source: orange/docs/widgets/rst/visualize/polyviz.rst @ 11778:ecd4beec2099

Revision 11778:ecd4beec2099, 2.1 KB checked in by Ales Erjavec <ales.erjavec@…>, 5 months ago (diff)

Use new SVG icons in the widget documentation.

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1.. _Polyviz:
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3Polyviz
4=======
5
6.. image:: ../../../../Orange/OrangeWidgets/Visualize/icons/Polyviz.svg
7
8Polyviz visualization with explorative data analysis and intelligent data
9visualization enhancements.
10
11Signals
12-------
13
14Inputs:
15   - Examples (ExampleTable)
16      Input data set.
17   - Example Subset (ExampleTable)
18      A subset of data instances from Examples.
19   - Attribute Selection List
20      List of attributes to be shown in the visualization.
21
22
23Outputs:
24   - Selected Examples (ExampleTable)
25      A subset of examples that user has manually selected from the scatterplot.
26   - Unselected Examples (ExampleTable)
27      All other examples (examples not included in the user's selection).
28   - Attribute Selection List
29      List of attributes used in the visualization.
30
31
32Description
33-----------
34
35Polyviz is a visualization technique similar to :ref:`Radviz`, but with a
36twist: instead of a single fixed attribute anchors, data points are now
37attracted to anchors with value-dependent positions. Consider the snapshot
38below, which shows a visualization of Iris data set using three of its
39attributes. The widget can show anchor lines when the pointer is over one
40of the data instances; the one shown in the snapshot has high value of petal
41width, and close to average value for the other two attributes. Notice that
42anchors (lines stemming from the data point) start in the points that are on
43attribute lines according to the value of that attribute. Since in this
44particular visualization we are showing three different attributes, the data
45instances are placed within the triangle.
46
47.. image:: images/Polyviz-Iris.png
48
49Just like other point-based visualizations, Polyviz provides support for
50explorative data analysis and search for interesting visualizations. For
51further details on both, see the documentation on :ref:`Scatter Plot` widget.
52See the documentation on :ref:`Radviz` for details on various aspects
53controlled by the :obj:`Settings` tab. The utility of VizRank, an intelligent
54visualization technique, using brown-selected.tab data set is
55illustrated with a snapshot below.
56
57.. image:: images/Polyviz-VizRank.png
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