Problem with 'Puncture' block

2012 5 6
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Good evening everyone,
I'm trying to simulate the 'Puncture' block in Simulin (Matlab R2010a), but also if I provided different sources I got always the same two errors:
1) Error in 'untitled/Puncture': Initialization commands cannot be evaluated. 2) Undefined function or method 'commblkselect' for input arguments of type 'double'.
Could you try or provide me a right configuration in order to understand where I'm wronging.
http://imageshack.us/photo/my-images/190/92863755.png/
Thanks in advance

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Juster
Juster 2012-5-7
I'd like to add the fact that I would use the 'Puncture' block in order to remove some elements from a signal,because I'd perform some mathematical operations on a few values of the input signal.
p.s If you know others block that performs this function, please suggest me.
Please answer.
Thank you
K E
K E 2012-5-15
If anyone else is curious: "The Puncture block creates an output vector by removing selected elements of the input vector and preserving other", see http://www.mathworks.com/help/toolbox/comm/ref/puncture.html

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Kaustubha Govind
Kaustubha Govind 2012-5-7

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I believe commblkselect should exist in $matlabroot/toolbox/commblks/commmasks - do you see a .m or .p file with that name in your MATLAB installation? If not, you may have a corrupt installation. Also, what do you get with:
>> which -all commblkselect

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Juster
Juster 2012-5-8
Hi,
I've that file in this dirctory, but when I write >> which -all commblkselect I receive the directory name followed by:
% Has no license available
Could be the problem?
Thanks in advance.
Kaustubha Govind
Kaustubha Govind 2012-5-8
Yes, the problem seems to be that you have the Communications Blockset installed, but do not have a valid license for it. I would recommend contacting MathWorks Installation/Licensing Support: http://www.mathworks.com/support/install.html

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Juster
Juster 2012-5-11

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Thank you Kaustubha.
Unfortunally I cannot use Puncture block but I solved the problem using 'find' function inside Matlab Workspace.
With Regards.

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