gemseo / post / dataset

parallel_coordinates module

Draw parallel coordinates from a Dataset.

The ParallelCoordinates class implements the parallel coordinates plot, a.k.a. cowebplot, which is a way to visualize \(n\) samples of a high-dimensional vector

\[x=(x_1,x_2,\ldots,x_d)\in\mathbb{R}^d\]

in a 2D referential by representing each sample

\[x^{(i)}=(x_1^{(i)},x_2^{(i)},\ldots,x_d^{(i)})\]

as a piece-wise line where the x-values of the nodes from left to right are the values of \(x_1\), \(x_2\), … and \(x_d^{(i)}\).

A variable name is required by the DatasetPlot.execute() method by means of the classifier keyword in order to color the curves according to the value of the variable name. This is useful when the data is labeled or when we are looking for the samples for which the classifier value is comprised in some interval specified by the lower and upper arguments (default values are set to -inf and inf respectively). In the latter case, the color scale is composed of only two values: one for the samples positively classified and one for the others.

Classes:

ParallelCoordinates(dataset)

Parallel coordinates.

class gemseo.post.dataset.parallel_coordinates.ParallelCoordinates(dataset)[source]

Bases: gemseo.post.dataset.dataset_plot.DatasetPlot

Parallel coordinates.

dataset

The dataset to be plotted.

Type

Dataset

Initialize self. See help(type(self)) for accurate signature.

Parameters

dataset (Dataset) – The dataset containing the data to plot.

Raises

ValueError – If the dataset is empty.

Return type

None

Attributes:

COLOR

COLORMAP

FIGSIZE_X

FIGSIZE_Y

LINESTYLE

color

The color of the series.

colormap

The color map.

figsize

The figure size.

figsize_x

The x-component of figure size.

figsize_y

The y-component of figure size.

font_size

The font size.

legend_location

The location of the legend.

linestyle

The line style of the series.

output_files

The paths to the output files.

rmax

The maximum value on the r-axis.

rmin

The minimum value on the r-axis.

title

The title of the plot.

xlabel

The label for the x-axis.

xmax

The maximum value on the x-axis.

xmin

The minimum value on the x-axis.

ylabel

The label for the y-axis.

ymax

The maximum value on the y-axis.

ymin

The minimum value on the y-axis.

zlabel

The label for the z-axis.

zmax

The maximum value on the z-axis.

zmin

The minimum value on the z-axis.

Methods:

execute([save, show, file_path, ...])

Execute the post processing.

COLOR = 'color'
COLORMAP = 'colormap'
FIGSIZE_X = 'figsize_x'
FIGSIZE_Y = 'figsize_y'
LINESTYLE = 'linestyle'
property color

The color of the series.

property colormap

The color map.

execute(save=True, show=False, file_path=None, directory_path=None, file_name=None, file_format=None, properties=None, **plot_options)

Execute the post processing.

Parameters
  • save (bool) –

    If True, save the plot.

    By default it is set to True.

  • show (bool) –

    If True, display the plot.

    By default it is set to False.

  • file_path (Optional[Union[str, pathlib.Path]]) –

    The path of the file to save the figures. If None, create a file path from directory_path, file_name and file_format.

    By default it is set to None.

  • directory_path (Optional[Union[str, pathlib.Path]]) –

    The path of the directory to save the figures. If None, use the current working directory.

    By default it is set to None.

  • file_name (Optional[str]) –

    The name of the file to save the figures. If None, use a default one generated by the post-processing.

    By default it is set to None.

  • file_format (Optional[str]) –

    A file format, e.g. ‘png’, ‘pdf’, ‘svg’, … If None, use a default file extension.

    By default it is set to None.

  • properties (Optional[Mapping[str, Union[str, int, float, Sequence[Union[str, int, float]]]]]) –

    The general properties of a DatasetPlot.

    By default it is set to None.

  • **plot_options (Union[str, int, float, bool, Sequence[str]]) – The options of the current class inheriting from DatasetPlot.

Returns

The figures.

Return type

List[matplotlib.figure.Figure]

property figsize

The figure size.

property figsize_x

The x-component of figure size.

property figsize_y

The y-component of figure size.

property font_size

The font size.

property legend_location

The location of the legend.

property linestyle

The line style of the series.

property output_files

The paths to the output files.

property rmax

The maximum value on the r-axis.

property rmin

The minimum value on the r-axis.

property title

The title of the plot.

property xlabel

The label for the x-axis.

property xmax

The maximum value on the x-axis.

property xmin

The minimum value on the x-axis.

property ylabel

The label for the y-axis.

property ymax

The maximum value on the y-axis.

property ymin

The minimum value on the y-axis.

property zlabel

The label for the z-axis.

property zmax

The maximum value on the z-axis.

property zmin

The minimum value on the z-axis.