Hi, based on previous work professor comments mentioned below. The name of AO_K3_best_01458 is not important. When you are writing this file (you are creating the file here) in tj_trainin_best.c “sprintf(filename, "AO_%d_best_3_tr01256.dat", it); fp=fopen(filename, "wt");” You can change the name and call it as you want. For example also example.dat.

Don’t search this file in other directory. When you will create the file with the code above, take track of the directory. You will, use this path for matlab. The file centri inside grosso like centri_01458_neww_2.dat are not for you. Don’t use it. Don’t use the directory grosso. The only input files that you have to use are inside the directory tracking. center_1. Dat .. until center_10.dat are your input files. Also tj_full_1.dat . all files are in this directory. In matlab change manually the path inserting the correct path where you are creating your example.dat. Ok?