nibcq.enums.InterpolationMode

class nibcq.enums.InterpolationMode

Bases: str, enum.Enum

Interpolation modes for compensation value lookups in frequency domain.

Defines how compensation values are calculated when the measurement frequency doesn’t exactly match a frequency in the compensation table. Different modes provide different trade-offs between accuracy and computational simplicity.

Values:
NEAREST (“nearest”): Nearest neighbor interpolation

  • Uses the compensation value from the closest frequency point

  • Fast and simple, but may introduce step discontinuities

LOWER (“lower”): Lower bound interpolation

  • Always uses compensation value from the next lower frequency

  • Conservative approach, ensures no extrapolation above known points

UPPER (“upper”): Upper bound interpolation

  • Always uses compensation value from the next higher frequency

  • Conservative approach, ensures no extrapolation below known points

LINEAR (“linear”): Linear interpolation

  • Calculates compensation value using linear interpolation between neighboring frequency points

  • Most accurate for smooth frequency responses

Examples

>>> compensation = Compensation.from_file(CompensationMethod.SHORT, "short.json")
>>> impedance = compensation.get_compensated_impedance(
...     frequency=1500.0,
...     measured_impedance=complex(0.1, 0.05),
...     interpolation_mode=InterpolationMode.LINEAR
... )