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Re: Inverse Laplace transform?

From: Doug Stewart
Subject: Re: Inverse Laplace transform?
Date: Sun, 10 Dec 2006 14:31:03 -0500
User-agent: Thunderbird (Windows/20061025)

Joe Koski wrote:
on 12/10/06 10:36 AM, Doug Stewart at address@hidden wrote:

Is there an inverse Laplace transform function in Octave?
Doug Stewart


Check ifft at, or help ifft
at the octave prompt.


Thanks Joe
I did look there and there is nothing for Inverse Laplace transform that I can see.

I have written up a crude version that is not ready for prime time yet. I thought I would ask before I spent the time to reinvent the wheel :-)

What I have is a function ( for the controls tool box) that takes in a sys type transfer function. It then uses the residue function to do the partial fraction expansion.From this I form up a string that is the time representation of each factor. What I am having a little difficulty with is how to get the string formatted nicely.

I have a cell array with each location holding a string that is the time representation of a term. What I want to do is take these and form them into one long string that has all the "+"'s and "-"'s between each term properly formated.

So any help would be appreciated.

resultstring = cell(1,1)  "+" cell(2,1) "-" cell(3,1)

is what I can't seem to do?

Thanks in advance for any help.

Doug Stewart

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