`mplsignal.scipyplot`#

The module contains utility functions to easily interact with SciPy.

The SciPy functions scipy.signal.freqs() and scipy.signal.freqz() have a plot argument to provide a plotting callback function. The functions provided in this module is aimed to be used as such a callback. The focus is to make a plot that can be used to see the results clearly and quickly. For publication quality plots, the functions in freq_plots are generally preferred.

mplsignal.scipyplot.freqz(w, h)#

Utility function to easily plot the result from scipy.signal.freqz().

The magnitude and phase responses are plotted in two different subplots.

Parameters:

warray-like: Frequency points.
harray-like: Transfer function evaluated at w.

Returns:

None.

See also

freqz_magnitude, freqz_phase, freqz_tristacked, freqz_twin

Examples

>>> from scipy import signal
... from mplsignal import scipyplot
...
... signal.freqz([1, 1, 1, 1], plot=scipyplot.freqz)

mplsignal.scipyplot.freqz_magnitude(w, h)#

Utility function to easily plot the result from scipy.signal.freqz().

Only the magnitude is plotted.

Parameters:

warray-like: Frequency points.
harray-like: Transfer function evaluated at w.

Returns:

None.

See also

freqz, freqz_phase, freqz_tristacked, freqz_twin

Examples

>>> from scipy import signal
... from mplsignal import scipyplot
...
... signal.freqz([1, 1, 1, 1], plot=scipyplot.freqz_magnitude)

mplsignal.scipyplot.freqz_phase(w, h)#

Utility function to easily plot the result from scipy.signal.freqz().

Only the phase is plotted.

Parameters:

warray-like: Frequency points.
harray-like: Transfer function evaluated at w.

Returns:

None.

See also

freqz, freqz_magnitude, freqz_tristacked, freqz_twin

Examples

>>> from scipy import signal
... from mplsignal import scipyplot
...
... signal.freqz([1, 1, 1, 1], plot=scipyplot.freqz_phase)

mplsignal.scipyplot.freqz_tristacked(w, h)#

Utility function to easily plot the result from scipy.signal.freqz().

The magnitude, phase, and group delay responses are plotted in three different subplots.

Parameters:

warray-like: Frequency points.
harray-like: Transfer function evaluated at w.

Returns:

None.

See also

freqz, freqz_magnitude, freqz_phase, freqz_twin

Examples

>>> from scipy import signal
... from mplsignal import scipyplot
...
... signal.freqz([1, 1, 1, 1], plot=scipyplot.freqz_tristacked)

mplsignal.scipyplot.freqz_twin(w, h)#

Utility function to easily plot the result from scipy.signal.freqz().

The magnitude and phase responses are plotted in the same plot using different y-axes.

Parameters:

warray-like: Frequency points.
harray-like: Transfer function evaluated at w.

Returns:

None.

See also

freqz, freqz_magnitude, freqz_phase, freqz_tristacked

Examples

>>> from scipy import signal
... from mplsignal import scipyplot
...
... signal.freqz([1, 1, 1, 1], plot=scipyplot.freqz_twin)

mplsignal.scipyplot#

`mplsignal.scipyplot`#