Time frequency distribution of a signal using S-transform (stockwell transform)

This function gives the time-frequency distribution using S-transform in matlab

This function gives the time-frequency distribution using S-transform in matlab. Credits to :
[1] Stockwell, R.G., "Localization of the complex spectrum: the S transform", IEEE Transactions on Signal Processing, Volume 44, Issue 4, Pg. 998 - 1001, doi : 10.1109/78.492555
This function is useful for implementation of papers such as :
[2] M.K. Das, S, Ari, "Analysis of ECG signal denoising method based on S-transform", Elsevier IRBM, Volume 34, Issue 6, Pg. 362-270, 2013, doi :doi:10.1016/j.irbm.2013.07.012