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events = toe_off (data, dataType, numstds, side)
TOE_OFF Pick toe off events from data.
TOE_OFF finds the toe off events in a set of gait data.
TOE_OFF (DATA, DATATYPE, NUMSTDS, SIDE) finds the toe off events in the
data given by DATA, which is of type DATATYPE. DATATYPE is a
string which is either 'motion', 'force', or 'switch'. When DATATYPE is
'motion', DATA is assumed to be a vector containing the
forward-backward motion of the toe. When DATATYPE is 'switch',
DATA is assumed to be a vector of footswitch data for the heel (similarly,
for 'force', force plate data is used, which is processed the same way as
'switch'). If DATATYPE is not given, it is assumed to be 'motion'. NUMSTDS
refers not to sexually transmitted diseases, but to the number of standard
deviations used in determining whether a point is a toe off if the
data is specified as either 'switch' or 'force'; it defaults to 5. SIDE
is specified as 'l' or 'r', and tells whether this is data for the right
or left side for V-Scope data (or for any other data where the coordinate
system flips from one side to the other. It defaults to 'l' (which should
be appropraite for data taken with other systems).
For 'motion' data, toe off is assumed to occur when the
velocity of the toe changes from backward to forward (passes
through 0, going up) (this is reversed if side is specified as 'r').
Cross-Reference InformationThis function calls
Produced by mat2html on Wed Jun 20 12:12:51 2001
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