biopsykit.protocols.plotting module

Module providing some standard plots for visualizing data collected during a psychological protocol.

biopsykit.protocols.plotting.hr_ensemble_plot(data, subphases=None, **kwargs)[source]

Draw a heart rate ensemble plot.

This function plots time-series heart rate continuously as ensemble plot (mean ± standard error). If the data consist of multiple phases, data from each phase are overlaid in the same plot. If each phase additionally consists of subphases, the single subphases are highlighted in the plot.

The input data is expected to be a MergedStudyDataDict, i.e., a dictionary with merged time-series heart rate data, of multiple subjects, split into individual phases. Per phase, the data of each subjects have same length and are combined into one common dataframe.

Parameters

  • data (MergedStudyDataDict) – dict with heart rate data to plot

  • subphases (dict, optional) – dictionary with phases (keys) and subphases (values - dict with subphase names and subphase durations) or None if no subphases are present. Default: None

  • **kwargs (dict, optional) –

    optional arguments for plot configuration.

    To style general plot appearance:

    • ax: pre-existing axes for the plot. Otherwise, a new figure and axes object is created and returned.

    • palette: color palette to plot data from different phases

    • ensemble_alpha: transparency value for ensemble plot errorband (around mean). Default: 0.3

    • background_alpha: transparency value for background spans (if subphases are present). Default: 0.2

    • linestyle: list of line styles for ensemble plots. Must match the number of phases to plot

    • phase_text: string pattern to customize phase name shown in legend with placeholder for subphase name. Default: “{}”

    To style axes:

    • is_relative: boolean indicating whether heart rate data is relative (in % relative to baseline) or absolute (in bpm). Default: True

    • xlabel: label of x axis. Default: “\(Time [s]\)”

    • xaxis_minor_tick_locator: locator object to style x axis minor ticks. Default: 60 sec

    • ylabel: label of y axis. Default: “\(\Delta HR [\%]\)”

    • ylims: y axis limits. Default: None to automatically infer limits

    To style the annotations at the end of each phase:

    • end_phase_text: string pattern to customize text at the end of phase with placeholder for phase name. Default: “{}”

    • end_phase_line_color: line color of vertical lines used to indicate end of phase. Default: “#e0e0e0”

    • end_phase_line_width: line width of vertical lines used to indicate end of phase. Default: 2.0

    To style legend:

    • legend_loc: location of legend. Default: “lower right”

    • legend_bbox_to_anchor: box that is used to position the legend in conjunction with legend_loc

Returns

  • fig (Figure) – figure object

  • ax (Axes) – axes object

Return type

Optional[Tuple[matplotlib.figure.Figure, matplotlib.axes._axes.Axes]]

See also

MergedStudyDataDict

dictionary format

merge_study_data_dict()

function to build MergedStudyDataDict

Examples

>>> from biopsykit.protocols.plotting import hr_ensemble_plot
>>> # Example with subphases
>>> subphase_dict = {
>>>     "Phase1": {"Baseline": 60, "Stress": 120, "Recovery": 60},
>>>     "Phase2": {"Baseline": 60, "Stress": 120, "Recovery": 60},
>>>     "Phase3": {"Baseline": 60, "Stress": 120, "Recovery": 60}
>>> }
>>> fig, ax = hr_ensemble_plot(data=data, subphases=subphase_dict)
biopsykit.protocols.plotting.hr_mean_plot(data, **kwargs)[source]

Plot course of heart rate as mean ± standard error over phases (and subphases) of a psychological protocol.

The correct plot is automatically inferred from the provided data:

  • only phase index level: plot phases over x axis

  • phase and subphase index levels: plot subphases over x axis, highlight phases as vertical spans

  • additionally: condition level: plot data of different conditions individually (corresponds to hue parameter in lineplot())

Parameters

  • data (MeanSeDataFrame) – Heart rate data to plot. Must be provided as MeanSeDataFrame with columns mean and se computed over phases (and, if available, subphases)

  • **kwargs –

    additional parameters to be passed to the plot, such as:

    • ax: pre-existing axes for the plot. Otherwise, a new figure and axes object is created and returned.

