localExtrema

Parameters

Parameter label	I/O type	Data type	Mandatory parameter?	Default value
inputVec	input	vector	yes	N/A
mode	input	string ("min" / "min-eq" / "max" / "max-eq")	no	"max"
outputVec	output	vector	N/A	N/A

Functionality

The module can process numerical input vectors and detects local extrema points. The module returns a boolean value True in outputVec at all indices that correspond to a local extrema in inputVec. The type of extrema is either maxima (mode="max"/mode="max-eq") or minima(mode="min"/mode="min-eq"). If one of the two modes mode="max-eq" or mode="min-eq" is selected, local plateaus are also detected as maximum.

Here are some examples for all modes:

inputVec = [1,1,2,3,4,3,0,1,0]
mode = "max"
...
outputVec = [False,False,False,False,True,False,False,True,False]

inputVec = [1,1,2,3,4,3,0,1,0]
mode = "max-eq"
...
outputVec = [True,False,False,False,True,False,False,True,False]

inputVec = [10,8,1,5,2,2,5]
mode = "min"
...
outputVec = [False,False,True,False,False,False,False]

inputVec = [10,8,1,5,2,2,5]
mode = "min-eq"
...
outputVec = [False,False,True,False,True,True,False]