vector<shared_ptr<Channel> > channels,
float *data_pointer, unsigned int num_samples, const Quantity *mq,
const Unit *unit, vector<const QuantityFlag *> mqflags);
vector<shared_ptr<Channel> > channels,
float *data_pointer, unsigned int num_samples, const Quantity *mq,
const Unit *unit, vector<const QuantityFlag *> mqflags);