math (pmrf.math)

Core maths functions.

Modules

aggregations	Aggregations of arrays (vectors, tensors) into lower dimensions.
losses	Common loss functions for optimization.

Functions

complex_2_magnitude(z)	Return the magnitude of the complex argument.
complex_2_db(z)	Return the magnitude in dB of a complex number (as \(20\log_{10}(|z|)\)).
complex_2_db10(z)	Return the magnitude in dB of a complex number (as \(10\log_{10}(|z|)\)).
complex_2_radian(z)	Return the angle complex argument in radian.
complex_2_degree(z)	Returns the angle complex argument in degrees.
complex_2_quadrature(z)	Take a complex number and returns quadrature, which is (length, arc-length from real axis).
complex_2_reim(z)	Return real and imaginary parts of a complex number.
complex_components(z)	Break up a complex array into all possible scalar components.
magnitude_2_db(z[, zero_nan])	Convert linear magnitude to dB.
mag_2_db(z[, zero_nan])	Convert linear magnitude to dB.
mag_2_db10(z[, zero_nan])	Convert linear magnitude to dB (factor 10).
db_2_magnitude(z)	Convert dB to linear magnitude.
db_2_mag(z)	Convert dB to linear magnitude.
db10_2_mag(z)	Convert dB (factor 10) to linear magnitude.
magdeg_2_reim(mag, deg)	Convert linear magnitude and phase (in deg) arrays into a complex array.
dbdeg_2_reim(db, deg)	Convert dB magnitude and phase (in deg) arrays into a complex array.
db_2_np(db)	Convert a value in decibel (dB) to neper (Np).
np_2_db(x)	Convert a value in Nepers (Np) to decibel (dB).
radian_2_degree(rad)	Convert angles from radians to degrees.
degree_2_radian(deg)	Convert angles from degrees to radians.
feet_2_meter([feet])	Convert length in feet to meter.
meter_2_feet([meter])	Convert length in meter to feet.
db_per_100feet_2_db_per_100meter([...])	Convert attenuation values given in dB/100ft to dB/100m.
polar_2_rect(radii, angles[, deg])	Convert polar coordinates to rectangular (complex) coordinates.
rect_2_polar(x[, deg])	Convert rectangular (complex) coordinates to polar coordinates.
sqrt_phase_unwrap(z)	Take the square root of a complex number with unwrapped phase.
complexify(f[, name])	Make a function f(scalar) into f(complex).