Approximates integrals of functions which are sampled over a logarithmic space.
The integration is accurate where the function Y is smooth (piece-wise linear) on a logarithmic scale. For such functions the integral may be evaluated accurately, using fewer samples in comparison to linear sampling. A natural application is integration of transfer functions, for which the frequency samples are usually logarithmically spaced.
X - vector of samples.
Y - corresponding function values. If Y is a matrix, each of its columns is integrated with respect to X.
int - integration result.
Written by Dr. Yoash Levron, Dec. 2015
yoash levron (2021). Integration over log space (https://www.mathworks.com/matlabcentral/fileexchange/54650-integration-over-log-space), MATLAB Central File Exchange. Retrieved .
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