Why can't i find the commands to Perform a Harmonic Analysis

I'm new to Matlab, I tried to use the function available in this page : Perform a Harmonic Analysis

But it seems that my version of Matlab doesn't contains those commands :

• pe_plotHarmonics
• pe_getHarmonics
• pe_calculateThdPercent

And it's keeps displaying the following Error message :

Undefined function or variable '....'

i have the R2013b, can somebody please explain to me why can't i use those command ?

[Star Strider]

Do you have SymPowerSystems? You have to have it to use those functions.

[KADEM Mohamed]

i do have :

Simscape => SimPower System => (Second Generation & Third Generation)

[Star Strider]

I don‘t have those, so I can’t guide you further on this particular problem. Go back to the documentation for ‘Perform an Harmonic Analysis’ and find out what you have to do to use those functions or create them from existing functions.