zeroCrossings(a)

Determines the points at which a function crosses the X axis: the zero crossings.

Syntax

o_zeroCrossings(a)

a: array 1D real OR Waveform

return: array Real - the estimated points where the array or waveform cross the X axis
    waveform input > output is in time units
    mapped array input > output is in mapped units
    unmapped array > output is in index units

Usage

The real roots of a function lie on the X axis and can be estimated by this function since it locates zero crossings.

Location

menu: veeos ==> Signal Processing ==> Zero Crossings

library: sigLib

Example

see veeos example

Notes

For maximum robustness the underlying algorithm uses a grid search and then linear interpolation to find the zero crossing. Either direction of crossing is found.

Reference

Dependencies

Supported On

VEE 7.0+, all platforms

See Also