title: Detecting seasonalities
body: <p>I need to find some software to detect seasonalities in time-series. I have detected bi-weekly seasonality, using MAPLE, but it's only graphics without any numbers<a href="https://i.stack.imgur.com/x0jEs.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/x0jEs.jpg" alt="The way MAPLE shows seasonality for a 1 year time-series"></a></p>
  
  <p>I need something not only to show main seasonalities, but also to find one that can detect some sub-seasonalities and (it would be really-really awesome) calculate seasonal indexes. Or, maybe, some other way to do it, using MAPLE? I've already tried to find some software, but the main problem was, that it can calculate seasonality only if i give it a period. And I need something to find that period.</p>