four 4,006 posts msg #112678  Ignore four modified 
4/6/2013 9:12:20 PM
Perhaps some help from Yepher's manual... http://yepher.com/stockfetcher/command.html
Command:
Volume
Type: Indicator
Parameters: [PERIOD]
Usage: • volume
• average volume(PERIOD)
Components: market strength indicator
volume
Example:
• Volume has been increasing for 3 days
• average volume(90) is above 100000
Description:
Number of shares traded for the a given stocks on a particular day.

Command:
Volume Rate of Change (VROC)
Type: Indicator
Parameters: [Period]
Usage: • volume rate of change
• Volume ROC(PERIOD)
• VROC(PERIOD)
Components: market strength indicator
volume
Example:
• Show stocks where the volume ROC has been increasing for 4 days
• Show stocks where the volume rate of change has reached a new 1 year high
Description:
The Volume RateofChange ("ROC") is calculated identically to the
Price ROC, except it displays the ROC of the security's volume,
rather than of its closing price.
Interpretation
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 Volume and on the Volume Oscillator.
Formula:
The Volume RateOfChange indicator is calculated by dividing the
amount that volume has changed over the last nperiods by the volume
nperiods ago. The result is the percentage that the volume has
changed in the last nperiods.
If the volume is higher today than nperiods ago, the ROC will
be a positive number. If the volume is lower today than nperiods
ago, the ROC will be a negative number.
VROC = [(Today's Volume  (Today  n periods Volume))/(Today  n periods Volume)] * 100

Command:
Volume Weighted MACD (VWMACD)
Type: Indicator
Parameters: [MA Period 1, MA Period 2, EMA Period]
Usage: • VWMACD {fast, slow} Line(PERIOD1, PERIOD2, PERIOD3)
• VWMACD histogram(PERIOD1, PERIOD2, PERIOD3)
Components: market strength indicator
volume
price
close
Developed by: Gerald Appel 
Example:
• VWMACD Fast Line(12,26,9) crossed above the VWMACD Slow Line(12,26,9)
• VWMACD Histogram(12,26,9) has been increasing for 15 days
• VWMACD Slow line(12,26,9) crossed above 0 within the last 1 day
Description:
The volume weighted MACD is computed in the exact same fashion
as the standard MACD (Moving average convergence/divergence)
except the Volume Weighted MACD uses volume weighted moving
averages as opposed to exponential moving averages.
To generate the signal (or fast line), the difference is
computed between the fast and slow moving average. The slow
line is then computed by taking an nday exponential moving
average of the raw signal. Finally, the VWMACD Histogram is
the difference between the fast and slow lines.

Command:
Volume Weighted Moving Average(simple)
Type: Indicator
Parameters: [period]
Usage: • volume weighted moving average(PERIOD)
• VMA(days)
Components: market strength indicator
volume
price
close
Example:
• VMA(50) is more than 5 percent below the MA(50)
• VMA(50) has been increasing for 5 days
• VMA(20) crossed above the MA(20) within the last 1 day
Description:
The simple volume weighted moving average takes a standard
moving average and uses the daily volume as a weighting
mechanism. The end effect is a moving average that responds to
spikes or lulls in trading activity.
