On 24 November 2015 at 13:52, Phil Steitz <[email protected]> wrote:
> I need the following methods to complete the fix for MATH-1246. I
> can add them as private methods to the KS class; but they seem
> generally useful, so I propose adding them to MathArrays. Any
> objections?
>
> /**
> * Concatenates two arrays.
> *
> * @param x first array
> * @param y second array
> * @return a new array consisting of the entries of x followed by
> the entries of y
> * @throws NullPointerException if either x or y is null
> */
> public static double[] concat(double[] x, double[] y)
Could perhaps take a list?
> /**
> * Returns an array consisting of the unique values in {@code data}.
> * The return array is sorted in descending order.
> *
> * @param data
> * @return descending list of values included in the input array
> */
> public static double[] values(double[] data)
The name gives no hint that the output is unique.
IMO it should be renamed to reflect that.
[The sort order seems to be a byproduct of the algorithm used, so is
not particularly relevant to the name]
> /**
> * Adds random jitter to {@code data} using deviates sampled from
> {@code dist}.
> * <p>
> * Note that jitter is applied in-place - i.e., the array
> * values are overwritten with the result of applying jitter.</p>
> *
> * @param data input/output data array
> * @param dist probability distribution to sample for jitter values
> * @throws NullPointerException if either of the parameters is null
> */
> public static void jitter(double[] data, RealDistribution dist)
>
>
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