bid ask net delta

[vienna]

Good Morning Forum !

the following efs calculating all trades done at bid and ask.


My question is following for this tool, i only want to see the net delta, that means it should show only an up green line if there are net more trades done at the ask or the opposite if there are more net trades done on the bid it should go below a zero line red.

its like market delta do it at the following chart:

http://farm5.static.flickr.com/4019/4351351637_eacee07847_o.png

thanks for help

vienna