How to perform an inverse laplace transform?

Hello,

Is it possible to perform an inverse laplace transform on what is essential a matrix of data points.  There are 2 columns and 2048 rows.  The first column is a list of frequencies and the second column is a list of intensities.  If it is possible to perform an ILT on this data set how would i go about doing it?

Thank you so very much!!

Answer 1

[Youssef Khmou]

Mike,laplace function is working on symbolic variables, try to use ifft instead , as long as there is no alternative .

 >>Y=ifft(M((:,2)));     % the second column of frequency magnitudes .

[Mike Jaroszewicz]

Thank you for your response. does ifft abbreviate inverse fast fourier transform. So what i want to do is extract the rate of decay of a set of frequencies. i know that the ILT is the transform i need to do this.

Thanks.

[Youssef Khmou]

yes the Inverse DFT or FFT.

Try this submission : http://www.mathworks.com/matlabcentral/fileexchange/39035-numerical-inverse-laplace-transform