(This article was first published on

**Rexamine » Blog/R-bloggers**, and kindly contributed to R-bloggers)A new version of the FuzzyNumbers package for R has just been submitted to the CRAN archive.

Check out our step-by-step tutorial.

** FuzzyNumbers Package CHANGELOG ** ********************************************************************* 0.3-1 /2013-06-23/ * piecewiseLinearApproximation() - general case (any knot.n) for method="NearestEuclidean" now available. Thus, method="ApproximateNearestEuclidean" is now deprecated. * New binary arithmetic operators, especially for PiecewiseLinearFuzzyNumbers: +, -, *, / * New method: fapply() - applies a function on a PLFN using the extension principle * New methods: as.character(); also used by show(). This function also allows to generate LaTeX code defining the FN (toLaTeX arg thanks to Jan Caha). * as.FuzzyNumber(), as.TriangularFuzzyNumber(), as.PowerFuzzyNumber(), and as.PiecewiseLinearFuzzyNumber() are now S4 methods, and can be called on objects of type numeric, as well as on various FNs * piecewiseLinearApproximation() and as.PiecewiseLinearFuzzyNumber() argument `knot.alpha` now defaults to equally distributed knots (via given `knot.n`). If `knot.n` is missing, then it is guessed from `knot.alpha`. * PiecewiseLinearFuzzyNumber() now accepts missing `a1`, `a2`, `a3`, `a4`, and `knot.left`, `knot.right` of length `knot.n`+2. Moreover, if `knot.n` is not given, then it is guessed from length(knot.left). If `knot.alpha` is missing, then the knots will be equally distributed on the interval [0,1]. * alphacut() now always returns a named two-column matrix. evaluate() returns a named vector. * New function: TriangularFuzzyNumber - returns a TrapezoidalFuzzyNumber. * Function renamed: convert.side to convertSide, convert.alpha to convertAlpha, approx.invert to approxInvert * Added a call to setGeneric("plot", function(x, y, ...) ... to avoid a warning on install * The FuzzyNumbers Tutorial has been properly included as the package's vignette * DiscontinuousFuzzyNumber class has been marked as **EXPERIMENTAL** in the manual * Man pages extensively updated * FuzzyNumbers devel repo moved to GitHub

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