Coppock Curve
The Coppock Curve is a long term indicator, and is calculated as the Exponential Moving Average (EMA), of the Rate of Change (ROC), of a Simple Moving Average (SMA) for the stock concerned. The period for these three can all be adjusted under 'edit'. Best set to periods: 10, 14 & 11 respectively.
Parameters: SMA, ROC & EMA.
For additional help on what the different parameters mean, that isn't included on this page, click here.
Coppock Curve

Here is an example of the Coppock Curve chart study (on a London Stock Exchange graph)
Reading the study:
This chart study is slightly unique whereby we get a buy signal when the Coppock Curve turns up from a trough. However this chart study is not used as much for sell signals.
Reading the study:

Here is an example of the Coppock Curve and the price line (of the London Stock Exchange), and what it may indicate