Dataset of visible-near infrared handheld and micro-spectrometers – comparison of the prediction accuracy of sugarcane properties oleh Abdallah Zgouz, Daphné Héran, Bernard Barthès, Denis Bastianelli, Laurent Bonnal, Vincent Baeten, Sebastien Lurol, Michael Bonin, Jean-Michel Roger, Ryad Bendoula, Gilles Chaix