std::shared_ptr<dataset> generic_sample_factory::create_sample(const std::string & path_sample) {
std::shared_ptr<dataset> sample_data(new dataset);
size_t sample_dimension = 0;
std::ifstream file_sample(path_sample);
if (file_sample.is_open()) {
std::string file_line;
while(std::getline(file_sample, file_line)) {
if (file_line.empty())
continue;
double value = 0.0;
point sample_point;
std::istringstream stream_value(file_line);
while(stream_value >> value) {
sample_point.push_back(value);
}
if (sample_dimension == 0) {
sample_dimension = sample_point.size();
}
else {
if (sample_dimension != sample_point.size()) {
throw std::runtime_error("Points from input data set should have the same dimension.");
}
}
sample_data->push_back(sample_point);
}
}
long nnet::XmlFile::ReadLong( xmlNodePtr node, std::string name ) {
long value;
std::string value_string = GetString( node, name );
std::istringstream stream_value( value_string );
stream_value >> value;
return value;
}
