How would it be possible to set the length of the input signal for Matlab function block?

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sahand 2012-11-13

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采纳的回答： Kaustubha Govind

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Hi,

I have used a step block (in simulink) as the input provider for a (embedded) matlab function block.

Inside the editor of the matlab function block, there is a condition which make following trouble,

every time I run the simulink model, an error message occur which say that:

" number of rows of the input signal (step function) is not equal to 50 "

-it should be noted, I am aware that it is a user defined error-

but my problem is,

 I don't know how to adapt the length of input signal (step block) to the specified number (50).

Sincerely Yours,

Sahand Radmanesh

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Answer 1

Kaustubha Govind 2012-11-13

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https://ww2.mathworks.cn/matlabcentral/answers/53568-how-would-it-be-possible-to-set-the-length-of-the-input-signal-for-matlab-function-block#answer_65212

Set the Initial Value of the Step block to zeros(1,50) and its Final Value to ones(1,50) to have it produce a signal of length 50.

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sahand 2012-11-14

Thanks,

With your proposed approach the number of columns (second dimension) changed, But again whether I use zeros(1,50) or zeros(50,1), only the second dimension changes and exported variable to Workspace says that the output is a variable with following specification:

52*50 double

and the number of rows always keeps the same value: 52

What could be done for first dimension to be changed?