source: orange/docs/widgets/rst/data/concatenate.rst @ 11050:e3c4699ca155

Revision 11050:e3c4699ca155, 1.1 KB checked in by Miha Stajdohar <miha.stajdohar@…>, 16 months ago (diff)

Widget docs From HTML to Sphinx.

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1.. _Concatenate:
2
3Concatenate
4===========
5
6.. image:: ../icons/Concatenate.png
7
8Concatenates data from multiple sources.
9
10Signals
11-------
12
13Inputs:
14   - Primary Table (ExampleTable)
15      A data set that defines the attribute set and gives the examples
16   - Additional Tables (ExampleTable)
17      Additional tables of examples
18
19Outputs:
20   - Examples (ExampleTable)
21
22
23Description
24-----------
25
26The widget concatenates multiple sets of examples. The merge is "vertical", in
27a sense that two sets of 10 and 5 examples yield a new set of 15 examples.
28
29.. image:: images/Concatenate.png
30
31In case one of the tables is connected to the widget as the primary table, the
32resulting table will contain these same attributes. If there is no primary table,
33the attributes can be either a union of all attributes that appear in the tables
34specified as "Additional Tables", or their intersection, that is, a list of attributes
35which appear in all the connected tables.
36
37
38Example
39-------
40
41The widget can be used, for instance, for merging the data coming from three
42separate files, as shown below.
43
44.. image:: images/Concatenate-Example.png
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