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timediff

PURPOSE

TIMEDIFF Compute the derivative of a signal

SYNOPSIS

function DATA=timediff(DATA, ax_type)

DESCRIPTION

 TIMEDIFF Compute the derivative of a signal
   DIFF = TIMEDIFF(DATA[, AX_TYPE]) computes the derivative of the
   signal DATA according to the linear approximation (AX_TYPE=='ORD1',
   default) or to the cubic approximation (AX_TYPE=='ORD3a').

CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

eta ETA Computes the eta value of a signal.
leta LETA Compute the eta values of long data signals.
sfa1_step SFA1_STEP a step in the SFA1 algorithm.
sfa2_step SFA2_STEP a step in the SFA2 algorithm.