Average directional index(ADX) is also called average directional movement index(ADMX).
This is an indicator for determining the strength of a prevailing trend.
ADX is measured on a scale from 0 to 100.
There are three lines in this indicator. One line represents the positive directional index and another line represents the negative directional index and the third one represents the strength of the trend.
This video shows you how to use this indicator for forex trading.
I like the idea of the CCI, Excellent clear expalination. If you could post more Information on Elliot wave then that would be great! Cheers