It is not clear to me how the CWT function handles edge effects for a finite length time series. How to remove this edge effect in wavelets using the MATLAB toolbox and any procedure is there for it?
if you are using the matlab toolbox and the function cwt you can specify how the edges are handled by the input parameter Name-Value-Pair 'ExtendSignal'. The default extension should reflect your time series, i.e. use the elements at the boundary of your time series in reverse order.