Index in position 2 exceeds array bounds.

it showed that Index in position 2 exceeds array bounds. error appears at line 77. Anyone knows how to modify this problem and also this kind of problem

[Geoff Hayes]

Bosheng - what are the dimensions of Syn_Data? Presumably there are at least 61 columns (?) or perhaps not because of the error...

Also, please copy and paste the full error message to this question.

[Alex Mcaulley]

This error shows that size(Syn_Data,2) is less (at least) than 61

[Bosheng Chen]

Syn_Data is 2396x154 double

please remind me how to modify it