gemseo.post.dataset.radviz module#
Draw a radar visualization from a Dataset
.
The Radar
class implements the Radviz plot,
which is a way to visualize \(n\) samples of a multi-dimensional vector
in a 2D referential and to highlight the separability of the data.
For that, each sample
is rendered inside the unit disc with the influences of the different parameters evenly distributed on its circumference. Each parameter influence varies from 0 to 1 and can be interpreted compared to the others.
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.
- class Radar(dataset, classifier)[source]#
Bases:
DatasetPlot
Radar visualization.
- Parameters:
- Raises:
ValueError -- If the dataset is empty.