Doubt in labelling data for machine learning in MATLAB.

Hello all, I am trying to do classification task of Mrandom -1 and 1 symbols using SVM in MATLAB. The input feature vector is based on energy levels and is shown as and and the correspnding training labels are given as .

I am able to compute the input feature vectors but not getting how to construct the training labels.

Any help in this regard will be highly appreciated.