.. highlightlang:: us

.. index:: Data=>Polynomial Surface (3D)
.. index:: 3D-Fit

.. _data--3D-polynomial-fit:
.. _data-3D-polynomial-fit:

Data=>3D Polynomial Fit
-----------------------

New command added to create a surface fit function for a 3D dataset. The function
can create polynomial least squares fit up to third order.

Right click an isoline of a 3D dataset to open the context menu.

.. image:: S:/uniplot-obj/images/3d-fit-dialog-en.*

.. image:: S:/uniplot-obj/images/3d-fit-de.*

.. us.comment

**Comment**

The result matrix will be added to the selected diagram as a 3D dataset.

The function can be used for 3D dataset created from xyz triples or a matrix.
If the matrix has less than 3 columns or rows you can create a matrix with 
more columns or rows using the :ref:`datamatrix-interpolation-(3d)` 
(linear Interpolation) command.

The fit parameter of the polynominal will be written to the clipboard.
The clipboard contents can be inserted into the document with Ctrl+V.
The clipborad can also be inserted into other applications.

.. seealso::
   :ref:`data`,
   :ref:`datamatrix-interpolation-(3d)`

:sub:`id-1781621`