Learn more about Curve Fitting Toolbox

Version 2.2 (R2010a) Curve Fitting Toolbox Software

This table summarizes what's new in Version 2.2 (R2010a):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	Yes—Details labeled as Compatibility Considerations, below. See also Summary.	Bug Reports Includes fixes	Printable Release Notes: PDF Current product documentation

• New Toolbar in Surface Fitting Tool

• Usability Improvements for Surface Fitting Workflow

• Improved Gaussian Library Model

• Functions and Function Elements Being Removed

New Toolbar in Surface Fitting Tool

A new toolbar in Surface Fitting Tool makes it easier to discover and control plotting options. You can use the toolbar to:

• Toggle plot mode between Rotate 3D, Data Cursor, and Exclude Outliers

• Control which plots are displayed of Surface, Residuals and Contour plots

• Control the Legend, Grid and Axis Limits

See Exploring and Customizing Plots in the Surface Fitting Tool documentation.

Usability Improvements for Surface Fitting Workflow

In Surface Fitting Tool, plot mode now defaults to Rotate 3D. A common surface fitting workflow is to manipulate and view the surface plot from various angles. You no longer have to select plot rotate mode initially, because it is now on by default. You can use the toolbar to switch to data cursor or exclude outliers mode. When you turn off data cursor or exclude outliers mode, your cursor mode is automatically set back to Rotate.

See Using Rotation, Data Cursor, and Outlier Exclusion in the Surface Fitting Tool documentation.

The initial surface fit for polynomials is now a linear plane in x and y (poly11). Previously the default fit was a quadratic polynomial in x and y (poly22).

If you are going to use a polynomial to fit a model, it can be helpful to start by looking at a reference plane.

See Selecting Fit Settings in the Surface Fitting Tool documentation.

Improved Gaussian Library Model

The gaussian library model has been updated to use improved starting value defaults. You may see different answers to previous releases because of the improved starting values.

See Library Models in the Interactive Curve Fitting documentation.

Functions and Function Elements Being Removed

Function Element Name	What Happens When You Use This Function Element	Use This Instead	Compatibility Considerations
'Algorithm', 'Gauss-Newton' property name/value pair as input to fitoptions method	Warns when you call the fit method	'Algorithm', 'Levenberg- Marquardt' property name/value pair as input to fitoptions method	Use 'Levenberg- Marquardt'as the value for Algorithm instead.

Curve Fitting Toolbox Release Notes

Version 2.1 (R2009b) Curve Fitting Toolbox Software

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