    • figsize: tuple specifying figure dimensions

    • palette: color palette to plot data from different conditions. If palette is a str then it is assumed to be the name of a fau_colors palette (fau_colors.cmaps._fields).

    • is_relative: boolean indicating whether heart rate data is relative (in % relative to baseline) or absolute (in bpm). Default: False

    • order: list specifying the order of categorical values (i.e., conditions) along the x axis.

    • x_offset: offset value to move different groups along the x axis for better visualization. Default: 0.05

    • xlabel: label of x axis. Default: “Subphases” (if subphases are present) or “Phases” (if only phases are present).

    • ylabel: label of y axis. Default: “\(\Delta HR [%]\)”

    • ylims: list to manually specify y axis limits, float to specify y axis margin (see margins() for further information), or None to automatically infer y axis limits.

    • marker: string or list of strings to specify marker style. If marker is a string, then marker of each line will have the same style. If marker is a list, then marker of each line will have a different style.

    • linestyle: string or list of strings to specify line style. If linestyle is a string, then each line will have the same style. If linestyle is a list, then each line will have a different style.

Returns

  • fig (Figure) – figure object

  • ax (Axes) – axes object

Return type

Tuple[matplotlib.figure.Figure, matplotlib.axes._axes.Axes]

See also

lineplot()

Plot data as lineplot with mean and standard error

biopsykit.protocols.plotting.saliva_plot(data, saliva_type=None, sample_times=None, test_times=None, sample_times_absolute=False, remove_s0=False, **kwargs)[source]

Plot saliva data during psychological protocol as mean ± standard error.

The function accepts raw saliva data per subject (SalivaRawDataFrame) as well as pre-computed mean and standard error values of saliva samples ( SalivaMeanSeDataFrame). To combine data from multiple saliva types (maximum: 2) into one plot a dict can be passed to data.

If a psychological test (e.g., TSST, MIST, or Stroop) was performed, the test time is highlighted as vertical span within the plot.

Note

If no sample times are provided (neither via time column in data nor via sample_times parameter) then samples will be used as x axis

Parameters

  • data (SalivaRawDataFrame, ) – SalivaMeanSeDataFrame, or dict of such Saliva data to plot. Must either be provided as SalivaRawDataFrame with raw saliva data per subject or as SalivaMeanSeDataFrame with columns mean and se computed per saliva sample. To plot data from multiple saliva types (maximum: 2) a dict can be passed (keys: saliva types, values: saliva data).

  • saliva_type ({"cortisol", "amylase", "il6"}, optional) – saliva type to be plotted. If a dict is passed and saliva_type is None the saliva types are inferred from dict keys.

  • sample_times (list or dict of lists) – sample times in minutes relative to psychological test or a dict of such if sample times are different for the individual saliva types.

  • test_times (list of int, optional) – start and end times of psychological test (in minutes) or None if no test was performed

  • sample_times_absolute (bool, optional) – True if absolute sample times were provided (i.e., the duration of the psychological test was already added to the sample times), False if relative sample times were provided and absolute times should be computed based on test times specified by test_times. Default: False

  • remove_s0 (bool, optional) – whether to remove the first saliva sample for plotting or not. Default: False

  • **kwargs –

    additional parameters to be passed to the plot.

    To style general plot appearance:

    • ax: pre-existing axes for the plot. Otherwise, a new figure and axes object is created and returned.

    • palette: color palette to plot data from different phases

    • figsize: tuple specifying figure dimensions

    • marker: string or list of strings to specify marker style. If marker is a string, then the markers of each line will have the same style. If marker is a list, then the markers of each line will have a different style.

    • linestyle: string or list of strings to specify line style. If linestyle is a string, then each line will have the same style. If linestyle is a list, then each line will have a different style.

    To style axes:

    • x_offset: offset value to move different groups along the x axis for better visualization. Default: 0.05

    • xlabel: label of x axis. Default: “Subphases” (if subphases are present). or “Phases” (if only phases are present)

    • ylabel: label of y axis. Default: “\(\Delta HR [%]\)”

    • ylims: list to manually specify y axis limits, float to specify y axis margin (see margins() for further information), or None to automatically infer y axis limits.

