index exceed matrix dimension error

Hi, I have a matrix of 13x15 double. I want to do randomization by using the coding below to discard 1st coefficient of the data.

The coding: Random_new_data = newdata(2:end, randperm(30));% column 2 to 13

However I got the "index exceed Matrix dimension error"

May I know what is the possible problem in the data? Thanks a lot.

Answer 1

[Zhang lu]

randperm(30) produces a vector ,including 1 to 30.

But your matrix's column is 15 .

So,it is possible that 'Random_new_data = newdata(2:end, randperm(15));'

[Hamzah amee]

Thanks a lot Zhang Lu.

This really help me! God Bless you.

[José-Luis]

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