CURVE_FIT_POLYNOMIAL
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.. _curvesfitpolynomialex:


Two new inputs called 'Smallest segment to consider for fit' and 'R2 Cut Off for Fit Optimization' are available in *CURVE_FIT_POLYNOMIAL worker.

.. thumbnail:: /_images/Images/curvefitpolynimialoptions.png
   :title:

   CURVE_FIT_POLYNOMIAL

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CURVE_FIT_POLYNOMIAL worker now supports auto number of Knots. ​

.. thumbnail:: /_images/Images/curvefitpolynomialautonumberknots.png
   :title:

   Auto number of Knots

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New input options added to limit to certain number of points while searching for knots in worker *CURVE_FIT_POLYNOMIAL

.. thumbnail:: /_images/Images/curveinputkntsfitpolynomial.png
   :title:

   limit to certain number of points

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Adjust knots
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*CURVES_FIT_POLYNOMIAL worker has new input options called 'Adjust Knots' and 'Number of Knot Adjustments' in Workflows.​

.. thumbnail:: /_images/Images/curvefitadjustknots.png
   :title:

   Adjust Knots

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CURVE_FIT_POLYNOMIAL Worker : Auto
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Overview
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The ``*CURVE_FIT_POLYNOMIAL`` worker is used to fit a polynomial curve to input data. It enables users to approximate relationships between variables by selecting an appropriate polynomial degree.

New Feature: Auto Order Selection
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The worker now supports an ``Auto`` order option, which automatically determines the optimal polynomial degree based on the coefficient of determination (R²).

When ``Auto`` is selected:

- Multiple polynomial degrees are evaluated.
- The R² value is calculated for each fitted model.
- The polynomial order with the best R² score is selected automatically.
- This eliminates the need for manual trial-and-error when choosing the polynomial degree.

.. thumbnail:: /_images/Images/curveoderauto.png
   :title:

   Auto Order

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