Attached is the amazing mq4 VSA Volume Spread Analysis suite which is based on the work and theories of Wyckoff from the 1920 and extended by tom williams.
It would be great to see these indicators ported over to lua format.
For those who are interested in understanding what volume really means and VSA in general, then you can download the manual for these indicators from
here (the pdf was too large to post here..) http://www.forexfactory.com/attachment. ... 1243445314
If you like the idea of converting this VSA suite to lua then please comment with your support for the idea... This is obviously a big job so the developers need to know that there is more than one person interested in such an indicator.