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Asked by john on 10 Jul 2013

Hi,

how can I plot result of inverse Laplace transformation?

Example:

b=(s^2-2*s+4); c=ilaplace(b) t=0:10;

Than I get:

c = 4*dirac(t) - 2*dirac(t, 1) + dirac(t, 2)

but how can I plot result of ilaplace for t=0:10?

I know about

ezplot(matlabFunction(h), [1,1000])

but it doesn't work.

Thank you for help

No ideas?

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Answer by Vipin Sharma on 3 Sep 2014

Inverse laplace transform plot of a transfer function, F, is equal to impulse response of the transfer function, F. You could simply do, impulseplot(F). Note that F is 'tf' type and 'sym' type.

## 3 Comments

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/81693#comment_160490

Can anybody help me? please

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/81693#comment_160636

Hey..

When you say you want to plot the inverse laplace transform don't you actually mean the impulse response of the system? Because then you might as well plot the impulse response using impulseplot function. But then you also need to define the system. Just asking because I am working on a similar topic.

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/81693#comment_160882

Hi, I want just plot my above example for any time interval...I hope it is answer for your question. :-). But I dont know how.