::size_t i = 0; i < nVertexCoordinates; i++)
{
vertexCoordinates.push_back(residualConnectivity::context::vertexPosition((residualConnectivity::context::vertexPosition::first_type)vertexCoordinates_matrix((int)i, 0), (residualConnectivity::context::vertexPosition::second_type)vertexCoordinates_matrix((int)i, 1)));
}
}
