Version 3.2.2 (R14SP3) Spline Toolbox Software

This table summarizes what's new in Version 3.2.2 (R14SP3):

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

New features and changes introduced in this version are

• rsmak Now Provides an Arc

• Changes to Spline Tool

• Compatibility Considerations

rsmak Now Provides an Arc

rsmak now provides the rBform of an arc for which you can specify the center, radius, and extent.

rsmak(object,varargin) returns the specific geometric shape specified by the string object. For example,

rsmak('arc',radius,center,alpha,beta)

provides a quadratic rational that describes the arc of the given radius (default 1) and center (default (0,0)) of total arc length <= radius*pi that covers the angle interval between the given alpha (default 0) and beta (default pi).

Changes to Spline Tool

• The last of the examples offered during startup now starts, appropriately, with spline interpolation rather than cubic spline interpolation.

• Deleting the Spline Tool window after a spline approximation has been generated now brings up a request for confirmation.

• During longer calculations, the cursor now becomes the hour glass symbol to inform the user that the Spline Tool is working.

Compatibility Considerations

B-form Evaluation Outside the Basic Interval Returns 0

Evaluation of a multivariate spline in B-form at scattered sites now conforms to the definition that such a spline is zero outside its basic interval. fnval now returns the value 0 at any site outside the basic interval of a spline in B-form.

Although this has been the documented behavior, it was not previously enforced.

spaps Handles Vector-Valued Data Correctly in the Case of Zero Tolerance.

For the smoothing spline function, spaps, if you provide vector-valued data and specify a tolerance of 0 as a way of interpolating the data, spaps now handles the data correctly. Prior to this change, spaps produced an error message.

fncmb Returns Error if Only One Coefficient Array Is a Scalar

fncmb now performs stricter input checking to enforce that the two splines f and g in the command fncmb(f,g) have the same order and the same knot or break sequences. Previously, if one but not the other of the coefficient arrays of the splines f or g was a scalar, fncmb may have produced incorrect results or a confusing error message.

Version 3.3 (R2006a) Spline Toolbox Software

Version 3.2.1(R14SP1) Spline Toolbox Software

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