Frequency domain

class cued_datalogger.analysis.frequency_domain.FrequencyDomainWidget(parent=None)

Bases: cued_datalogger.api.pyqtgraph_extensions.InteractivePlotWidget

The FrequencyDomainWidget is the main display widget for everything in the frequency domain.

Attributes

channels	(list of Channel) The currently selected channel objects
current_plot_type	(str) Any of ‘linear magnitude’, ‘log magnitude’, ‘phase’, ‘real part’, ‘imaginary part’, ‘nyquist’. The current type of plot that is displayed.
show_coherence	(bool) If True, coherence is also plotted on the axes.

Methods

calculate_spectrum()

Calculate the frequency spectrum of all the selected channels.

calculate_transfer_function(input_channel=None)

Calculate the transfer function, using the channel object given by input_channel as the input. If no channel specified, treat the first selected channel as input.

set_plot_type(plot_type)

Set what type of plot is displayed. plot_type can be any of ‘linear magnitude’, ‘log magnitude’, ‘phase’, ‘real part’, ‘imaginary part’, ‘nyquist’.

set_selected_channels(selected_channels)

Update which channels are plotted. Sets self.channels to selected_channels.

set_show_coherence(show_coherence)

Set whether the coherence is displayed.

update_plot(plot_transfer_function=False)

If plot_transfer_function, plot the transfer function. Otherwise, plot the spectrum.

class cued_datalogger.analysis.frequency_domain.FrequencyToolbox(parent=None)

Bases: cued_datalogger.api.toolbox.Toolbox

Toolbox containing the Frequency Domain controls.

Methods