Arms' Ease of Movement Value
Arms' Ease of Movement Value (EMV) emphasizes days where the security moves easily and minimizes days where the security does not move easily. Developed by Richard W. Arms, Jr.
Object that is coercible to xts or matrix and contains High-Low prices.
Vector or matrix of volume observations
corresponding to the
Number of periods for moving average.
A function or a string naming the function to be called.
An increment to make the results larger and easier to work with.
Other arguments to be passed to the
The EMV is calculated by dividing the midpoint ([high + low]/2) move by the 'Box Ratio' (volume divided by the high minus low).
A object of the same class as
or a matrix (if
try.xts fails) containing the
The ease of movement values.
The smoothed (as specified by
ma) ease of movement values.
A buy/sell signal is generated when the EMV crosses above/below zero. When the EMV hovers around zero, there are small price movements and/or high volume, and the price is not moving easily.
The following site(s) were used to code/document this
SMA, etc. for moving
average options; and note Warning section.