    To style the vertical span highlighting the psychological test in the plot:

    • test_title: title of test

    • test_fontsize: fontsize of the test title. Default: “medium”

    • test_color: color of vspan. Default: #9e9e9e

    • test_alpha: transparency value of vspan: Default: 0.5

Returns

  • fig (Figure) – figure object

  • ax (Axes) – axes object

Return type

Optional[Tuple[matplotlib.figure.Figure, matplotlib.axes._axes.Axes]]

See also

lineplot()

Plot data as lineplot with mean and standard error

biopsykit.protocols.plotting.saliva_plot_combine_legend(fig, ax, saliva_types, **kwargs)[source]

Combine multiple legends of saliva_plot into one joint legend outside of plot.

If data from multiple saliva types are combined into one plot (e.g., by calling saliva_plot() on the same plot twice) then two separate legend are created. This function can be used to combine the two legends into one.

Parameters

  • fig (Figure) – figure object

  • ax (Axes) – axes object

  • saliva_types (list) – list of saliva types in plot

  • **kwargs –

    additional arguments to customize plot, such as:

    • legend_loc: Location of legend. Default: upper center

    • legend_size: Legend size. Default: small

    • rect: Rectangle in normalized figure coordinates into which the whole subplots area (including labels) will fit. Used to conveniently place legend outside of figure.

biopsykit.protocols.plotting.saliva_feature_boxplot(data, x, saliva_type, hue=None, feature=None, stats_kwargs=None, **kwargs)[source]

Draw a boxplot with significance brackets, specifically designed for saliva features.

This is a wrapper of feature_boxplot() that can be used to plot saliva features and allows to easily add significance brackets that indicate statistical significance.

Note

The input data is assumed to be in long-format.

Parameters

  • data (SalivaFeatureDataFrame) – data to plot

  • x (str) – column of x axis in data

  • saliva_type (str) – type of saliva data to plot

  • hue (str, optional) – column name of grouping variable. Default: None

  • feature (str, optional) – name of feature to plot or None

  • stats_kwargs (dict, optional) – dictionary with arguments for significance brackets

  • **kwargs – additional arguments that are passed to feature_boxplot() and boxplot()

Returns

  • fig (Figure) – figure object

  • ax (Axes) – axes object

Return type

Tuple[matplotlib.figure.Figure, matplotlib.axes._axes.Axes]

See also

feature_boxplot()

plot features as boxplot

StatsPipeline

class to create statistical analysis pipelines and get parameter for plotting significance brackets

biopsykit.protocols.plotting.saliva_multi_feature_boxplot(data, saliva_type, features, hue=None, stats_kwargs=None, **kwargs)[source]

Draw multiple features as boxplots with significance brackets, specifically designed for saliva features.

This is a wrapper of multi_feature_boxplot() that can be used to plot saliva features and allows to easily add significance brackets that indicate statistical significance.

Note

The input data is assumed to be in long-format.

Parameters

  • data (SalivaFeatureDataFrame) – data to plot

  • saliva_type (str) – type of saliva data to plot

  • hue (str, optional) – column name of grouping variable. Default: None

  • features (list of str or dict of str) – features to plot. If features is a list, each entry must correspond to one feature category in the index level specified by group. A separate subplot will be created for each feature. If similar features (i.e., different slope or AUC parameters) should be combined into one subplot, features can be provided as dictionary. Then, the dict keys specify the feature category (a separate subplot will be created for each category) and the dict values specify the feature (or list of features) that are combined into the subplots.

  • stats_kwargs (dict, optional) – nested dictionary with arguments for significance brackets. See feature_boxplot() for further information

Returns

Return type

Tuple[matplotlib.figure.Figure, Iterable[matplotlib.axes._axes.Axes]]

See also

multi_feature_boxplot()

plot multiple features as boxplots

StatsPipeline

class to create statistical analysis pipelines and get parameter for plotting significance brackets

biopsykit.protocols.mist module biopsykit.protocols.tsst module