Yeah that is backwards. Trade volume is the denominator. Ratio = TX volume / Trade volume. Here I quote from the article:
If you look at line 31 of the python code that calculates the ratio (see the github link above, this was taken from the codinginmysleep article), it confirm that he is indeed dividing tx volume by the trade volume.
Ooh, that is an awesome math error. So commenter Steve got his ratio backwards and we are actually talking about Tx volume:Trade Volume rather than vice versa.
I will edit my OP so as not to mislead the Zaihs among us