vector.forwarddifferencematrix.md

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forwardDifferenceMatrix() function

Builds a matrix that transforms a vector to a vector of forward differences

Signature:

export declare function forwardDifferenceMatrix(binCount: number): NumberMatrix;

Parameters

Parameter	Type	Description
binCount	number	The size of the vector to which the output ought to be applied

Returns:

NumberMatrix

The forward difference matrix

Remarks

A forward difference matrix calculates an approximate derivative scaled by the difference when applied to a vector of function values, using a forward difference _f(x + delta) - f(x)_

Example

forwardDifferenceMatrix(4);

// [ -1  1  0  0 ]
// [  0 -1  1  0 ]
// [  0  0 -1  1 ]
// [  0  0  0 -1 ]