Volume Rate of Change (VROC)
Namespace: OpenQuant.API.Indicators
Assembly: OpenQuant.API (in OpenQuant.API.dll)
Syntax
Remarks
The Volume Rate-of-Change ("VROC") is calculated identically to the Price ROC , except it displays the ROC of the security's volume, rather than of its closing price.
Almost every significant chart formation (e.g., tops, bottoms, breakouts, etc) is accompanied by a sharp increase in volume. The Volume ROC shows the speed at which volume is changing.
Additional information on the interpretation of volume trends can be found in the discussions on the Volume Oscillator .
This indicator is described in more details in the Steve Achelis' book "Technical Analysis from A to Z".
Formula: 
Inheritance Hierarchy
Thread Safety
Public static (Shared in Visual Basic)staticShared members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.