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zpk function portability issue

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Marco Ronchi
Marco Ronchi 2016-9-26
评论： Marco Ronchi 2016-9-28
zpk function portability issue. mtf1 = zpk(1,0,1,1) works with R14 but not with R2016a. How to fix it ?
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Marco Ronchi
Marco Ronchi 2016-9-26
Needs to fix also the Delta Sigma Toolbox ( R.Schreier /matlabcentral/fileexchange/19-delta-sigma-toolbox released in Jun 2016 for MATLAB 7 (R14)

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回答（1 个）

Mudambi Srivatsa
Mudambi Srivatsa 2016-9-28
I understand that you tried using "zpk" function in MATLAB R2016a and it doesn't seem to work. However, you were able to use it in MATLAB R14. As I was able to execute mtf1 = zpk(1,0,1,1) without any issue in MATLAB R2016a, I suspect the Control System Toolbox is not installed on your system.
You can use the following command to check the system paths for the installed "zpk" functions in MATLAB R2016a:
which -all zpk
If you do not see any install path, I suggest you verify toolbox installation in MATLAB R2016a. If it is installed correctly and you still have an issue using the function, I suggest you to contact MathWorks Technical Support with error details for further assistance.
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Marco Ronchi
Marco Ronchi 2016-9-28
I checked that zpk is present in my installation and I can execute the example [z,p,k] = zpk(hpFilt) provided in "doc zpk"

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