that is wrong way of doing it
try this:
QByteArray bytesArray
QDataStream out(&bytesArray ,QIODevice::WriteOnly);
out << someVector; //saves it
////////////////////////////////////////////////////////////////////
QDataStream in(bytesArray);
QVector<qreal> otherVector;
in >> otherVector; //load
Please note that qreal is only 99.9% safe when saving to stream and sending it around to programs built with other versions of Qt. use QVector<double> instead
