Idempotents of matrix in matlab

I have code for a transmission line:

for k=1:Ns
  % Function to calculate Idempotents of Y*Z
  [Hk] = HkIdem(ZL(:,:,k),YL(:,:,k),lenght,f(k), md,Hm(k,:));
  HkIdem(:,:,:,k) = Hk;

but the matlab error is :

Undefined function or method 'HkIdem' for input arguments of
type 'double'.

I know that HkIdem is not a MATLAB function, and there is no function called that defined in all of the code that I have, but how can I calculate the Idempotents of matrix in matlab?

[Geoff Hayes]

Mohsen - the above code seems to be taken from the paper An Advanced Transmission Line and Cable Model in Matlab for the Simulation of Power-System Transients by Octavio Ramos-Leaños, Jose Luis Naredo and Jose Alberto Gutierrez-Robles. Have you looked at the references?

You may want to check out Idempotent Line Model: Case Studies, Proceedings of the International Conference on Power System Transients, IPST, Seattle, USA, Jun. 1997 by Marcano & Marti.

[Star Strider]

It seems to be in this book chapter: http://www.intechopen.com/books/matlab-a-fundamental-tool-for-scientific-computing-and-engineering-applications-volume-1/an-advanced-transmission-line-and-cable-model-in-matlab-for-the-simulation-of-power-system-transient. I’ll let you search for it.

[Mohsen]

Dear geoff yes , i worked on it for my paper term but there are some problems there in the code , one of them is this . Do you have any idea? thanks for ur help

[Geoff Hayes]

Mohsen - that code is copied directly from the document/paper that has been noted above (in both comments), right down to the typographical error with lenght. Have you checked the references for a solution? Have you contacted the authors of the paper?

[Sert]

Hi,

I'm working with the same code. It appears that ModeDelay function also does not exist. Were you able to solve the problem?

[amjad]

hi, i'm working with the same code . in his thesis he didn't mention those function (HmIdem and ModeDelay) . did someone contact him ? or found the missing code. thank you

[Alireza MASOOM]

It seems you all working with Wida band Line, th eorigin of code is with Ramos.

Answer 1

[Emanuel Rosas]

Please see attached the requested functions