pycrtools.core.hftools.mFilter

pycrtools.core.hftools.mFilter.hCrossCorrelationMatrix()

hCrossCorrelationMatrix(ccm, fftdata, nfreq)

Calculates the upper half of the cross-correlation matrix of a number of antenna data in the frequency domain and adds it to the output vector.

Parameters

ccm	Upper half of the cross-correlation matrix (output) containing complex visibilities as a function of frequency. The ordering is ant0*ant1,ant0*ant2,...,ant1*ant2,... - where each antN contains many frequency bins.
fftdata	Vector containing the FFTed data of all antennas subsequently.
nfreq	Number of frequency bins per antenna.

Description

The length of the ccm vector is N * (N - 1) / 2 * N_freq, where N is the number of antennas and N_freq the number of frequency bins per antenna. The length of the (input) vector is then N * N_freq.

Usage

hCrossCorrelationMatrix(ccm,fftdata,nfreq) -> ccm = ccm(old) + ccm(fftdata)

pycrtools.core.hftools.mFilter.hGetHanningFilter()

hGetHanningFilter(vec, Alpha, Beta, BetaRise, BetaFall)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

hGetHanningFilter(vec, Alpha, Beta)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hGetHanningFilter(vec, Alpha)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function

hGetHanningFilter(vec)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter

pycrtools.core.hftools.mFilter.hGetHanningFilter()

hGetHanningFilter(vec, Alpha, Beta, BetaRise, BetaFall)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

hGetHanningFilter(vec, Alpha, Beta)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hGetHanningFilter(vec, Alpha)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function

hGetHanningFilter(vec)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter

pycrtools.core.hftools.mFilter.hGetHanningFilter()

hGetHanningFilter(vec, Alpha, Beta, BetaRise, BetaFall)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

hGetHanningFilter(vec, Alpha, Beta)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hGetHanningFilter(vec, Alpha)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function

hGetHanningFilter(vec)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter

pycrtools.core.hftools.mFilter.hGetHanningFilter()

hGetHanningFilter(vec, Alpha, Beta, BetaRise, BetaFall)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

hGetHanningFilter(vec, Alpha, Beta)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hGetHanningFilter(vec, Alpha)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter
Alpha	Height parameter of Hanning function

hGetHanningFilter(vec)

Create a Hanning filter.

Parameters

vec	Return vector containing Hanning filter

pycrtools.core.hftools.mFilter.hGetHanningFilterHalf()

hGetHanningFilterHalf(vec, height, offset, falling)

Creates one half (i.e. rising or falling part) of a Hanning filter and add an offset

Parameters

vec	Return vector containing Hanning filter
height	Height of the Hanning function.
offset	Offset added to the Hanning function.
falling	Return first (False) or second half (True).

pycrtools.core.hftools.mFilter.hApplyFilter()

hApplyFilter(data, filter)

Apply a predefined filter on a vector.

Parameters

data	Vector containing the data on which the filter will be applied.
filter	Vector containing the filter.

pycrtools.core.hftools.mFilter.hApplyHanningFilter()

hApplyHanningFilter(data)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.

hApplyHanningFilter(data, Alpha)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta, BetaRise, BetaFall)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

pycrtools.core.hftools.mFilter.hApplyHanningFilter()

hApplyHanningFilter(data)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.

hApplyHanningFilter(data, Alpha)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta, BetaRise, BetaFall)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

pycrtools.core.hftools.mFilter.hApplyHanningFilter()

hApplyHanningFilter(data)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.

hApplyHanningFilter(data, Alpha)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta, BetaRise, BetaFall)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

pycrtools.core.hftools.mFilter.hApplyHanningFilter()

hApplyHanningFilter(data)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.

hApplyHanningFilter(data, Alpha)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function

hApplyHanningFilter(data, Alpha, Beta, BetaRise, BetaFall)

Apply a Hanning filter on a vector.

Parameters

data	Input and return vector containing the data on which the Hanning filter will be applied.
Alpha	Height parameter of Hanning function
Beta	Width parameter of Hanning function
BetaRise	Rising slope parameter of Hanning function
BetaFall	Falling slope parameter of Hanning function

pycrtools.core.hftools.mFilter.hApplyHammingFilter()

hApplyHammingFilter(vec)

Apply a Hamming filter on a vector.

Parameters

vec

Vector.

pycrtools.core.hftools.mFilter.hApplyHilbertTransformFC()

hApplyHilbertTransformFC(vec)

Apply a Hilbert transform on a vector of full complex data (e.g. N -> N FFT not N -> N / 2 + 1).

Parameters

vec

Vector.

pycrtools.core.hftools.mFilter.hApplyHilbertTransform()

hApplyHilbertTransform(vec)

Apply a Hilbert transform on a vector.

Parameters

vec

Vector.