.. highlightlang:: us

.. _st_seti:

ST_seti
=======

.. index:: ST_seti

.. us.tag  ST_seti NOTREADYENGLISH STR New552 Changed593

The :ref:`ST_seti` function takes an vector argument (*A*) and removes duplicate
elements. The function returns an index vector of the result.

.. function::  C = ST_seti(A)
    C = ST_seti(A, bSort)

.. us.return

**Return Value**

*C* is an index vector.

.. us.params

**Parameters**

.. uparam:: A

   *A* is a real or string vector.

.. uparam:: bSort

   *bSort* specifies if the index vektor contains the indeces of the sorted or
   unsorted vector. Default value is TRUE (1).

.

.. us.example

**Example**

::

   * ST_seti([1.3, 4.2, 2.2, 4.2, 6.1, 3.1])
   *    1.000  3.000 6.000 2.000 5.000
   *
   * ST_seti(["one", "four", "two", "four", "three"])'
   4
   1
   5
   3
   *
   * ST_seti(["one", "four", "two", "four", "three"], FALSE)'
   1
   2
   3
   5

.. us.history

**History**

.. list-table::
   :header-rows: 1

   * - Version
     - Description
   * - 5.9.3
     - New parameter *bSort*.
   * - 5.5.2
     - New.

.. seealso::
   :ref:`overview-strings`,
   :ref:`ST_complement`,
   :ref:`ST_intersection`,
   :ref:`ST_union`,
   :ref:`ST_set`

:sub:`id-1858021`